Correlation studies for yield components in oats germplasm
Forty eight oats genotypes were evaluated in a Randomized Complete Block Design to analyse the existence of variation and correlation among yield and yield components during, rabi, 2013 - 2014. In this study, based on the experimental data, ANOVA was worked out for different characters. The variability parameters viz., mean, range, standard error of difference (SEd) and critical difference (CD) were worked out. The plant height exhibited highest mean square value 620.81** than other characters which signified at 0.01 probability level. Among forty eight genotypes, TNAs 48 showed highest total number of tillers per plant (13.67), number of productive tillers per plant (10.00), groat weight per primary panicle (0.96g), kernel weight per primary panicle (0.81g) and fodder yield per plant (50.99g), followed by TNAs 20 for panicle exertion (18.23cm), single plant groat yield (8.89g) and single plant kernel yield (5.70g) and TNAs 22 for thousand groat weight (57.81g) and thousand kernel weight (56.00g) than other genotypes included in this study. Among the characters studied, groat weight per primary panicle and kernel weight per primary panicle showed the least SEd (0.15) value followed by single plant kernel yield (0.57g), single plant groat yield (0.68g) and days to 50% flowering (0.77) which showed the least influence by environmental variations. Hence, the selection of genotype with higher groat weight and kernel weight per panicle will be a fruitful exercise. According to correlation coefficient analysis, single plant kernel yield was positive and significantly correlated with days to 50% flowering, total number of tillers per plant, number of productive tillers per plant, panicle exertion, groats weight per primary panicle, kernel weight per primary panicle and single plant groat yield. Hence, these traits should be used as selection criteria to improve oats genotypes with higher grain yield potential.
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