Genetic variability, heritability and genetic advance of grain quality in hybrid rice.

摘要

The present investigation was under taken to study the extent of variability and genetic parameters in 15 rice hybrids and five checks for seventeen qualitative traits along with grain yield. The magnitude of difference between PCV and GCV was relatively low for all the traits, indicating less environmental influence. High (>20%) GCV and PCV were recorded for gelatinization temperature and gel consistency. Heritability estimates were found to be high (>61%) for all the characters except breadthwise expansion. High heritability coupled with high genetic advance was observed for Kernel breadth, Kernel length/breadth ratio, Kernel breadth after cooking, Kernel length/breadth ratio after cooking, Gel consistency, volume expansion ratio, gelatinization temperature, amylose content and grain yield.