ข้าวเจ้าสายพันธุ์ PSL95120-28-5-R-R

Abstract

Rainfed rice growing farmers in the Lower North of Thailand still use low yield variety causing low production. The Rainfed Lowland Rice Research and Development Project in the Lower North under the responsibility of Phitsanulok Rice Research Center has continuously worked on this problem. Recently, a promising line PSL95120-28-5-R-R from three-way cross between RD21/IR68//PSL86022-77-2-2-1-2 was obtained. This line can produce yield of 696 kg/rai (4.35 t/ha) in which around 20 percent higher than those of KDML105 which produced only 580 kg/rai (3.63 t/ha). It performed high yield stability over various conditions in the Lower north and Central region. It responded 4-16 kg N/rai (25-100 kg N/ha) nitrogen fertilization. It is a non-glutinous, photoperiod sensitive, early maturity with the harvesting date around the middle of November. It has an erect and strong culm with 129 centimeters high resulting in resistant to lodging. It also has erect flag leaf, well exerted, medium to compact panicle. The brown rice has a slender shape with 7.87 millimeters long, good grain physical quality with low chalkiness and excellent milling quality. Chemical properties of grain were low amylose, low gel consistency and low gel temperature resulting in soft cooked rice. It is susceptible to brown planthopper in some areas, moderately susceptible to bacterial blight and rice gall midge.