优质早熟超级稻品种龙粳18的选育

Breeding of Quality and New Early Matured Super Rice Variety Longjing No.18

优异种质的收集、鉴定、利用是选育多优集成新品种的关键。采用有性杂交和系统育种技术路线培育的优质、抗病、耐冷超级稻新品种龙粳18,其主要品质指标达到国家一级优质粳米标准;两年区试平均产量8168.8 kg.hm-2,比对照增产9.1%,其中最高点达到9119.0 kg.hm-2,生试平均产量7995.1 kg.hm-2,比对照增产10.7%;经省种子管理局指定单位鉴定,中抗稻瘟病;耐寒性较强。

The collection, determination and application of high quality germplasm are the key points of multi high quality integration. The high quality, high yield, blast and cold resistant variety Longjing No. 18 developed through cross and systematic breeding. Its major quality index reached national first grade. The average yield of regional test was 8 168. 8 kg · hm^-2 , which was 9.1% higher than that of CK. The highest yield of regional test was 9 119.0 kg · hm^-2. The average yield of production test was 7 995.1 kg ·hm^-2, which was 10.7% higher than that of CK. By inoculation and natural infection, the blast resistance of the variety reached more than middle grade level. The cold resistance of the variety was strong by provincial authority determination.