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Master Degree Theses

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Subject: Genetics and Plant Breeding ×

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Now showing 1 - 9 of 239
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    ThesisItemOpen Access
    Genetic Variability, Correlations and Path Coefficient Analysis of Grain Yield in Some Rabi Types of Sorghum [Sorghum bicolor (L.) Moench
    (Botany Department, N. M. College of Agriculture, 1977-02) Dhimmar, Zaverbhai Ranchhodbhai; Desai, K. P.
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    ThesisItemOpen Access
    Genetic Analysis in Rice (Oryza Sativa L.) For Salt Tolerance under Coastal Salt Affected Soil
    (Genetics and Plant Beeding Department, N. M. College of Agriculture Gujarat Agricultural University, 2012-05) Singh, Yashlok; Patel, P. B.
    The experimental material, comprising of four females (line s ), twelve males (testers) and their 48 hybrids developed through line x tester 'mating design along with two checks, was grown in a randomized block design with three replications at Coastal Soil Salinity Research Station. Danti-Umbha rat, Navsari Agricultural University, Navsari, Gujarat during khari{ 2011-12. The main objective of the experiment was to study heterosis, combining ability and nature of gene action for yield and its component traits under coastal salt affected soil. Analysis of variance indicated significant differences among the parents and hybrids for all the charl!cters studied, which revealed existence of variability in the genotypes. Based on mean performance, NAUR-I and IR-71907 among females and NVSR-6079, CSR-27 and IR-72049 among males were found superior for grain yield and most of the yield attributing traits. Among hybrids, .Iaya x IET-18710, NAUR-I x IR-71829, and IET-15429 x IET-18710 exhibited highest mean performance for grain yield and the major yield components. In general, the parents showing superior performance gave superior hybrids and higher magnitude of heterosis in hybrid combination. Among 48 hybrids, the maximum value of heterobeltiosis for grain yield per plant was observed in lR-7l907 x IR-71829, JAYA x IET-18710 and IR-71907 x IET-20036. On the other hand 33 hybrids exhibited significant positive standard heterosis over Dandi, while only 24 hybrids depicted significant positive standard heterosis over CST-7-J. The highly heterotic response in these hybrids for grain yield per plant resulted due to significant positive heterosis for yield contributing characters like panicle length, productive tillers per hill, number of grains per panicle andl 000 grain weight.
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    ThesisItemOpen Access
    Genetic Variability, Character Association and D2 Analysis in Rice [Oryza sativa (L.)]
    (Agricultural Botany Department, N. M. College of Agriculture Gujarat Agricultural University, 2008-06) Sreeparvathy, P. V.; Vashi, R. D.
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    ThesisItemOpen Access
    Studies of gene Effects of Yield, its Components and Fibric Quality Characters in G. herbaceum L. cotton
    (Botany Department, N. M. College of Agriculture, 1987-06) Desai, Rajendra Thakorbhai; Desai, R.T
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    ThesisItemOpen Access
    Study of Interspecies Hybridization in Cotton
    (Agricultural Botany Department, N. M. College of Agriculture Gujarat Agricultural University, 1983-05) Chaudhari, Pravinbhai Paratapbhai; Mehta, N. P.
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    ThesisItemOpen Access
    Heterosis and Stability Analysis in Fodder Sorghum (Sorghum bicolor (L.) Moench)
    (Agricultural Botany Department, N. M. College of Agriculture Gujarat Agricultural University, 1991-08) Popatbhai, Patel Mansukh; Patel, M. P.
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    ThesisItemOpen Access
    Variability, Heritability, Genetic Advance, Correlation and Path Coefficient Analysis in Desi Cotton (Gossypium herbaceum L.) with Special Reference to Oil Content
    (Agricultural Botany Department, N. M. College of Agriculture Gujarat Agricultural University, 1990) Patel, Maheshkumar Maganlal; Mehta, N. P.
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    ThesisItemOpen Access
    Genetic variability, Correlation and Path Analysis in Moth Bean [vigna aconitifolia (Jacq) marechal]
    (Agricultural Botany Department, N. M. College of Agriculture Gujarat Agricultural University, 2004-12) Dahyabhai, Pael Jigneshkumar; Desai, N. C.
    branches per plant, number of clusters per plant and number of pods per plant. High heritability coupled with high genetic advance was exhibited by number of branches per plant. grain yield per plant , number of clusters per plant and number of pods per plant. Thus, phenotypic selection would be effective for genetic improvement in these traits. Correlation analysis revealed th at grain yield per plant was found to be highly significant and positively corre lated with number of pods per plant. number of clusters per plant, harvest index, number of branches per plant, days to 50 per cent flowering . days to maturity and plant height at genotypic and phenotypic levels. These yield contributing characters also possessed highly significant and positive association among themselves. Path co-efficienl analysis indicated highest positive direct effect of number of pods per plant followed by IOO-seed weight, plant height, days to 50 per cent flowering and harvest index. Protein content, number of seeds per pod. number of clusters per plant, number of branches per plant. days to maturity had negative direct effect while pod length had lower positive value. Based on these finding it can be suggested that for improving grain yield in moth bean more emphasis should be given to number of pods per plant, I ~O-seed weight, plant height, harvest index and days to SO per cent flowering while making selection.
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    ThesisItemOpen Access
    Estimation of Combining Ability in f2 Populations of Sorghum [Sorghum bicoior (L) moench]
    (N. M. College of Agriculture, Gujarat Agricultural University, 1987-07) Baldha, Purushottam L.; Desai, K.B