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Theses

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19863
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Subject: Plant Breeding × Author: KAU × End date: 1986 × Start date: 1986 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Evaluation of the productivity of chilli hybrids
    (Department of Plant Breeding, College of Agriculture, Vellayani, 1986) Elizabeth Philipose; KAU; Manikantan Nair, P
    A study was conducted at College of Agriculture, Vellayani, for evaluating the productivity of six intervarietal chilli (Capsicum annuum L.) hybrids obtained by crossing four inbreds in all possible combinations without reciprocals. Since the germination of the combination PR x PCl was poor, the other five hybrids along with four parents were evaluated in a 9 x 3 RED during 1984-85 and 1985-86. Observations on twenty quantitative and five five qualitative attributes were recorded. The statistical analysis included analysis of variance , pooled analysis and the estimation of genetic parameters, correlations among sixteen quantitative traits and three types of heterosis namely relative heterosis, heterobeltiosis and standard heterosis
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    ThesisItemOpen Access
    Cross compatibility between abelmoschus esculentus and abelmoschus manihot and hybrid sterility
    (Department of Plant Breeding, College of Agriculture, Vellayani, 1986) Prabha, P; KAU; Gopakumar, K
    Observations made during 1985, while conducting a breeding experiment on interspecific hybridization in the genus Abelmoschus of family MALVACEAE, reveal that the virus caused Yellow Vein Mosaic disease susceptible bhindi varieties of the cultivated species esculentus cross readily with the resistant wild/ semi-wild species manihot. Absence of interspecific mating incompatibility is of advantage in programmes of breeding for evolving improved varieties of the crop with built-in-resistance. The first generation hybrids though do not produce viable seeds in profusion, are not totally sterile. The scanty viable seed recovery from the hybrids against the parents is suspected to be due to chromosomal differentation that could have taken place during speciation in the genus
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    ThesisItemOpen Access
    Evaluation of the F2 generation of interspecific hybrids of Abelmoschus with reference to yellow vein mosaic resistance and yield
    (Department of Plant Breeding and Genetics, College of Agriculture, Vellayani, 1986) Honey Mathews; KAU; Gopimony, R
    A study was conducted at the College of Agriculture, Vellayani during 1984-85 aimed at evaluating the F2 generation of interspecific hybrids between the yellow vein mosaic susceptible cultivars of Abelmoschus esculantus and the resistant semi-wild species. A manihot for yellow vein mosaic resistance and yield and selecting desirable F2 recombinants