Loading...
Theses
Browse
Search Results
ThesisItem Open Access Stability analysis in advanced clones of sugarcane Saccharum spp. complex(G. B. Pant University of Agriculture & Technology, Pantnagar, Uttarakhand. PIN 263145, 2022-08) Goswami, Riya; Jeena, A. S.The present investigation entitled “Stability analysis in advanced clones of sugarcane (Saccharum spp. complex)” was conducted with 18 advanced clones of Sugarcane including three checks viz., CoS 767, CoPant 97222 and Co 05011 to estimate the genotype×environment interaction and stability parameters using Eberhart and Russell model. The experiment was conducted in randomized block design at three different environments viz., Norman E. Borlaug Crop Research Centre of Govind Ballabh Pant University of Agriculture and Technology, Pantnagar (E1), U.P Council of Sugarcane Research, Shahjahanpur (E2) and, PAU Regional Station, Kapurthala (E3). At each environment observations were recorded for fifteen yield and yield contributing traits viz., germination percent, tillers/ha, brix percent at 10 months, purity percent at 10 months, sucrose percent at 10 months, number of millable cane/ha, single cane weight (kg), cane diameter (cm), cane height (m), cane yield (t/ha), CCS yield (t/ha), brix percent at 12 months, sucrose percent at 12 months, purity percent at 12 months and CCS percent at 12 months. Analysis of variance at each environment revealed that genotypes exhibited highly significant differences for all characters under study. Further, the pooled analysis of variance over three environments also exhibited significant differences among genotypes for all the fifteen traits. The estimates of the environmental index showed that E1 was the most favourable environment for nine traits followed by E2 for seven traits and E3 for five traits. Based on the mean performance, CoPant 97222 was registered as the best check for nine traits followed by CoS 767 for six traits. Likewise, among the entries, Co17018 was found superior to best checks for seven traits, followed by CoH 17262 for six traits and CoS 17234 and CoPb 17214 for five traits. The G X E interaction was found significant for all characters except for two traits namely, purity % at 10 months and purity % at 12 months. Based on the estimates of stability parameters as per Eberhart and Russell model, CoPb 17214 was observed as stable genotype for all traits except tillers/ha. Similarly, CoS 17236 and CoH17261 were found stable for fourteen traits except cane yield t/ha. Likewise, among the checks, Co 05011 was found stable for all traits except for cane yield, here this genotype was responsive in favourable environment. Check, CoS 767 was found stable for all traits except for germination percent. Based on the study the clone Co17018 was identified stable for cane yield and sucrose percent at 12 months, along with superiority over all the three checks. Hence, this genotype can be recommended for cultivation over different environments. While, two clones viz., CoS 17234 and Co 05011 were found responsive for cane yield in favourable environment, hence these can be recommended for cultivation under resource rich environment.ThesisItem Open Access Studies on kernel protein and phytic acid in teosinte derived s1 lines of maize (Zea mays l.)(G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-09) Adhikari, Shriya; Singh, N. K.The investigation was carried out with the aim to transfer gene(s) responsible for high protein content in teosinte into the genetic background of inbred line LM14 which has low phytate content through repeated backcross breeding at Norman E. Borlaug Crop Research Centre and Department of Genetics and Plant Breeding, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, U.S. Nagar, Uttarakhand. The field experiments were conducted during kharif 2019, rabi 2019-20, kharif 2020, rabi 2020-21 and kharif 2021. The experiment was carried out with two populations that had same parents but followed 2 different crossing programs. It is apparent from the results that among the S1 lines of teosinte derived maize population, that there was an increase in mean protein of ~22% in both populations when compared to the recurring parent. The protein content ranged between 12.43% and 19.68% in 2227 {LM14x (LM14//LM14xPT) #F2} and 12.43 and 18.04% in 2228 (LM14//LM14xPT##F2). Of all the 137 lines of both the populations, three lines namely 2227-93, 2227-95, 2227-97 had protein content of around 19% and two lines 2228-60 and 2228-58 had protein content of around 18%. None of the S1 lines exceeded the protein content present in the donor parent teosinte, and the line which had the lowest protein content was still higher than the protein content LM14 in