The effect of low light intensity (40 to 50% of natural light) at different growth stages and subsequent exposure to natural light was assessed on growth and productivity in 2 genotypes during khari] and 3 during rabi under 2 N levels. The dry matter accumulation was affected under shading at all stages, which was critical from primordial initiation (PI) onwards. The expression of panicle number appears to be a function of the environment particularly the light intensity within 26 to 39°C range of mean maximum temperatures. The grains/panicle were also reduced by shading from PI onwards. The yields were progressively reduced with low light intensity appearing in succession at different growth stages, particularly more critical during ripening phase. It was considered that low light intensity during monsoon season was an important constraint for higher productivity since yields as low as 3.2 to 4.4 tons/ha were recorded with varieties which yielded 8 to 10 tons/ha under high light intensity conditions as in rabi.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.