Local adaptability tests of promising inbred under Isabela [Philippines] condition
2018
Pasicolan, H.R. | Gawat, N.R.
The province of Isabela is one of the major rice granaries in the Philippines. The physical area for irrigated rice land is 161,723 hectares (PAS2015). Average yield in Isabela is 4.46 t/ha (PAS 2014) which is slightly greater than the national average of 4.28 t/ha (PhilRice Statistics 2002). Farmers in Isabela grow several varieties of inbred rice every season. Hence, there is a need to continuously evaluate promising inbreds in order to come up with a location specific varietal recommendation. The trial was established under direct seeded and transplanted rice culture at PhilRice-Isabela during the 2017 dry and wet seasons following the randomized complete block design with three replications. Promising entries were evaluated in terms of yield potential, agronomic characteristics and resistance to insect pests and diseases. During the dry season of the direct seeded rice culture, HHZ3-SAL13-YL1-SAL1 (99264.33 kg/ha) significantly out yielded all the test entries While during WS, C9386-B-7-2-3 (7653.52) kg/ha, obtained the highest yielder. This entry garnered a yield advantage of 5.69% over the best check NSIC Rc222 (7240.84 kg/ha). During the dry season of the transplanted rice culture, HHZ3-SAL13-YL1-SAL1 (9,096.66 kg/ha) significantly out yielded all the test entries followed by IR10A323 (8751.39 kg/ha) and IR09N538 (8575.50 kg/ha). While during the wet season IR09A136 (7931.21 kg/ha) out yielded all the test entries. HHZ3-SAL13-YL1-SAL1, performed well during dry season for both direct seeded and transplanted rice culture. While during wet season IR09A136 performed well both DSR and TPR, and C9386-B-7-2-3 for DSR wet season in San Mateo, Isabela. These data will be used to supplement NCT evaluation for possible release of these promising inbred lines.
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