both populations. Investigation on phytic acid and total phosphorus have unequivocally demonstrated that the S1 lines produced in the genetic backgrounds of LM14 have much lower levels of phytic acid along with lower levels of total phosphorus. In the two populations under study S1 lines, 2227-22 (3.072 mg/g), 2227-69 (3.095 mg/g), 2227- 95 (3.059 mg/g), 2228-6 (2.967 mg/g), 2228-64 (2.955 mg/g) and 2228-50 (2.979 mg/g) were statistically comparable to the recurrent parent, while 2227-11(3.952 mg/g), 2227-16 (3.952 mg/g), 2227-27 (3.988 mg/g), 2227-29 (3.926 mg/g), 2227-86 (3.976 mg/g), 2228-18 (3.875 mg/g), 2228-39 (3.847 mg/g), and 2228-48 (3.835 mg/g) were all observed to be notably lower in levels of PA, compared to the parviglumis-teosinte parent. Lines namely 2227- 46 (0.77%), 2227- 67 (0.78%) 2227- 86 (0.82%), 2228-35 (0.78%), 2228-54 (0.77%) and 2228-65 (0.80%) had the highest level of P, and quite on par with that of the parviglumis-teosinte parent. Additionally the recurrent parent had the lowest P, with 2227-95 and 2228-6 being the closest with 0.41% and 0.40 % P. The most promising lines amongst all the teosinte derived S1 lines were analysed and grouped together using ward’s method of minimum variance, viz., 2227-22, 2227-64, 2227-69, 2227-77, 2227-93, 2227-95, and 2227-97 which had a mean protein content of 18.47 % with PA content of 3.1 mg/g and 3 lines from the second population i.e. 2228 had a mean protein content of 16.6% and a PA content of 2.97 mg/g, which were as follows 2228-6, 2228-50 and 2228-64.ThesisItem Open Access Components of variation, correlation and path analysis for seed yield and its contributing characters in soybean [glycine max (l.) merrill](G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-09) Sailani, Alokita; Karnwal, M. K.The present investigation was carried out with the objectives to assess the genetic variability, inter- character correlation and the direct and indirect effects on seed yield per plant in advance lines of soybean taken an account of thirteen component characters. The experiment was conducted at Norman E. Borlaug Crop Research Centre, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, India, during kharif, 2021. Twenty soybean genotypes including four check varieties (PS 1092, PS 1347, PS 24 and PS 26) grown in a randomized block design with four replications. High significant difference was found among treatment for all the characters under study indicating the presence of sufficient amount of genetic variability among the experimental material. The value of Phenotypic coefficient of variation (PCV) was higher as compared to genotypic coefficient of variation (GCV) as well as environmental coefficient of variation (ECV) for all the character studied. The seed yield per plant reported the highest value of Phenotypic coefficient of variation (33.81 %) as well as genotypic coefficient of variation (31.81 %). Biological yield per plant exhibited maximum heritability (91%). High heritability values were also observed for basal node height, basal pod height, seed yield per plant, hundred seed weight, number of primary branches per plant, harvest index, number of pods per plant, plant height and protein content. The genetic advance varied from 0.11 % (harvest index) to 28.66 % (pod per plant). Genetic advance as per cent of mean (5%), exhibited highest value for seed yield per plant (61.34 %). The majority of the characters under study including number of primary branches per plant, number of pods per plant, basal pod height, basal node height, hundred seed weight, biological yield per plant (g), harvest index (%), and seed yield per plant (g) exhibited high values of heritability along with high estimates of genetic advance as per cent mean. Which showed the presence of additive gene action. In general, Genotypic correlations coefficient (rg) reported greater value than phenotypic correlations coefficient (rp). Directions of phenotypic and genotypic correlations coefficient were almost same for all the character combinations. seed yield per plant showed significant positive phenotypic and genotypic correlation with day to 90 % maturity, primary branch per plant, pod per plant, seed per pod, biological yield per plant, hundred seed weight and harvest index. Yield attributes with positive correlation coefficient can be used as selection criteria to improve the yield. Day to 90% maturity, primary branches per plant, pod per plant, biological yield per plant and harvest index exhibits highly significant positive correlation as well as positive direct effect on seed yield per plant. The positive and significant association of these traits with seed yield per plant and positive direct effect of these traits towards the yield revealed that there is true relationship between these characters and the direct selection for these component traits will bring an improvement in the seed yield per plant, the dependent variable. Hence more emphasis should be given to these traits for improvement of seed yield per plant in soybean through selection programme.ThesisItem Open Access Characterization of thermo sensitive genic male sterile lines to explore the hybrid combinations in rice (Oryza sativa L.)