Yield Stability Potential of Ipb 9g and Ipb 3s Varieties in Paddy and Dry Systems

Limited water availability due to climate change significantly challenges the increase in rice production. One effective way to address this issue is by selecting rice varieties that thrive under well-watered and water-scarce conditions. This study aimed to determine the morphophysiological responses and yield of rice varieties in paddy and dry cultivation systems. The experiment involved cultivating rice using two different systems: paddy and dry systems. A one-factor randomized complete block design was employed, with three replications. Lowland and upland rice varieties (IPB 3S and IPB 9G) were used. These varieties were planted in both paddy fields and dryland. IPB 3S and IPB 9G had different responses to the conditions of the paddy field and dry systems. The dry system decreased morphological, physiological, and crop yield characteristics compared to the paddy field system. IPB 3S had a higher photosynthesis rate, and IPB 9G had a higher crop yield. IPB 3S and IPB 9G were moderately drought-tolerant varieties, with drought sensitivity index values of 0.69 and 0.71, respectively. They also demonstrated yield stability, with values of 0.67 for IPB 3S and 0.68 for IPB 9G. Overall, IPB 3S and IPB 9G have the potential to produce high and stable yields in both paddy and dry systems.