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审定编号:国审稻2016 012品种名称:龙优450申请者:四川西科种业股份有限公司育种者:四川西科种业股份有限公司品种来源:龙香4A×天龙恢1 250特征特性:籼型三系杂交水稻品种。在长江上游作一季中稻种植,全生育期156.5 d,比对照Ⅱ优838长0.9 d。株高120.2 cm,穗长26.5 cm,每667m2有效穗数13.8万穗,每穗总粒数202.4粒,结实率74.1%,千粒重32.3 g。抗性:稻瘟病综合指数两年分别为3.8、4.2,穗瘟损失率最高级7级;褐飞虱9级;感稻瘟病,高感褐飞虱。米质主要指标:整精米率
Validation No .: Guozhiantao 2016 012 Product Name: Longyou 450 Applicant: Sichuan Xike Seed Industry Co., Ltd. Breeder: Sichuan Xike Seed Industry Co., Ltd. Source: Longxiang 4A × Tianlong Recapture 1 250 Features: Indica three-line hybrid rice varieties. In the upper reaches of the Yangtze River to make a season of mid-season rice planting, the whole growth period 156.5 d, compared with the control Ⅱ You 838 long 0.9 d. Plant height 120.2 cm, spike length 26.5 cm, effective panicle per 667m2 138,000 spikelets per panicle 202.4, seed setting rate 74.1%, 1000 grain weight 32.3 g. Resistance: rice blast comprehensive index two years were 3.8,4.2, the highest loss rate of panicle blast 7; brown planthopper 9; sense of blast, highly susceptible to brown planthopper. The main indicators of quality rice: whole meter rate