2. Institutional Publications

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    Cytological studies on four inter varietal crosses of capsicum annuum
    (Kerala Agricultural University, 1975) Manikantan Nair, P; Mary K George
    Cytological studies of microsporocytes in four hybrids and five parents of the varieties of Capsicum annuum were conducted. Variety local blue was taken as the seed parent. The pollen parents Included varieties, Russian, Indian long red, Chinese g-'ant and Oskosh. All the four crosses revealed pronounced heterosis as regards pollea size. Further, all the hybrids manifested the presence of ring quadrivalents, chain quadrivalents, and trivalents while the hybrid local blue x Indian long red contained univalents, pycnotic behaviour, unequal distribution and anaphase bridges. The abnormal meiotic behaviour of microsporocytes had a positive correlation on the pollen sterility and affected the ultimate fruit set.
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    Crossability studies and analysis of incompatibility in three species of capsicum
    (Kerala Agricultural University, 1977) Radhakrishnan, K P; Mercy, S T; Mary K George
    In the present study interspecific hybridization could be successfully done among 3 species of Capsicum viz., C. annuum, C. fruiteseens and C. pendutum by the technique of cross pollination after amputation of the upper part of style along with the stigma followed by application of 5% sucrose solution on cut surface of the style. Embiyological analysis of the fertilized ovaries of self and cross combinations showed that in the incompatible combinations the embryosacs degenerated indicating failure of fertilisation. Further when pollination was done on the cut surface of the amputated styles after the application of 5% sucrose solution normal embryo development could be observed as in the case of selfed ovaries.
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    Genetic distance and heterosis in interspecific crosses of capsicum
    (Kerala Agricultural University, 1986) Krishnakumari, K; Peter, K V
    Significant heterosis was observed for plant height, days to flower, days to first harvest, days to maturity, fruits/plant, green fruit yield/plant, seeds/fruit and seed yield/plant in 10 interspecific F1 hybrids of chilli. Jwala and Green Chuna were the farthest while K2 and Ornamental Type, the nearest. Maximum oleoresin was in Jwala (16.83%) and in the hybrids, Jwala x Ornamental Type (16.6%).
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    Combining ability analysis in capsicum annuum
    (Kerala Agricultural University, 1992) Girija Devi, T; Peter, K V
    Combining ability analysis revealed the preponderance of additive gene action for green fruit yield per plant in chilli. Non-additive gene action controlled expression of plant height and days to first green fruit harvest.
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    Seasonal evaluation of capsicum species and cultivars for oleoresin recovery
    (Kerala Agricultural University, 1999) Mini, C; Abdul Vahab, M; Indira, P
    Evaluation of nine chilli genotypes for oleoresin recovery under ihree different seasons identified Arka Lohit as the highest yielderofoleuresin. Genotypes were higher in oleoresin content during winter. Considering the fruit yield and oleoresin recovery together, summer was the best season for oleoresin yield.