安徽省一季中籼稻分蘖期耐淹能力评价  

Evaluation of the Submergence Tolerance of Medium Indica Rice at Tillering Stage in Anhui

作　　者：夏加发[1,2] 李泽福 马廷臣[3] 王元垒 

机构地区：[1]安徽省农业科学院水稻研究所,安徽合肥230031 [2]国家水稻改良合肥分中心,安徽合肥230031 [3]安徽省水稻遗传重点开放实验室,安徽合肥230031

出　　处：《安徽农业科学》2011年第36期22277-22279,22282,共4页Journal of Anhui Agricultural Sciences

基　　金：国家科技支撑计划项目(2009BADA6B01)

摘　　要：[目的]对安徽一季中籼稻的耐淹能力进行评价。[方法]以安徽省生产上推广的21个中籼稻品种为材料,在分蘖期采用人工灌没顶深水进行淹涝胁迫7 d,根据产量损失的大小评价其耐淹涝能力。[结果]根据产量损失率,将水稻品种的分蘖期耐淹能力分为3类:耐淹品种的产量损失率小于20%,中性品种的产量损失率在20%～35%,敏感品种的产量损失率大于35%。耐淹品种受淹涝胁迫后的有效穗数、每穗总粒数和结实率的下降幅度明显低于敏感品种。[结论]筛选出协优335、丰两优香1号、徽两优6号和II优0128等一批耐淹涝品种。[ Objective ] To evaluate the submergence tolerance of medium indica rice at tillerii3g stage in Auhui. [ Method] With 21 varieties of medium indica rice that were popularized in production in Anhui Province as the tested materials, they were submerged by artificial irrigation for 8 d at tillering stage, the submergence tolerance in those rice varieties was evaluated according to their rate of yield loss. [ Result] The submergence tolerance of the rice varieties at tillering stage was divided into 3 classes according to their rate of yield loss. The rate of yield loss of submergence-tolerant varieties was 〈 20% , the rate of yield loss of moderate submergence-tolerant varieties was from 20% to 35%, the rate of yield loss of submergence-sensitive varieties was 〉 35%. The decrease rates in the effective panicles per plant, total grains per panicle and seed-setting rate of submergence-tolerant varieties were obviously lower than that of the sensitive varieties. [ Conclusion] A group of submer- gence-tolerant varieties of medium indica rice such as Xieyou 335, Fengliangyouxiang 1, Huiliangyou 6 and II you 0128 were screened out ac- cording to the evaluation of the submergence tolerance in the rice.

关 键 词：一季中灿稻 耐淹能力 评价 安徽省 

分 类 号：S511.22[农业科学—作物学]