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Y两优2号审定编号:国审稻2013027选育单位:湖南杂交水稻研究中心品种来源:Y58S×远恢2号特征特性:籼型两系杂交水稻品种。在长江中下游作一季中稻种植,全生育期平均139.1 d,比对照丰两优4号长2.2 d。株高为122.6 cm,穗长28.3 cm,每667 m2有效穗数17.1万穗,每穗总粒数198.5粒,结实率78.9%,千粒重24.8 g。抗性:稻瘟病综合指数5.5级,穗瘟损失率最高级9级;白叶枯病7级;褐飞虱9级;高感稻瘟病、褐飞虱,感
Y Liangyou 2 Validation No .: Guo Zaojiang 2013027 Breeding Unit: Hunan Hybrid Rice Research Center Source: Y58S × Yuanhui 2 Characteristics: Two-line indica hybrid rice. In the middle and lower reaches of the Yangtze River for a season of mid-season rice planting, the whole growth period averaged 139.1 d, 2.2 d longer than the control Fengliangyou 4. The plant height was 122.6 cm and the spike length was 28.3 cm. The number of effective spikes per 667 m2 was 171,000 spikes, and the number of total grains per spike was 198.5, the seed setting rate was 78.9%, and the grain weight was 24.8 g. Resistance: Magnaporthe grisea index 5.5, panicle blast loss rate of the highest 9; Bacterial blight 7; brown planthopper 9; highly susceptible to rice blast, brown planthopper, flu