2. Institutional Publications

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    Inheritance of fruit colour in normal and irradiated progenies of brinjal
    (Kerala Agricultural University, 1980) Gopimony, R; Mary K George; Gopinathan Nair, V
    The inheritance of fruit colour in brinja! (Solarium metongena) was studied by analysing the progeny belonging to the F, M2, FjM^ and F3M generations resulting from a cross between varieties insanum and purple giant followed by gamma irradiation. The F0 phenotypic frequencies fitted very well with the dihybrid ratio indicating that the fruit colour is governed by two independently inherited genes. Three colour mutants, namely, purple, mottled green and white were induced in the F]MI generation by the irradiation. The appearance of these mutants is explained as due to independent mutations at either or both of the two genetic loci. The colour pattern in the F3M., progenies derived from the F, Mj mutants substantiates the two gene mechanism for the inheritance of fruit colour. The genotypes for the different colour types in the FL, F, and FlMl mutants have been indicated and discussed.
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    Optimum size and shape of plots for field experiments in brinjal
    (Kerala Agricultural University, 1986) Hariharan, V; Jacob Thomas, M; George, K C
    A uniformity trial in brinjal (Solatium melongena L). was conducted at main campus of the Kerala Agricultural University, Vellanikkara, during the third crop season, 1980. Observations on yield, number of fruits and primary branches were recorded. The variability among plots of different sizes and shapes was determined by calculating coefficient of variation (CV). It was observed that an increase in the plot size in either direction decreased the CV. But decrease was more rapid along N-S direction. Long and narrow plots showed lower CV than approximately square plots. The observed relation between plot sizes and variance was in conformity with Smith's variance law. At larger plot sizes the regression line showed a tendency to come down although negligible. The optimum plot size observed through smith's method and maximum curvature method was almost same. From the above consideration a plot size of 8.64 m2 (9.6 m X 0.9 m) was found to be most advisable for conducting most of the field experiments in brinjal.
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    Directional occurrence of coccinellid predators DM relation to the distribution of aphids in brinjal
    (Kerala Agricultural University, 1995) Veeravel, R; Baskaran, P
    Two field experiments were conducted at the Annamalai University Experimental Farm, Annamalaiiiagar to determine the directional occurrence of coccinellid predators in relation to its prey aphid and growth stage of the host plant in an undisturbed hrinjal eco-system. With regard to directional occurrence, the west located plots harboured the maximum number of coccinellids in all the growth stages of the host plants corresponding with maximum aphid population.
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    On the occurrence of Selepa docilis butler as a pest of brinjal in Mysore state
    (Kerala Agricultural University, 1973) Viswanath, B N; Nageshghandra, B K; Balasubramanian, R