CHARACTER ASSOCIATION STUDIES AND PATH COEFFICIENT ANALYSIS OF AGRO-MORPHOLOGICAL TRAITS IN LANDRACES OF RICE IN BIHAR

The study aimed to investigate the correlation between various traits and grain yield per plant, as well as to pinpoint the specific traits that directly or indirectly influence yield.It was conducted at the Rice Breeding Section in Pusa, Samastipur during the kharif season of 2018, spanning from June 26 to December 28.Twenty-three landraces of rice were planted using a Randomized Complete Block Design (R.C.B.D.) with three replications.Days to fifty percent flowering showed a positive relationship with days to maturity, plant height, stem thickness, panicle length of main axis, root volume, and panicle number per plant.The width of leaf blade, 1000 grain weight, and grain width showed non-significant and positive relationships with days to maturity.Plant height showed critical and positive relationship with panicle length of main axis, 1000 grain weight, root volume, whereas it showed significant and negative correlation with no. of panicle per plant.Stem thickness showed non-significant and positive relationship with root volume, though it showed critical and negative connection with number of panicles per plant.Panicle length of main axis showed significant and positive relationship with length of leaf blade, while it showed significant and negative correlation with grain length and decorticated grain length.The 1000 grain weight showed non-significant and negative relationship with number of panicles per plant.