Genetic Parameters of Drought Related Traits in Rice
Journal Title: International Journal of Engineering and Science Invention - Year 2017, Vol 6, Issue 9
Abstract
Early drought is the main environmental problem of rice production in Assam during Aahu season. Eight Aahu rice genotypes were examined to evaluate the nature and magnitude of variability, heritability and genetic advance of six drought related traits. The mean sums of square for all the six characters were significant indicating the presence of substantial amount of variability. All traits had showed high phenotypic coefficient of variation (PCV) than their corresponding genotypic coefficients of variation (GCV) indicating influence of environment on these traits. High estimates of heritability coupled with high genetic advance as per cent of mean were observed for traits viz. Tillers per plant (89.00 and 62.15), length of root (21.37 and 19.48), number of xylem vessels in root (82.12 and 44.88), number of stomata on upper surface (91.44 and 39.13), number of stomata on lower surface (98.28 and 58.08) and flag leaf length (78.00 and 36.29) indicating role of additive genes on the expression of these traits and possibility of fruitful phenotypic selection on the basis of these traits for drought tolerant segregants.
Authors and Affiliations
Dr. Pallabi Dutta, Prof. P. K. Borua
Keywords
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