Heat stress at reproductive stage disrupts leaf carbohydrate metabolism, impairs reproductive function, and severely reduces seed yield in lentil
A study was conducted to evaluate the effects of high temperatures during reproductive growth on performance of lentil and to probe the mechanisms associated with reproductive failures. Three lentil genotypes were grown in pots at two sowing dates. The plants were fully irrigated during both the sowing situations. In late-sown plants, the phenology was accelerated, leading to substantial reduction in biomass, flowers, and pods, accompanied by marked shortening of flowering period and podding duration, causing decreased seed yield. At the peak flowering stage the leaves of the late-sown plants had significantly lower relative leaf water content and lower stomatal conductance than normal sowing time plants at the same stage, indicating that the late sowing induced both water stress and heat stress.