2. Institutional Publications

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    Transmission of Pseudomonas Solanacearum through tomato seeds
    (Kerala Agricultural University, 1980) Rema Devi, L; Menon, M R
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    Relative efficiency of different selection methods in tomato improvement
    (Kerala Agricultural University, 1988) Rajan, S; Peter, K V
    Singb seed descent from elite selection (SSDES) was found to ba effective to improve .different economic characters under simultaneous selection, in tomato as compared to mass, pureline and bulk methods of selection.
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    Dummy variable approach for analysing yield response of plant genotypes to nitrogen levels: case study of tomato
    (Kerala Agricultural University, 1990) Subrahmanyam, K V; Tikoo, S K; Prabhakar, B S; Vishnu Shukla; Srinivasan, V R
    For analysing the data from field experiments involving qualitative and quantitative variables, a new approach of using dummy variables for qualitative variables in the regression equation was tried in with the help of two years data from the experiments conducted on tomato crop involving four genotypes and four nitrogen levels. The results of analysis showed that using dummy variables for qualitative variable viz., genotypes in the regression analysis has the advantage of single equation taking care of differences between genotypes as well as their individual contribution to yield along with other quantifiable inputs ake nitrogen. Besides having comparable predicting efficiency of yield with that of individual functions for each genotype based on ANOVA, dummy variable approach saves a lot of time and labour especially when a number of genotypes are involved in the experiment, as otherwise a separate equation has to be fitted for each genotype to catch their effect on yield.
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    Line X tester analysis for yield and processing characteristics in tomato
    (Kerala Agricultural University, 1995) Alice Kurian; Peter, K V
    Combining ability analysis of 15 hybrids (3 lines x 5 testers) and 8 parents in tomato indicated the role(s) of additive gene action for the characters studied, demanding biparental approach and recurrent selection for improvement. Hybrids LE 206 x Ohio 8129 and Sakthi x TH 318 for total solids, Sakthi x HW 208 F and LE 206 x Ohio 8129 for insoluble solids and LE 206 x Ohio 8129 and LE 206 x St 64 for lycopene are promising for improvement of quality traits.
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    Genetic variability, heritability and genetic advance for yield and processing characteristics in tomato
    (Kerala Agricultural University, 1995) Alice Kurian; Peter, K V
    Genetic variability and heritability were studied in 64 tomato lines during September 1986 to January 1987. Significant difference was observed for all the characters studied. Index to earliness and fruit cracking showed high genotypic coefficient of variati on. High heritabili ty coupled with high genetic advance was recorded for insoluble solids and storage life.