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Bihar Agricultural University, Sabour

Bihar Agricultural University, Sabour established on 5th August, 2010 is a basic and strategic institution supporting more than 500 researchers and educationist towards imparting education at graduate and post graduate level, conducting basic, strategic, applied and adaptive research activities, ensuring effective transfer of technologies and capacity building of farmers and extension personnel. The university has 6 colleges (5 Agriculture and 1 Horticulture) and 12 research stations spread in 3 agro-ecological zones of Bihar. The University also has 21 KVKS established in 20 of the 25 districts falling under the jurisdiction of the University. The degree programmes of the university and its colleges have been accredited by ICAR in 2015-16. The university is also an ISO 9000:2008 certified organisation with International standard operating protocols for maintaining highest standards in teaching, research, extension and training.VisionThe Bihar Agricultural University was established with the objective of improving quality of life of people of state especially famers constituting more than two third of the population. Having set ultimate goal of benefitting society at large, the university intends to achieve it by imparting word-class need based agricultural education, research, extension and public service.

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2014 - 20173
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Author: Kumar, Amit × Type: Thesis ×
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    ThesisItemOpen Access
    Early Generation Selection of Lines Suitable for Yield and Earliness in Cauliflower (Brassica oleracea var. botrytis L.)
    (Department of Horticulture (Vegetable and Floriculture), BAU, Sabour, 2017-08) Kumar, Amit; Kumar, Randhir
    Cauliflower is a thermo-sensitive cool season vegetable crop. On the basis of temperature requirement to curd initiation the crop is grouped into early, mid and late cauliflower. The hybrid is most important as because of uniform maturity, compacted curd, and resistant to environmental stresses. Very few hybrids are available for cultivation in early group of cauliflower. Inbreeding programme in cauliflower is tedious, labour intensive and costly that slower down the effectiveness of hybrid breeding programme. To reduce these problems, Jenkin (1935) had been proposed a technique to early generation testing in genotypes during inbreeding based on GCA estimation. In the present experiment 19 S2 generation lines were tested for combining ability analysis using line x tester mating design with two testers namely Sabour Agrim and Pusa Kartik Sankar. The experiment was laid out in Randomised Block Design with a spacing of 50x 50 cm in two replications with two dates of planting. The analysis of variance revealed the existence of significant genetic variability among the treatments. The MSS for parent vs. cross was also found significant which depicted that existence of heterosis among the cross for the traits under study. The characters net curd weight (NCW), harvest index (HI), marketable curd weight (MCW) and biological weight (BW) were found to be highly heritable and high expected genetic advance indicated that the selection of parental line for these traits could be effective. Pooled analysis of GCA recorded Hzp 108 (-7.22) and Sel 31-1 (-4.97) were significantly negative for D50 % CI; usefulness for the development of early maturity hybrid. However Hzp 106 (112.23), Hzp 101 (80.52) and Hzp 111 (44.70) were found to be good general combiner for NCW that means these genotypes will be useful for the development high yielding hybrids. Cross combination Hzp 106 x PKS (48.02 %), Sel 332 x PKS (33.68 %) and SA-1 x SA (37.05 %) were recorded positive significant relative heterosis and heterobeltiosis for NCW. In the present study, the high D2 value indicated a high degree of genetic diversity among the genotypes. Pooled data analysis for morphological diversity revealed that all the 21 genotypes were grouped into four groups or clusters Cluster I includes 14 lines, cluster II includes 5 lines, cluster III and cluster IV include single genotype in each cluster. The highest inter cluster distance (580.42) was observed in between cluster I and cluster IV followed by cluster I and III (438.36), cluster I and II (180.79). On the basis of molecular diversity analysis, similarity values for all cauliflower genotypes were ranged from 0.50-0.90. The high ranges of similarity coefficient indicated the presence of narrow genetic variability. PIC value ranged from 0.121-0.290. All the SSR primers showed monomorphic band except SSR 73 and SSR 110. From the above findings it can be concluded that among the 19 segregating lines Hzp 108 and Sel 31-1 would be desirable for breeding cauliflower hybrids for earliness and lines Hzp 106 and Hzp 101 would be effective to producing the heterotic hybrids for net curd weight.
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    ThesisItemOpen Access
    Study of heterosis and Combining ability in bottle gourd[Lagenaria siceraria (Mol.) Standl.]
