安徽省杂交中稻主导品种丰产性及耐高温特性研究

针对安徽省易旱、易涝、易遇高温热害,生产上使用品种数量过多,主导品种不够明确的瓶颈问题,将安徽省近年审定的在区试中增产幅度较大且推广面积较大的品种同步进行丰产性和耐高温特性研究.丰产性试验表明:在正常温度条件下,两优6326等中籼和天协1号等中粳组合都表现了较好的丰产性.耐高温试验结果表明:在减数分蘖期和抽穗期扬花期遇到连续35 ℃以上的高温时,绿优1号、两优6326、皖稻153和Ⅱ优838等表现较好耐高温特性,在高温发生年份具有较强的抗性,而天协1号则对高温特别敏感,生产上应该注意.

Research on High Yield and High-temperature Tolerance of Dominant Hybrid Mid-rice Varieties in Anhui Province

Characteristics of high-temperature tolerance and good yield rice varieties were studied in this paper due to the drought,flooding and high temperature areas in Anhui Province.Research results of high yield indicated that Indica rice including Liangyou 6326 as well as Japonica rice such as Tianxie No.1 had higher yield under the normal temperature condition.Results of high-temperature tolerance test showed that Luyou No.1,Liangyou 6326,Wandao153 and ⅡYou 838 had higher temperature tolerance during continuous 35 ℃ in meiosis stage and flowering stage and showed stronger resistance in high temperature years.However,Tianxie No.1 was particularly sensitive to high temperature,which should be paid attention to during production.