Nature of plant resistance in recombinant inbred lines of Basmati370/ ASD16 cross to rice brown planthopper (Nilaparvata lugens Stal.)

摘要

A set of one hundred and eighty recombinant inbred lines (RILs) from a cross Basmati370/ASD16 were subjected to green house screening to assess the level of BPH resistance. Phenotypic analysis of parents and the RILs were carried out using the screening parameters viz., nymphal settling preference, nymphal survival, nymphal developmental period, growth index, sex differentiation, wing dimorphism, population build-up, functional plant loss index (FPLI) and plant dry weight loss index (PDWLI) and correlation analysis was carried out. The RILs displayed continuous variation for the resistance parameters studied with a high frequency of transgressive segregants.