    (Department of Horticulture (Vegetable and Floriculture), BAU, Sabour, 2017-07) Kumar, Amit; Sharma, Ramesh Kumar
    Bottle gourd is a tropical and subtropical vine. Bottle gourd belongs to the family Cucurbitaceae having chromosome number, 2n = 22. It is commonly known as white flowered gourd, Calabash gourd, Lauki, Ghia etc. The current production level of vegetables is over 175.2 million tons from an area of 10.30 million hectares. Bottle gourd occupies an area of 1.57 million hectares with a production of 2.57 million tons in India. Hybrids are important due to high yield and uniformity and breeders are in look out for new hybrids. Heterosis and specific combining ability are good source for better hybrid selection while the general combining ability for the selection of better combiner parent useful in breeding purpose. Diallel mating scheme was adopted to develop 21 hybrids in spring summer season of 2016 and the hybrids along with the seven parents and one checks were evaluated in RCBD with two replications in the autumn-winter season of 2016 to accomplish the objectives to study the mean performance of parents and their crosses for the character under study, to study the general and specific combining ability variances and their effects for the characters under study, to study the extent and magnitude of heterosis. On the basis of mean performance, the earliness was observed in BRBG 51-2 × Punjab Komal and highest fruit yield was found in BRBG 65 × Punjab Komal followed by BRBG 51-2 × BRBG 190 and BRBG 21-2 × Pusa Naveen. Among all hybrids, the highest TSS (%) was observed in BRBG 42-2 × Punjab Komal, highest ascorbic acid was observed in Punjab Komal and highest ß Carotene Content (mg/ 100g) in Pusa Naveen. On gca basis, BRBG 190 was found better for fruit yield per vine and total fruit yield and Punjab Komal for earliness where as Pusa Naveen and Punjab Komal for biochemical parameters. On sca basis, BRBG 65 × Punjab Komal was the best for fruit yield and BRBG 21-2 × BRBG 190 and BRBG 51-2 × BRBG 190 were the best for most of the biochemical parameters. Ray et al. (2015) and Shindeet al. (2016) reported similar finding for heterosis, gene action and combining ability in bottle gourd. BRBG 65 x Punjab Komal possessed high significant BPH (60.02 %) and SH (40.16 %) for total fruit yield, while BRBG 51-2 x BRBG 190 possessed high significant standard heterosis for β Carotene content while BRBG 42-2 x Punjab Komal had high significant standard heterosis for total soluble solids, and pusa Naveen x Punjab Komal possessed high significant standard heterosis for ascorbic acid. The additive components (D) of genetic variance was found to be highly significant for average fruit weight and number of fruits per vine. The estimates of dominance components viz. H1, H2 and h2 were evaluated which H1 and H2 were found to be highly significant for all the trait. Dominance components (h2) was found in few characters viz. fruits per vine, fruit yield per vine and yield (q/ha) suggested the role of dominance components for this trait. The estimated for E component for days to first fruit harvest, fruits per vine, average fruit weight and β carotene showed significant value. The average degree of dominance was more than one for all the characters showed over dominance excluding fruit length. On the basis of findings, the genotypes viz. BRBG 190 and BRBG 51-2 have better general combining ability moreover, the crosses viz. BRBG 65 x Punjab Komal, and BRBG 21-2 x BRBG 190 were better performing hybrids for yield and quality contributing traits and can be used in future bottle gourd improvement programme for high yield and quality.
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    ThesisItemOpen Access
    Evaluation of Okra Genotypes for Yield and Quality Contributing Traits
    (Department of Horticulture, BAU, Sabour, 2014) Kumar, Amit
    Okra is important vegetable crop of Malvaceae family. It can be grown during summer as well as rainy season. Okra can be easily grown throughout the year, but still the lack of genotypes having high yield, better quality and tolerance to diseases like Okra Yellow Vein Mosaic Virus makes its cultivation limited. Hence, there is urgent need of research on development of new genotype having good performance and high yield, the first step of which is studies on diverse genotypes. Hence, 30 genotypes including 4 national checks (VRO-6, Pusa Sawani, Arka Anamika, and Arka Abhay) were grown during Kharif season 2013-14, at Vegetable Research Farm, Department of Horticulture (Vegetable & Floriculture), Bihar Agricultural University, Sabour, Bhagalpur to study diversity among them and generate information on the genetics of their important traits that can be used in future breeding work. All the genotypes showed significant difference for the characters under study.