ข้าวเหนียวสายพันธุ์ดีสาหรับนาชลประทานภาคเหนือตอนบน

Abstract

Two season crops per year as growing rice in both wet and dry season can be found in some parts of an irrigated area in the upper northern region. Glutinous rice varieties are still preferable for farmers due to high yield and cultural consumption Rice Research Centers. in this region have conducted the research and development on rice varietals improvement continuously to gain the desirable new varieties. The results showed 2 new promising glutinous rice lines, PRE96016-SPT-25-2-2-1-1 and PRE98002-PAN-B-1-3-3 from crossing of IET 12011/SML and KKNLR75051-PMI-68-1/PHRAE 1 for each lines respectively. Both lines showed the potential of the highest yield of 948 and 934 kilograms per rai respectively. Characterizations of seeds and plant type were long and slender grain with straw hull color and moderately good in milling quality. The percentage of broken rice and head rice were 32.0-56.8% and 31.3-53.3%, respectively. The alkali test values grain in 1.7% KOH are 6.6 and 6.2 respectively. They were resistant to blast disease and moderately resistant to bacterial leaf blight disease but susceptible to gall midge and white backed planthopper.