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Theses

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2015 - 201722
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Subject: Vegetable Science × End date: 2017 × Start date: 2015 ×
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Now showing 1 - 9 of 22
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    ThesisItemOpen Access
    Studies on combining ability and heterosis for seed yield and its component traits in cowpea [Vigna unguiculata (L.) Walp.]
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2015-05) Varan, Risha; Singh, Y.V.
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    ThesisItemOpen Access
    Effect of black plastic mulch on growth and yield of capsicum cv. Indra (F1 hybrid) under different cultivation environments
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2017-06) Raturi, Shobhna; Uniyal, S.P.
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    ThesisItemOpen Access
    Characterization of brinjal (Solanum melongena L.) germplasm
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2017-06) Banerjee, Swadesh; Verma, Alka
    An experiment on “Characterization of Brinjal (Solanum melongena L.) Germplasm” was undertaken during kharif season of 2016. Thirty-eight genotypes including two checks were evaluated in RBD with three replications in Vegetable Research Centre GBPUA&T, Pantnagar. Analysis of variance revealed highly significant differences among genotypes for all the characters studied. The genotypic and phenotypic coefficients of variation were high for fruit length, fruit diameter, and number of fruits per plant, fruit weight, marketable yield per plant and yield per plant. A narrow range of genetic difference between PCV and GCV of these traits indicates that a little influence of environment on phenotypic expression of these traits. Very high heritability along with high genetic advance as per cent over mean was recorded for the character like fruit diameter, fruit weight indicating direct selection for these traits would prove useful. Marketable yield per plant was found positively and significantly correlated with number of primary branches, number of fruits per plant and yield per plant. This suggested selection for these traits would be more useful to improve the marketable yield per plant in brinjal. The higher magnitude of positive direct effect by yield per plant, fruit weight, number of fruit per plant, days to 50% flowering, marketable yield per plant, plant height, number of primary branches and days to first harvest on total yield per hectare was observed suggesting their true, positive and significant association with yield per hectare. Therefore, direct selection for these traits would be fruitful for improvement of yield. Thirty eight genotypes were classified into seven clusters following cluster analysis. Maximum intra-cluster distance was observed in cluster III showing existence of wide genetic divergence. Maximum inter-cluster D2 values was observed between the clusters IV and VII indicating that the genotypes in these clusters can be used as a parents in hybridization programme. Among the characters, number of fruits per plant (31%) shows maximum contribution towards the diversity followed by fruit diameter (25%) and fruit weight (16%). The genotypes Pusa Kaushal, Pusa Bhairav, Pusa shyamla, GBL-1 and SMB-115 as long fruit shape, PB-70 and Debmallika as round fruit shape were found promising for the entire yield related traits. Above statistical information will help for further improvement of this crop.
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    ThesisItemOpen Access
    Variability, heritability and genetic advance studies in mid-season cauliflower (Brassica oleracea var. botrytis L.)
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2017-06) Vivek Kumar; Singh, Dhirendra Kumar
    The present study was undertaken at Vegetable Research Center, G.B. Pant University of Agriculture and Technology, Pantnagar, Udham Singh Nagar (U.K.) during September- December, 2015. Fifty seven genotypes of cauliflower were grown in Augmented Block Design II including five checks (Pusa Early Synthetic, Pant Gobi-4, Pant Gobi-3, Pusa Sharad, Pusa Pausjha) which were arranged in four blocks with eighteen genotypes in each block inclusive of five checks. The study was primarily focused on assessing variability, heritability, genetic advance, correlation coefficient, path coefficient, principal component analysis and D2 analysis. Observations were recorded on 16 quantitative characters viz., leaf length, leaf width, petiole length, plant height, plant spread, number of leaves per plant, stalk length, days to curd maturity, gross curd weight, marketable curd weight, curd length, curd breadth, net curd weight, harvest index, curd size index and curd yield per hectare. Analysis of variance revealed significant differences among all the genotypes for majority of the characters except plant spread, curd length and curd size index. On the basis of yield contributing characters the following genotypes were found promising viz., INBPCF 120, 2013/CAUMVAR-6, PCF-93, PG-5 and PCF-246. High heritability coupled with greater genetic advance was observed for gross plant weight. Curd yield per hectare showed positive and highly significant correlation with marketable curd weight, gross plant weight, net curd weight, curd breadth and plant height. Path coefficient analysis revealed that net curd weight exhibit high positive direct effect towards total yield while harvest index exerts a negative direct effect towards curd yield per hectare. The Principal component analysis showed that the first principal component account maximum 45.69% variation of total variation, while the first five principal component axes together with explained 81.72% variation, suggesting first five principal axes are adequate to explain the variation in reduced dimension. Genetic divergence through D2 analysis revealed maximum inter-cluster distance between clusters IV and VII followed by cluster IV and VIII therefore, it is recommended that genotypes grouped under cluster IV, VII and VIII were found promising for most of the yield attributes, thus can be utilized in future cauliflower breeding programme for the development of superior varieties.
