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

WATER DEFICIT CONDITION INFLUENCES THE MORPHO-PHYSIOLOGY, DRY MATTER PARTITIONING AND YIELD ATTRIBUTES OF AFRICAN RICE CULTIVARS (cv. NERICA) (Pages : 1 - 8)

Drought is one of the notable environmental stresses that severely limit the growth and productivity of rice by hampering the physiological processes and reducing dry matter production. The involvement of drought-tolerant rice cultivars would compensate for the greater amount of yield loss. In this study, the performance of two African rice cultivars (NERICA1 and NERICA10) and one Bangladeshi cultivar (BRRI dhan28) were evaluated under various moisture levels (100%, 80%, 60% and 40% FC). The gradual decrease in water content reduced the growth, dry matter and yield traits among the cultivars. The individual effect of cultivars and moisture levels significantly affected the root and shoot length, stem dry matter, transpiration rate and 1000-grain weight whereas, the combined effect of cultivars and drought stresses showed a significant effect on root dry weight, panicle dry weight, total dry weight, photosynthesis rate, effective tiller no., panicle no., no. of filled grain and grain yield. The drought-tolerant NERICA cultivars showed better performance in almost all studied traits than the Bangladeshi rice variety. Our results conclude that the drought-tolerant NERICA cultivars could offer valuable genetic tools for further improvement of rice productivity in drought-prone regions of Bangladesh during this time of erratic climate change.Download