Light is a major constraint for the rice production. Twenty five rice genotypes was exposed to normal light and low light to study some growth parameters. The statistical analysis showed significant difference between the normal light and low light condition. Under low light condition the growth parameters specific leaf weight (SLW), Relative growth rate (RGR), net assimilation rate (NAR), crop growth rate (CGR) were decreased whereas specific leaf area (SLA), leaf area ratio (LAR), leaf area index (LAI) were increased. | Nội dung Text Effects of low light stress on growth parameters of rice Oryza sativa L. genotypes