(G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-08) Singh, Vriksha; Nautiyal, M. K.The present investigation entitled “Сhаrасterizаtiоn оf Thermо Sensitive Geniс Mаle Sterile Lines tо exрlоre the Hybrid Соmbinаtiоns in Riсe (Оryzаsаtivа L.)” was taken up, to evaluate the twenty-four TGMS lines for different morphological traits and critical sterility/fertility temperatures. The field experiment conducted with twenty-four TGMS lines, nineteen F1’s and four checks in randomized block design with three replications at the Norman E. Borlaug Crop Research Centre of Govind Ballabh Pant University of Agriculture and Technology, Pantnagar during Kharif 2021. The Analysis of Variance revealed the presence of ample amount of variability in the experimental material for all the characters and found highly significant for all the traits viz.,days to 50% flowering, panicle length, plant height, number of tillers per plant, 1000 grain weight, number of grains per panicle, days to maturity and yield per plant. Among all the nineteen F1’s TGMS-17 x PD-18-2, TGMS-12 x PB-2 and TGMS-24 x PD-24 found good for all the desired traits and can be directly used in breeding programmes. Among the twenty-four TGMS lines the minimum critical temperature for fertility was observed in TGMS-5-1, TGMS-7, TGMS-11 and TGMS-16, these lines can be used in hybrid development. Therefore, in Pantnagar situation to get complete sterility these lines should be sown in first fortnight of May. Based on standard heterosis TGMS-17 x PD-18-2 found good for number of tillers per plant and TGMS-24 x PD-24 for 1000 grain weight and yield per plant. These crosses may be suggested for straight use in hybrid breeding. The results of morphological and floral characterization studies showed that TGMS lines viz.,TGMS-11 and TGMS-12, TGMS-12-10-1, TGMS-12-25, TGMS-16-1 and TGMS-24-1 had good desirable traits like ratooning ability, grain type and panicle exsertion for the better extent of outcrossing ability. These lines can be utilized for two-line hybrid rice breeding programme for high heterotic expression and superior yield.ThesisItem Open Access Studies on genetic variability and diversity in forage sorghum [Sorghum bicolor (L.) Moench](G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-08) Thapliyal, Vinod; Pandey, P. K.The present investigation “Studies on Genetic Variability and Diversity in Forage Sorghum [Sorghum bicolor (L.) Moench]” was carried out with 22 test entries and 2 check at the Instructional Dairy Farm, Nagla of Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Uttarakhand during Kharif season, 2021. The experiment was laid out in Randomized Block Design with 3 replications. Observations were recorded for 11 quantitative and 3 quality traits viz., days to 50% flowering, plant height, number of leaves per plant, leaf length, leaf breadth, leaf area, stem girth, leaf stem ratio, shoot fly dead heart %, TSS, HCN content, protein content, dry fodder yield and green fodder yield with key objective to assess the genetic variability parameters, correlation among various traits and their direct and indirect effects on green fodder yield and genetic diversity The analysis of variance revealed highly significant differences among all the 24 genotypes for all the 14 traits under study. High GCV and PCV were found for traits namely, HCN content, shoot fly dead heart %, leaf stem ratio, TSS, dry fodder yield, green fodder yield and stem girth. High heritability accompanied by high genetic advance for traits viz., number of leaves per plant, stem girth, leaf stem ratio, shoot fly dead heart %, TSS, HCN content, protein content, dry fodder yield and green fodder yield indicating additive gene action. Analysis of correlation coefficient revealed the highly significant and positive correlation, at both genotypic and phenotypic level, of green fodder yield with plant height, number of leaves per plant, leaf length, leaf breadth, leaf area, stem girth, leaf stem ratio, TSS and dry fodder yield. Path coefficient analysis disclosed that dry fodder yield had maximum positive direct effect on green fodder yield followed by stem girth, TSS, leaf stem ratio, plant height, HCN content, protein content, leaf