Thumbnail Image

Central Agricultural University, Pasighat

The Central Agricultural University has been established by an act of Parliament, the Central Agricultural University Act, 1992 (No.40 of 1992). The Act came into effect on 26th January, 1993 with the issue of notification by the Department of Agricultural Research and Education (DARE), Govt. of India. The University became functional with the joining of first Vice-Chancellor on 13th September, 1993. The jurisdiction of the University extends to six North-Eastern Hill States viz., Arunachal Pradesh, Manipur, Meghalaya, Mizoram, Sikkim and Tripura, with headquarters at Imphal in Manipur. College of Horticulture & Forestry, a constituent College of the Central Agricultural University, Imphal, Manipur, was established on 7th March 2001 at Pasighat, Arunachal Pradesh on the bank of beautiful river Siang.

Browse

20177
Reset filters
End date: 2017 × Start date: 2017 × Type: Thesis ×
Reset filters

Search Results

Now showing 1 - 7 of 7
  • Thumbnail Image
    ThesisItemOpen Access
    Evaluation of Dolichos Bean [Lablab purpureus (L.) Sweet] Genotypes against Aluminium Toxicity
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2017-07-25) Ansari, Mohd. Talha; Warade, S. D..; Mailappa, A.S.
    The present investigation was carried out in the year 2016-2017 in naturally ventilated polyhouse of Vegetable Experimental Farm, Department of Vegetable Science, College of Horticulture and Forestry, Central Agricultural University, Pasighat, Arunachal Pradesh. The experiment was laid out in Factorial Completely Randomized Design with 2 factors (twenty dolichos bean genotypes with four aluminium (Al) level i.e. 0, 15, 30, 45 ppm) and three replications. Individual main effect and their interaction effects were studied for vine length at weekly interval (2nd -4th), morpho-physiological characters (biomass, root length, root tolerance index, root dry matter, shoot dry matter, leaf dry matter, total dry matter, uptake of P and Al), quality parameters (total protein, proline and total chlorophyll), parameters of soil (pH, EC, available P and extractable Al) at 4th week after sowing whereas yield parameters (pod weight, pod length, pod width, no of seed per pod and yield) at harvesting. In the present study, genotypes of dolichos bean exhibited significant differences for all characters. Aluminium treatment also expressed significant differences for all characters. However, interaction effect was found significant for all studied characters except vine length at all stages. Vine length at weekly interval, biomass, root length, root dry matter, shoot dry matter, leaf dry matter, total dry matter, uptake of phosphorus reduced significantly due to Al treatment except Al uptake. There was significant increase in total protein and proline content of plants at 4th week due to Al treatment, whereas significant reduction in chlorophyll content was observed. In soil parameters, pH and available P decreased with Al treatment, while EC and extractable Al increased significantly with respect to control. All the yield parameters were significantly reduced due to Al treatment. At lower concentration (15 ppm) there was no significant effect on vine length and yield parameters whereas morpho-physiological, soil and quality parameters were significantly affected. At higher concentrations (30 and 45 ppm) all the parameters were significantly influenced. From the present study it can be concluded that G1, G2, G4, G5, G10 and G16 are tolerant based on morpho-physiological characteristic and root tolerance index. Genotypes G1, G2, G4, G11 and G18 were found superior for yield characteristics whereas, G4 and G5 were superior for quality parameters. Overall genotypes G1 (Pusa Sem 3), G2 (VRSEM-207), G4 (VRSEM-601) were found tolerant to aluminium toxicity as well as high yielding.
  • Thumbnail Image
    ThesisItemOpen Access
    Studies on genetic diversity among indigenous landraces of cucumber (Cucumis sativus L.) of North Eastern India through morphological traits and seed protein profiling
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2017-07-25) Chakraborty, Dhiman; Warade, S. D.; Wangchu, L.
    Analysis of variance revealed significant differences among the genotypes for all the characters studied. High PCV and GCV, heritability and genetic gain were observed for average fruit weight, fruit yield per plant, number of fruits per plant, fruit length, number of branches per plant, number of seeds per fruit and 100 seed weight. Correlation studies indicated that fruit yield per plant was positively and significantly correlated with average fruit weight, fruit length, fruit diameter and number of seeds per fruit which indicated the importance of these traits in selection for yield. Path analysis revealed that maximum positive direct effect on fruit yield per plant was imposed by average fruit weight followed by number of fruits per plant, node bearing first pistillate flower, days to first pistillate flower anthesis, 100 seed weight and total soluble solids at genotypic level. This indicated that these are the real independent characters and have maximum contribution towards increase in fruit yield per plant. Divergence study revealed average fruit weight contributed maximum per cent to the diversity followed by 100 seed weight, number of branches per plant, fruit yield per plant, fruit diameter and days to first harvest. Maximum inter cluster distance was observed between cluster IV and VI which indicated that the genotypes within these clusters were highly divergent. SDS-PAGE analysis showed considerable variation in band number of protein which ranged from 12-30. Protein banding profile showed that the genotype CHFC-4 was most distantly related to CHFC-26. Hence, it was recommended that these two genotypes could be utilized for crossing programme to create more genetic diversity. SDS-PAGE marker data provided more sub groupings and revealed higher amount of diversity as compared to morphological data in present study.
