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2019 - 201912020 - 20233
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Author: Shubham × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Genetic variability and heterosis studies for morphological and fruit yield traits in okra
    (CCSHAU, Hisar, 2023-08) Shubham; Dhankhar, S. K.
    A field experiment entitled “Genetic variability and heterosis studies for morphological and fruit yield traits in okra” was conducted at Research Farm of the Department of Vegetable Science, CCS Haryana Agricultural University, Hisar during spring-summer and rainy season of 2022 using line x tester mating design with a view to study the extent of heterosis, GCV and PCV in advance inbred lines of okra and to find out correlation and path coefficients for fruit yield and its attributes. The experimental material comprised of twenty-one genetically diverse genotypes of okra involving twenty lines and one tester (HB-MS-1 Line) and standard check HBH-142. These lines and tester were crossed using line x tester mating design during spring-summer season of 2022, to produce twenty F1 crosses. Analysis of variance for different quantitative characters studied during the experimentation indicated highly significant differences among the parents, crosses and commercial check at 5% and 1% level of significance. In terms of yield per hectare, four crosses viz., HB-MS-1 X HB-20-3-4, HB-MS-1 X HB-11-3-4, HB-MS-1 HBTC-6-1-2, and HB-MS-1 x H.U showed significant positive economic heterosis over the standard check HBH-142 for yield and its contributing characters. Maximum phenotypic and genotypic variability was recorded for the trait plant height, first fruit node, fruits per plant, number of branches per plant and inetrnodal length. High estimates of heritability along with high genetic advance as percent mean was observed for plant height, first fruit node, fruits per plant, number of branches per plant and inetrnodal length. Fruit yield per plant were found to have positive correlation with with plant height, number of branches, fruit length, fruit diameter, fruits per plant, and negatively correlated with days to 50 percent flowering, internodal length, first fruit node.
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    ThesisItemOpen Access
    Assessment of genetic diversity for yield, fibre and seed quality traits in desi cotton (Gossypium arboreum L.)
    (CCSHAU, Hisar, 2023-07) Shubham; Minakshi Devi
    The present investigation was conducted at CCS Haryana Agricultural University, Hisar during kharif 2022 to evaluate genetic diversity among 50 genotypes of desi cotton based on 23 yield contributing, fibre and seed quality traits along with eight qualitative traits for morphological characterization. Variation among genotypes were found for leaf shape, leaf pubescence, leaf nectaries, petal colour, petal spot, boll shape and boll opening except pollen colour. Analysis of variance revealed presence of variability for all the traits among the genotypes except uniformity index. The GCV and PCV values were high for number of monopods/plant, seed cotton yield, lint yield, gossypol, sugar and phosphorous content. Additive gene action was dominant for the traits viz., number of monopods/plant, number of sympods/plant, boll weight, seed index, lint index, number of bolls/plant, seed cotton yield, lint yield, gossypol, sugar, crude fibre, crude protein, oil, phosphorous, sodium and potassium content as high heritability coupled with high genetic advance was reported for these traits. Correlation studies showed that seed cotton yield/plant was significantly and positively correlated with plant height, number of monopods/plant, number of sympods/plant, number of bolls/plant, boll weight, lint yield, lint index, ginning outturn and fibre fineness. Path analysis revealed that maximum direct effect on seed cotton yield was by lint yield followed by lint index, boll weight and number of bolls/plant. Genetic diversity analysis showed the presence of substantial genetic divergence. All 50 genotypes were grouped into three main clusters. The maximum inter-cluster distance was observed between Cluster II and III. Potassium content showed highest contribution towards divergence followed by oil, ginning outturn, sugar, lint yield, crude protein content. On the basis of mean performance; the genotypes HD 637, HD 640, HD 639 and HD 629 (high seed cotton yield), P 536 and P 410 (good fibre quality), HD 639 and HD 627 (high oil, crude fibre and crude protein) and DA-4/02 (lowest gossypol and highest crude fibre) were found promising. Hence, these genotypes can be utilized in breeding programmes for yield, fibre and seed quality improvement. Hence, evaluation of yield contributing, fibre and seed quality traits based on genetic diversity was helpful in identifying promising genotypes that can be utilized in future cotton breeding programmes.
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    ThesisItemOpen Access
    Farmers’ Perception towards Over-exploitation of Irrigation Resource in Haryana
    (CCSHAU, Hisar, 2021-09) Shubham; Mukteshawar, Rati
    The study was conducted to know the perception towards over-exploitation of irrigation water, awareness level of water management practices, constraints faced by the farmer in adoption of water conservation practices in Haryana. The study revealed that most of respondents belonged to middle age group (35-50 years), education up to matric level, belonged to joint family member up to 5-7. Major occupation was farming with medium size of land holding, most of the respondents had medium level of mass media exposure and extension contacts. The most of respondents were agreed towards ‘Change in ground water availability’ (450) and ‘Ground water table goes down’ (450) and ‘Mostly farmers stick with rice wheat cropping pattern’ (434). The most of respondents had high level of awareness towards ‘Laser levelling of field helps in saving of water’ (404), ‘Zero tillage in paddy-wheat crop rotation’ (378) and ‘Well maintained water supply system’ (367). The most serious constraints faced by respondents were ‘Availability of canal water is not sufficient (384), ‘Difficulty to arrange water ways from canal to field’ (383) and ‘Low level of income of farmer’ (379). The most effective suggestions were ‘MSP of alternative crop should be more than paddy crop’ (436), ‘Proper implementation of govt schemes related to water conservation’ (432) and ‘Field levelling may increase the efficiency of water’ (426). More than two third of the respondents were aware about the water management practices, and most of respondents were agreed towards the over-exploitation for irrigation water, more than three fourth of respondents faced the constraints in adoption of water management practice while, 70.01 per cent said that suggestive measures were effective to increase the adoption of water management practices.
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    ThesisItemOpen Access