Browsing by Author "Unnithan, V K G"
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Item Clustering genotypes based on genotype x environment interaction(Kerala Agricultural University, 1993) Laly John, C; Unnithan, V K GA procedure to form clusters of genotypes such that a genotype is stable relative to the cluster to which it belongs to and not so relative to any other is suggested.Item Estimation of leaf area in banana var. nendran (Musa aab group) using linear parameters(Kerala Agricultural University, 1984) Rajeevan, P K; Unnithan, V K G; Geetha, C KItem Gabriel's method of grouping treatments in analysis of variance(Kerala Agricultural University, 1987) Malika, V; Unnithan, V K GItem Genetic analysis of some quantitative characters in pigeonpea(Kerala Agricultural University, 1994) Achamma Oommen; Namboodiri, K M N; Unnithan, V K GOut of the eleven quantitative characters studied in pigeonpea, days to flowering alone was influenced by non-additive genes and all the remaining characters by additive genes. The proportion of dominant and recessive genes was equal for plant height and number of clusters per plant, whereas more than one recessive gene was present for eveiy dominant gene in the expression of days to maturity. The remaining eight characters showed the presence of one to two dominant genes for every recessive gene.Item Genetic analysis of yield and yield components in pigeonpea (Cajanus Cajan (L.) Mill sp.(Kerala Agricultural University, 1999) Achamma Oommen; Namboodiri, K M N; Unnithan, V K GGeneration mean analysis carried out in pigeonpea to estimate gene effects revealed that, yield and yield components AK under all the three types of gene action. v\/.-, additive, dominance and epistasis. Hence reciprocal recurrent selection seems to be the best suited method of breeding for improvement of this crop.Item Optimum plot size for cocoa through multivariate analysis(Kerala Agricultural University, 1992) Sheela, M A; Unnithan, V K GOptimum plot size was determined for cocoa in the multivariate case by considering three characters viz., canopy spread, yield and girth. Single tree plot was found optimum by the method of maximum curvature as well as by minimising the number of trees required to achieve 5% error.