Characterization of backcross introgression lines derived from Oryza nivara accessions for photosynthesis and yield.

ABSTRACT: Improvement of photosynthetic traits is a promising strategy to break the yield potential barrier of major food crops. Leaf photosynthetic traits were evaluated in a set of high yielding Oryza sativa, cv. Swarna × Oryza nivara backcross introgression lines (BILs) along with recurrent parent Swarna, both in wet (Kharif) and dry (Rabi) seasons in normal irrigated field conditions. Net photosynthesis (P _N) ranged from 15.37 to 23.25 µmol (CO₂) m^-2 s^-1 in the BILs. Significant difference in P _N was observed across the seasons and genotypes. Six BILs showed high photosynthesis compared with recurrent parent in both seasons. Chlorophyll content showed minimum variation across the seasons for any specific BIL but s

SUBMITTER: Rao YV 

PROVIDER: S-EPMC6214435 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature