Association studies in F2 population for yield and quality traits in rice (Oryza sativa L.)

Abstract

The experiment was carried out to explore correlation and path coefficient analysis in two F2 populations of rice derived from the cross AD 16019 x ADT43 and AD16019 x WGL 14377 at TRRI, Aduthurai during 2016-18. In both the crosses single plant yield shows positive association with 1000 grain weight, plant height, number of productive tillers, panicle length. In the cross AD 16019 x ADT43 1000 grain weight and number of productive tillers per plant showed high direct positive effect on single plant yield and in the cross AD16019 x WGL 14377 only 1000 grain weight had high positive direct effect on single plant yield. Hence, selection of positively associated characters could bring improvement in yield and component characters.

Keywords

• correlation
• path analysis
• 1000 grain weight.