breadth, number of leaves per plant, shoot fly dead heart % and days to 50% flowering while leaf length and leaf area exhibited negative direct on green fodder yield. High positive indirect effect on green fodder yield was exhibited mainly via dry fodder yield, TSS and stem girth. The genetic diversity of 24 genotypes, which were divided into seven clusters, was evaluated using Mahalanobis D2 statistics. Cluster IV was found to have maximum number of genotypes followed by cluster I and V. Highest inter-cluster distance was recorded between cluster IV and cluster V. It was found that dry fodder yield contributed maximum towards genetic diversity followed by green fodder yield. Based on per se performance of genotypes, it was found that PC 21-1158 and PC 21-1227 were found superior over best check Pant chari-5 for both green as well as dry fodder yield along with low HCN content. Hence, they can be used in further breeding programme for crop improvement.ThesisItem Open Access Genetic diversity and stability analysis for heat stress tolerance in wheat (Triticum species(G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-09) Akhouri, Ayush; Jaiswal, J.P.The present study was conducted with an objective to assess one hundred wheat genotypes for genetic diversity and stability for heat stress tolerance over three different sowing dates i.e., 4.12.2021 (E1), 14.12.2021 (E2), and 25.12.2021 (E3) at the Norman. E. Borlaug Crop Research Centre and Pantnagar Centre for Plant Genetic Resource, G.B. Pant University of Agriculture & Technology, Pantnagar, Uttarakhand during Rabi season of 2021-2022. The experiments were conducted using one hundred wheat genotypes and four checks viz., UP 2855, HD 3086, UP 2844 and HD 3059 in Augmented Block Design. The characters under the study were days to 75% heading, days to 75% anthesis, days to maturity, flag leaf area, number of tillers per meter, plant height, peduncle length, spike length, number of spikelets per spike, number of grains per spike, grain weight per spike, thousand-grain weight, grain filling duration, biological yield, grain yield and harvest index, Canopy Temperature Depression (CTDI, II and III)and Normalized Difference Vegetation Index (NDVI I,II, III). Readings forCTD and NDVI were taken at 3 stages of crop growth, namely, at heading, anthesis and 15 days after anthesis. The results from genetic diversity analysis revealed that the genotypes were grouped into 6 clusters for E1, E2, and E3. Cluster II comprised of maximum number of genotypes in E1 i.e., 23, whereas, in case of E2, Cluster V contained maximum number of genotypes, consisting of 24 genotypes, while for E3, Cluster IV comprised of maximum number of genotypes i.e., 22. The maximum inter-cluster distance was recorded between cluster IV and cluster V (8.30) in E1; between cluster IV and Cluster VI (7.70) in E2, while cluster I and Cluster IV (7.77) had the maximum inter-cluster distance in E3. Using the genotypes from clusters having high inter-cluster distance to perform crosses may be useful for obtaining better heterosis in the progeny for different economic traits and also for isolation of transgressive segregants in wheat improvement program.The pooled analysis of variance of the AMMI model revealed that the mean sum of squares due to G x E interaction was highly significant for all the characters under study. Based on the AMMI stability value, the most stable genotypes were identified for each character under study, namely, KACHU// WBLL1*2/BRAMBLING*2/6/BECARD#1/5/KIRITATI/4/2*SERI.1B*2/3/KAUZ*2 /BOW// KAUZ for grain weight per spike, MERCATO//PARUS/PASTOR *2/3/ONIX/KBIRDfor grain filling duration (GFD), KACHU/DANPHE/3/ KACHU//KIRITATI/2*TRCHfor 1000 grain weight and ABLEU*2/BORL14 for grain yield per se. Among all the genotypes under study SUP152*2/ BECARD// KACHU/ DANPHE,KACHU//WBLL1*2/BRAMBLING*2/6/BECARD#1/5/KIR ITATI/4/2*SERI.1B*2/3/ KAUZ*2/ BOW//KAUZ, KACHU/ DANPHE/3/KACHU//KIRITATI/2*TRCH, and ABLEU *2/BORL14were found to be the most promising wheat genotypes suitable for the heat stress tolerance.ThesisItem Open Access Genetic studies on yield and yield contributing traits in important germplasm of non-basmati rice (Oryza sativa L.)