  • Thumbnail Image
    ThesisItemOpen Access
    Studies on Nutritive and Anti-nutritive Components of Important Underutilized Perennial Vegetables of Arunachal Pradesh (North East Region of India)
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2017-08-25) Bui, P. Mary; Warade, S. D.; Tayeng, Tissu
    The analysis of nutritional compositions exhibited that the maximum reducing sugar content was found in Houtttuynia cordata (11.15+ variance 0.02%), total carbohydrate content in leaves of moringa oleifera (40.43+0.02 g/100 g), starch content in Sauropus androgynus (1227.96+0.02 mg/100g),Cellulose contentd in Sauropus androgynus (332.05+0.02 mg/100g), crude fibre content in Litsea cubeba (43.41+0.03%), free fatty acid content in the leaf of Moringa oleifera (5.61+0.01 Mg/KOHg). The highest total free amino acid content was found in Passifora edule (30.54+0.02mg/100 g), protein content in Passiflora edule (45.73+0.02 umole/g), methionine content in Moringa oleifera (1.90+0.02 mg/g), crude protein content in Passiflora edule (7.88+0.02%), thiamine content in Polygonum chinense (47.97+0.03 mg/100g), vitamin C content in Passiflora edulis (329.87+0.02 mg/100g) and vitamin E content in Elatostema sessile (15.99+0.01 mg/100g). The highest chlorophyll a content was in the leaf Moring oleifera (0.40+0.02 mg/g), chlorophyll b and total chlorophyll content in Pouzolzia viminea were (0.65+0.02 mg/g) and (0.99+0.01 mg/g) respectively, carotenoids condtent in Passiflora edulis (22.08+0.01mg/100g). The N contentwas found highest in Pssiflora edulis (12.61+0.03 g/kg) whereas, other minerals like P, K and Na was found highest in malebud of Musa arunachalensis (0.76+0.01%), (8.00+0.01 mg/g) and (13.50+0.03 ppm) respectively. Iron content was found highest in Eryngium foetidum(9.2+0.03 mg/100g). The analysis of antinutritive components revealed that the highest cynogen content was found in Bambusa sp. (65.52+0.02 mg/100g) and lowest in Polygonu chinense (5.07+0.01 mg/100g), highest phytic acid content in Sauropus androgynus (735+0.02 mg/100g) and least in Pouzolzia viminea (57.00+0.03mg/100g), highest tannin content in Polygonum chinense (196+0.01 mg/100g) and least in Houttuynia cordata (23.52+0.03mg/100 g). From the above 24 perennial vegetable taken for analysis, leaves of Moringa oleifeara, Sauropus androgynus, Passiflora edulis, Piper pedicellatum, malebud of Musa arunachalensis and polygnum chinense were found to be rich in nutritional components with very low concentration of anti-nutritional components. But slightly higher concentration of anti-nutritional components were found in Moringa oleifera leaves, Sauropus androgynus and Passiflora edulis. The research work performed confirms that the wild edible plants are rich source of nutrient, vitamin and mineral supplements for indigenous tribal population and hence, reduce the vulnerability of local communities to nutrition food scarcity
  • Thumbnail Image
    ThesisItemOpen Access
    Effect of Organic and Inorganic Fertilizers on Growth, Yield and Quality of Papaya (Carica papaya L.) cv. Vinayak
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2017-07-25) Konyak, Shangpong M.; Wangchu, L.; Singh, Barun
    The present investigation to study the effect of organic and inorganic fertilizers on growth, yield and quality of papaya (Carica papaya L.) cv. Vinayak was carried out during January-December 2016 at Fruit Research Farm, Department of Fruit Science, College of Horticulture and Forestry, Central Agricultural University, Pasighat, Arunachal Pradesh. The experiment was laid out in Randomized Block Design with 13 treatments and 3 replications. The treatments were T1 ( 200 g N + 200 g P + 250 g K ),T2 (20 kg FYM), T3 (100 g N + 100 g P + 125 g K + 10 kg FYM), T4 (200 g N + 200 g P + 250 g K + Azotobacter 50 g + phosphate solubilizing bacteria 50 g + Azospirillum 50 g), T5 (20 kg FYM + Azotobacter 50 g + phosphate solubilizing bacteria 50 g + Azospirillum 50 g), T6 (100 g N + 100 g P + 125 g K + 10 kg FYM + Azotobacter 50 g + phosphate solubilizing bacteria 50 g + Azospirillum 50 g), T7 (200 g N + 200 g P + 250 g K + Azotobacter 50 g + phosphate solubilizing bacteria 50 g),T8 (200 g N + 200 g P + 250 g K + Azotobacter 50 g), T9 (20 kg FYM + Azotobacter 50 g + phosphate solubilizing bacteria 50 g), T10 (20 kg FYM + Azotobacter 50 g), T11 (100 