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    ThesisItemOpen Access
    Studies on heterosis, combining ability and molecular diversity in cucumber (Cucumis sativus L.)
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2017-07) Sahoo, Tusar Ranjan; Singh, D.K.
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    ThesisItemOpen Access
    Effect of nitrogen scheduling on growth, yield and quality of potato (Solanum tuberosum L.)
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2017-07) Pandey, Pooja; Manoj Raghav
    The present investigation entitled “Effect of nitrogen scheduling on growth, yield and quality of potato (Solanum tuberosum L.)” was carried out during winter season of two consecutive years 2014-15 and 2015-16 at Vegetable Research Centre, G.B. Pant University of Agriculture and Technology, Pantnagar, U. S. Nagar, Uttarakhand. The experiment was laid out in randomized block design with three replications having ten treatments in each. During the study, observations for growth characters, yield characters, quality attributes, nitrogen uptake, nitrogen use efficiency and apparent recovery were analyzed. Besides of this, to assess the profitability, cost of cultivation, net profit and benefit-cost ratio also were worked out. Two year investigation revealed that nitrogen scheduling significantly influenced the performance of potato crop. Among all the treatments, T9 (25% N of RDF as basal + 50% top dressing at 25 DAP + one foliar spray of urea @ 3% at 40 DAP) was proved best with respect to overall plant growth, tuber yield (36.62 t ha-1 and 31.53 t ha-1) and nitrogen apparent recovery (65.8 % and 62.5 %) and also registered maximum benefit-cost ratio (1.69 and 1.48) during both the years, respectively. It not only recorded 7.23 % higher yield over recommended treatment T1 (50% N of RDF as basal + 50% top dressing at 25 DAP) but also save 15 % nitrogen (25 kg ha-1). While, treatment T7 (50% N of RDF as basal + two foliar spray of urea @ 3% at 25 & 40 DAP) produced maximum quality tubers having dry matter (19.4 % and 19.3 %) and specific gravity (1.09 g/cm3) during both the years, respectively. Based on overall performance, it could be concluded that under prevalent climatic conditions of tarai region of Uttarakhand, 25% N of RDF as basal + 50% top dressing at 25 DAP + one foliar spray of urea @ 3% at 40 DAP can be recommended to get maximum potato tuber yield and higher net return whereas, 50% N of RDF as basal + two foliar spray of urea @ 3% at 25 & 40 DAP can be recommended to get quality tubers.
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    ThesisItemOpen Access
    Studies on morphological and biochemical characterization of cucumber (Cucumis sativus L.) germplasm
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2017-07) Ahirwar, Chandan Singh; Singh, D.K.
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    ThesisItemOpen Access
    Studies on the effect of chitosan on micropropagation of jackfruit
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2017-06) Divyangana; Rai, Ratna
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    ThesisItemOpen Access
    Effect of fertigation levels and polyethylene mulch on growth and yield of chilli
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2017-06) Beniwal, Deepa; Bhatt, Lalit