(G. B. Pant University of Agriculture and Technology, Pantnagar, 2022-08) Rawat, Shreya; Baskheti, D.C.The present investigation entitled “Genetic Studies on Yield and Yield Contributing Traits in Important Germplasm of Non-basmati Rice (Oryza sativa L.)” was undertaken to: (i) to estimate the relative amount of variability, heritability and genetic advance for various traits for better selection values. (ii) to estimate correlation coefficients between different characters. (iii) to study the direct and indirect effects of yield components on grain yield by path coefficient analysis and (iv) to examine genetic divergence existing in the germplasm collections of the present study. The investigation was carried out with 41 rice genotypes at Norman E. Borlaug Crop Research Centre, G. B. Pant University of Agriculture and Technology, Pantnagar during Kharif 2021. The experiment was laid out in Randomized Block Design with three replications and observation was recorded for 9 quantitative and 3 quality traits. Analysis of variance revealed ample amount of variability among all the 41 genotypes for all the 12 studied characters. High genotypic coefficient of variation and phenotypic coefficient of variation was exhibited by number of grains per panicle followed by grain yield per plot, flag leaf area and number of panicles per plant. High heritability coupled with high genetic advance was observed for number of grains per panicle, plant height and days to 50% flowering indicating the role of additive gene action. Hence, selection for these parameters may be effective. Grain yield per plot exhibited highly significant and positive correlation with number of grains per panicle, thousand grain weight and number of panicles per plant both at phenotypic and genotypic levels. Therefore, grain yield can be improved by selecting genotypes having higher performance for these traits. Path coefficient analysis of direct and indirect effect of yield related traits on grain yield showed that number of grains per panicle has highest direct positive effect followed by thousand grain weight and number of panicles per plant. The cluster analysis for genetic diversity grouped 41 rice genotypes into six clusters with cluster I comprising maximum (fifteen) genotypes followed by cluster III and IV consisting of twelve and four genotypes respectively. The highest inter cluster distance (D= 8.67) was observed between cluster II and cluster IV; hence hybridization among the genotype of these clusters will give good heterotic recombination. Genotypes namely RG- 3528, RG- 3511, RG- 3536, RG3533 and RG- 3506 were found best for grain yield along with yield attributing and quality traits. Therefore, these genotypes may be used as a donor in breeding programme or may be directly used as a variety for commercial cultivation after successive rounds of selection for crop improvement.ThesisItem Open Access Genetic analysis for yield and some morphophysiological traits in bread wheat (Triticum aestivum L.)(G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-08) Jyala, Vineeta; SwatiThe present investigation was carried out to study combining ability, gene action and heterosis using line x tester mating design during Rabi season of 2020-21 and 2021-22, at Norman E. Borlaug Crop Research Centre, G.B. Pant University of Agriculture and Technology, Pantnagar (Uttarakhand). The experimental material consisted of nine lines viz., WB2, UP2855, QLD103, QLD106, UP2903, HD2967, DBW187, VL967 and PRL/2*PASTOR//PBW343*2/KUKUNA/3/ROLF07/4/BERKUT//… crossed with four testers viz., HI1612, HD3226, UP2942 and UP262 in line x tester mating design to produce 36 F1s. . These 36 F1s along with the 13 parents and two standard checks viz. UP2748 and WH1105 were planted in randomized block design with three replications during Rabi season of 2021-22 and observations were recorded for sixteen traits viz., days to 75% heading, days to maturity, plant height, spike length, peduncle length, number of effective tillers per plant, number of spikelets per spike, flag leaf area, 1000 grain weight, number of grains per spike, grain weight per spike, biological yield per plant, grain yield per plant harvest index, Normalised Difference Vegetation Index and Canopy temperature depression. The findings revealed that all of the genotypes showed significant differences, indicating the presence of a considerable amount of genetic variability, since mean squares for all of the characters were found to be highly significant. The parental line UP2903 was identified as a good general combiner for maximum number of characters viz., days to maturity, number of grains per spike, grain yield per plant, harvest index and Normalised Difference Vegetation Index at anthesis, followed by QLD103 for grain weight per spike, number of spikelets per spike and flag leaf area. The cross combination QLD103 x UP262 emerged as good specific cross combination for number of grains per spike, grain weight per spike and peduncle length. The hybrid VL967 x UP2942 was recognized as the superior specific combiner for grain yield per plant, whereas, F1, PRL/2*PASTOR//PBW343*2/KUKUNA/3/ROLF07/4/BERKUT//… x HI1612 was a better specific cross for flag leaf area