Green Global
Foundation   Journal
...an emerging window for scientific research and publication across the globe

GRAIN GROWTH AND YIELD PERFORMANCE OF BORO RICE VARIETIES UNDER DIFFERENT SOIL MOISTURE REGIMES (Pages : 5 - 8)

A pot experiment was carried out with four Boro rice varieties to observe grain growth and yield performance under different soil moisture regimes. Moisture levels viz., 5 cm standing water, 100% field capacity (FC) and 80% FC were maintained during booting, flowering and tillering to maturity stages separately for yield performance. Moisture levels viz., 100, 80 and 30% FC were also maintained from panicle emergence to maturity for grain growth pattern. Plant height, tiller number, panicle number, panicle length, number of filled grains per panicle, 1000-grain weight, total dry matter, yield and harvest index were decreased with the less soil moisture. However, varietal responses were different due to different soil moisture regimes for most of the characters and they had different degree of reduction. Binadhan-5 produced highest yield, more tillers and panicles per plant, highest 1000-grain weight and TDM and medium HI under different soil moisture regimes. Binadhan-6 showed better yield but the highest TDM and medium HI. Iratom-24 showed medium yield, TDM and the shortest panicle. BRRI dhan29 showed the highest HI but it produced lower grain yield under different soil moisture regimes. Binadhan-5 and Binadhan-6 may be used for developing suitable varieties in breeding programme for different soil moisture regimes in Bangladesh.Download