Genotypic And Phenotypic Variance And Correlations In S5 Lines Of A Pearl Millet Population (pennisetum Americanum (l.) Lcckc)

There were 78 S5 lines of a nutlet population evaluated in two locations for two years in 1998 and 1992using a simple 9x9 lattice design because of the great number of genotypes involved. Mean performance overthe two locations were similar for some traits, hut different for certain others. Analysis of variances pooled overthe years and locations indicated that genotypic mean square estimates were significant at 1% level ofprobability for plant height, car length, ear weight and threshing percentage, and at 5% level for grain yield perear, days to 50% heading and days to 50%, blooming. Over the locations, the estimates were significant at 1%level for noding and threshing percentage. Both negative and positive correlation coefficients were observedand for a larger number of the associations in the population, the genotypic correlation coefficients wereslightly higher than the phenotypic. The highest correlation coefficient was obtained between the ear weight andthreshing percentage. The tallest plants were also positively correlated with plant noding (rg 0.910). Basedon the correlation coefficient obtained in this study, plant nodding and ear characters would be best selectionindices for obtaining a high yielding millet population. The closeness between phenotypic and correlationcoefficient will render efficient any selection based on the phenotype,

Get Full Work

Report copyright infringement or plagiarism