and biological yield per plant and DBW187 x UP262 was a good specific combiner for plant height and number of effective tillers per plant. The variance ratio between general and specific combining ability was less than one, indicating that non-additive gene action predominate for the majority of the traits. Among the crosses, VL967 X UP262, UP2903 X HI1612, WB2 X UP262, VL967 X UP2942, WB2 X UP262, DBW187 X UP262, QLD103 X UP262, QLD103 X HD3226, HD2967 X UP2942, QLD103 X UP262, QLD103 X UP262, PRL/2*PASTOR//PBW343*2/KUKUNA/3/ROLF07/4/BERKUT//… X HI1612, VL967 X UP2942, UP2903 X UP262, UP2903 × UP262 and UP2903 x HI1612 were recognized as the best heterotic hybrids over all the levels for the characters days to 75% heading, days to maturity, plant height, spike length, peduncle length, number of effective tillers per plant, number of spikelets per spike, flag leaf area, 1000 grain weight, number of grains per spike, grain weight per spike, biological yield per plant, grain yield per plant harvest index, Normalised Difference Vegetation Index and Canopy temperature depression, respectively. The most promising heterotic cross combination for the trait grain yield per plant was VL967 X UP2942 followed by UP2903 X UP262. Good combiner genotypes could be used in crossing programme and crosses with large sca effects can be exploited to obtain transgressive segregants. Significant heterobeltiosis and standard heterosis for grain yield and its attributing characteristics revealed that there is plenty of room for exploitation of heterosis and potential for isolating desirable segregants. Therefore, based on the aforementioned analysis, we may choose the best lines and crosses for further use in our breeding programmes.ThesisItem Open Access Genetic divergence studies based on morphophysiological traits in bread wheat (Triticum aestivum L.) germplasm(G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145, 2022-08) Juyal, Neha; SwatiThe present investigation entitled “Genetic divergence studies based on morphophysiological traits in bread wheat (Triticum aestivum L.) germplasm” was carried out in Rabi season, 2021-22 at N.E. Borlaug Crop Research Centre, G.B. Pant University of Agriculture & Technology, Pantnagar. The experimental material comprised of 93 genotypes along with 5 checks, namely UP2855, HD3086, UP2938, HD2967 and DBW187. Observations were recorded for 16 morphophysiological characters viz., days to 75% heading, days to maturity, flag leaf area, spike length, peduncle length, plant height, number of productive tillers per meter, number of spikelets per spike, number of grains per spike, grain weight per spike, 1000-grain weight, biological yield per plot, grain yield per plot, harvest index, CTD at anthesis and 15 DAA and NDVI at anthesis and 15 DAA. The data was evaluated for analysis of variance, variability, heritability, genetic advance and genetic divergence. Analysis of variance revealed that significant differences were present among the genotypes for most of the characters and suggests that the abundant amount of variability is present in the experimental material and improvement can be done for these characters. Evaluation of variability parameters revealed that the magnitude of PCV was slightly higher as compared to GCV which indicates the little influence of the environment on the expression of these characters. High heritability coupled with high genetic advance as percent mean was reported for traits like flag leaf area, grain yield per plot, number of productive tillers per meter, harvest index, 1000-grain weight, biological yield per plot, grain weight per spike and number of grains per spike. The genotypes were grouped into 5 distinct clusters by Non- hierarchical Euclidean Cluster analysis. Cluster V comprised of maximum number of genotypes (26) followed by cluster II (24), cluster I and III (17 each) and cluster IV (9). The maximum intra-cluster distance was 7.551 for cluster IV and the minimum intra- cluster distance was 4.443 for cluster V. The maximum intercluster distance was observed between cluster I and cluster IV (8.009) followed by cluster III and IV (7.815), cluster IV and cluster V (7.672) cluster II and IV (7.619), cluster III and cluster IV (5.921). On the basis of the findings of the current study, on the basis of character mean five desirable donors for each character were identified. MUNAL#1/FRANCOLIN#1/KA/N AC// TRCH/3/DANPHE#1, HD3151/WH1105/HD3159, Mahyco.Goal/UP2784, ALTAR84/AE.SQ// 2*OPATA/PBW644/PBW726 and HUW701/QLD28 were the most promising genotypes as donors for the improvement of yield potential. For other characters genotypes can be used from different groups based on the objective of breeding programme.
