Adaptability Trial of Hybrid and Inbred Rice Varieties under Corona Clayloam Condition

Abstract

This study was done in one of the ricefields of Sorsogon State College Castilla Campus at Mayon, Castilla, and Sorsogon to determine the best rice varieties adaptable in a location specific lowland ricefield specifically under Corona clay loam condition. This experiment also evaluated and characterized the agronomic or morphologic traits of rice cultivars in farmers’ field and identified the most productive and promising rice cultivars. Results of morphologic characteristics of the five varieties tested showed that for plant height NSIC Rc 222 was the tallest for wet season (WS) and NSIC Rc 212 and NSIC Rc 214 for dry season (DS). PhB71 performed just as well as NSIC Rc 214. Same variety got the highest productive tillers in both seasons and differed significantly over the four inbred varieties. NSIC Rc 222 exhibited the highest number of filled grains per panicle. This is significantly different from the other varieties. Only NSIC RC 214 gave a significantly higher weight for 1,000 grains per replication than the other varieties for both seasons. PhB 71 had the highest yield performance during the wet season and is significantly different with the other inbred varieties. It is concluded that the hybrid (PhB 71) and the inbred rice variety NSIC Rc214 were adaptable under corona clayloam condition in both seasons. Among the inbred rice varietiestested, NSIC Rc214 was found to be the most productive and promising variety in terms of yield. The hybrid variety (PhB71) is more productive than any of the inbred varieties under this present study. Keywords - hybrid rice varieties, inbred rice, corona clayloan