g N + 100 g P + 125 g K + 10 kg FYM + Azotobacter 50 g + phosphate solubilizing bacteria 50 g), T12 (100 g N + 100 g P + 125 g K + 10 kg FYM + Azotobacter 50 g) and T13 (control). The treatment, T4 (200 g N + 200 g P + 250 g K + Azotobacter 50 g + phosphate solubilizing bacteria 50 g + Azospirillum 50 g) was found to significantly increase vegetative growth parameters including plant height (306.6 cm), stem girth (44.2 cm), number of leaves produced (126.6) and yield and yield attributing characters like fruit size (length = 22.6 cm and girth = 14.6 cm) , average fruit weight (1.4 kg) fruit yield per plant (33.8 kg/plant) followed by T7 (200 g N + 200 g P + 250 g K + Azotobacter 50 g + phosphate solubilizing bacteria 50 g) and least was observed in control. The minimum days to first flowering (105) and harvest (277) were recorded for the same treatment. With regards to quality parameters like total sugars, reducing sugars, non reducing sugars and ascorbic acid, treatment T6 (100 g N + 100 g P + 125 g K + 10 kg FYM + Azotobacter 50 g + phosphate solubilizing bacteria 50 g + Azospirillum 50 g) recorded the highest value. The observations recorded non significant were titratable acidity and TSS of the fruits. With respect to NPK content in leaf tissues, highest was recorded under T6. From the results of the present study, it can be concluded that the treatment, T4 i.e. 200 g N + 200 g P + 250 g K + Azotobacter 50 g + phosphate solubilizing bacteria 50 g + Azospirillum 50 g is the best treatment with respect to growth, yield and quality parameters in papaya.
  • Thumbnail Image
    ThesisItemOpen Access
    Effect of micronutrients and plant growth regulators on growth, yield and fruit quality of litchi (Litchi chinensis Sonn.) cv. Muzaffarpur under foothills of Arunachal Pradesh
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2017-07-26) R., Devaraja; Hazarika, B.N.; Wangchu, L.
    The effect of different micronutrients and plant growth regulators significantly influenced the plant growth characters viz., per cent increase in plant height (5.26 %) and per cent increase in canopy spread (6.12 %) which was recorded highest in T8 and was at par with T7. Shortest duration of flowering (21.63 days) was recorded by T6 at par with T5. Most of the fruit and yield parameters were significantly increased in which the highest fruit set was recorded in T5 (42.84 %) followed by T4 (42.10 %). The highest fruit size (37.30 mm) was recorded in T3 and was followed by T7 (37.04 g). Significantly increased fruit weight (22.88 g), aril weight (15.61 g) and juice content (9.89 ml) and decreased fruit cracking (5.07 %) was recorded in T7. Number of fruits per tree (1162.66), maturity (69.33 days) and fruit yield (26.82 kg/tree) were found to be significant and highest were recorded in T8 which is at par with T7. TSS (18.09 °Brix), total sugar (26.13 %), reducing sugar (14.49 %) and ascorbic acid (38.06 mg/100 ml) differed significantly where T1 recorded the highest and was observed to be at par with T7. Titratable acidity and malic acid however, were not significantly affected. All the shelf life parameters were significantly influenced by micronutrients and PGRs. The decreased PLW (11.46 %) was recorded in T8 and highest number of days in room temperature (3.93 days) was recorded in T7. Organoleptic test viz., colour (7.70), taste (8.08) and aroma (7.65) were significantly influenced by all treatments though highest was recorded in T1. From the present study it can be concluded that T8 was found to be significantly increased plant height, and canopy spread so it is best for vegetative growth parameters while, T1 significantly increased colour, taste, aroma and most of the biochemical parameters. So it can be concluded that T1 was best for most of the shelf life and quality parameters. T7 recorded significantly increased fruit weight, aril weight, juice content, number of days at room temperature and most of the parameters like plant height, canopy spread, maturity, number of days in room temperature, fruit yield, fruit size, physiological loss in weight, aroma, total soluble solids, total sugar, reducing sugar and ascorbic acid were found to be at par with highest whereas seed size was lowest. By this it can be concluded that T7 is best for growth, yield, shelf life and quality of litchi cv. Muzaffarpur.
  • Thumbnail Image
    ThesisItemOpen Access
    Identification and characterization of superior genotypes of Carambola (Averrhoa carambola L.) found in Arunachal Pradesh
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2017-08-25) Padun, Rebika; Singh, S. Romen; Hazarika, B.N.
    The experimental result showed that individual fruit weight ranged from 83.63 g (P20) to 300.00g (P14); fruit diameter 4.07 cm (P5) to 9.13 cm (P14); fruit length 6.83 cm (P4) to 15.93 cm (P14); juice content 25.00 ml (P4) to 61.67 ml (P14); seed/fruit 2.00 (P1) to 4.67 (P12); fruit yield 84.33 kg (P4) to 185.00 kg/tree (P8); TSS 5.03 (P12) to 14.97 0Brix (P11); Oxalic acid 0.01% (P2, P3,P5, P7,P8,P14 and P18) to 0.35% (P9); Ascorbic acid 25 (P17): to 68.00 mg/100g (P9); acidity 0.08 % to 1.22%; reducing sugar 3.20% (P3) to 11.93%; total sugars 3.40% (P3) to 12.80%(P11) and shelf life 10.67 days (P10) to 14 days (P17). Based on the results obtained from the present investigation, it can be concluded that, selected carambola genotypes exhibited noticeable variation in the morphological and biochemical characteristics. The genotypes P8 maximum yield (185 kg per tre per year), P11 highest TSS (14.950Brix), P1 lowest seed (2), P9 highest vitamin C (68mg/100g), P14 highest fruit weight (300g). SDS-PAGE analysis also showed considerable variation in band number of protein wich ranged from 14-38. Protein banding profile showed that the genotypes P6 and P4 are distantly related and P4 and P13 are closely related to each other. Thus, these findings illustrated the usefulness of physico-chemical characterization and biochemical marker as a tool for the crop improvement programs in carambola for screening the sweet genotype from the available genetic diversity and it will be useful for the development of a clonal variety in future.
  • Thumbnail Image
    ThesisItemOpen Access
    Standardisation of nursery technique for early growth and performance of Phoebe goalparensis Hutch. Under Eastern Himalayas.
    (College of Horticulture and Forestry, Central Agricultural University, Pasighat, 2017-08-17) Jana, Lapynsuk; Singh, Bikram; Kumar, Sanjeev
    The effects of different seed germination and nursery techniques for Phoebe goalparensis Hutch (Bonsum) were investigated in this study and was carriedout in the laboratory and research field of Department of Silviculture and Agroforestry, College of Horticulture and Forestry, Pasighat, Arunachal Pradesh in the year 2015-2017. The experiment in laboratory and field condition for seed was carried out in Complete Randomized Design with 8 treatments which were replicated 4 times. The treatments include, T1- Control (with pericarp), T2- Depulped and sowing in field, T3- Depulped and dipping in hydrogen peroxide (H2O2-2%) overnight, T4- Depulped and sun drying for 8 hours (one day), T5- Depulped and soaking in ambient water for 24 hours, T6- depulped and soaking in luke warm water for 24 hours, T7- Depulped, nicking and soaking in ambient waater for 24 hours and T8- Depulped, nicking and overnight soaking in giberellic acid (0.05%). Result show that highest germination percentage in lab (81.5%) and field (70.0%) and germination value inlab (0.87) and field (0.617) was recorded in treatment T8 [Depulped, nicking and overnight soaking in gibberellic acid (0.05%)]. The viability percentage of the seeds based on tetrazolium test was observed to be (84.33%) and this may be correlated with the highest germination percentage recorded in T8. Different nursery techniques on Phoebe goalparensis were analysed and carried out in Randomized Block Designwith 4 replications. The treatments include, T1- control (in transplanting bed), T2- control (under polybag), T3- Undercutting, T4 Undercutting and one time wrenching, T5- Undercutting and wrenching (4times), T6 -Undercutting and wrenching (6times), T7- Base cutting and T8- Hiko Trays (root trainers). Based on the field observations, the outplanting survival percentage was highest in T2 (96.21%)i.e., polybag at par with T7 (95.51%) i.e., base cutting followed by T6 (87.38%) i.e., Undercutting and 6 times wrenching and T5 (80.81%)i.e., Undercutting and 4 time wrenching indicates that polybag treatment cause poor seedling quality and inferior root deformation. In conclusion, tetrazolium test is a reliable method for determining the seed viability in Phoebe goalparensis. The seeds should be treated with nicking & soaking overnight in gibberllic acid (0.05%) before sowing after removal of pericarp for breaking seed dormancy and getting maximum germination. Base cutting (2.5cm) of polybag seedling, undercutting and wrenching is a successful contribution in improving the outplanting survival of plants corresponding with T7, T6 and T5 performing satisfactory outplanting survival