耐寒杂交稻K优267亲本在贵州中高海拔地区的制种特性  

Seed Production Characteristics of K-you 267, a New Combination of Hybrid Rice with Cold Tolerance in the Higher Elevation Areas of Guizhou

作　　者：陈惠查[1] 金桃叶[1] 游俊梅[1] 吴宗桃[1] 严宗卜[1] 

机构地区：[1]贵州省农业科学院水稻研究所,贵阳550006

出　　处：《贵州农业科学》2005年第3期19-21,共3页Guizhou Agricultural Sciences

基　　金：贵州省农业科技攻关项目资助[黔科合农社字(20021106)];贵州省"十五"科技攻关项目[黔科合农社字(2001115516)和(2001110517)]

摘　　要：2003年在中高海拔地区的贵阳(1140m),对三系耐寒杂交稻K优267及其亲本的制种特性与技术进行了研究。父本黔恢267于3月31日播种,母本K17A于5月23日、28日和6月2日分3期播种。试验结果表明,父本于8月9～15日抽穗,5月28日播种的母本,于8月9～14日抽穗,花期与父本相遇较好,制种产量达217.1kg/667m2;父、母本叶差为7.6左右。父本主茎18叶,母本不同播期下的主茎叶数为12～14叶。讨论了抗寒组合K优267在高海拔地区制种的可行性和特点。The experiment of seed production of K-you 267, a new combination of hybrid rice with cold tolerance, was conducted in Guiyang at an altitude of 1140 meters, in 2003. The restorer line Qianhui 267, male parent, was sown on March 31 while the cytoplasm male sterile (CMS) line K17 A, female parent, was sown on May 23, May 28 and June 2, separately. The results showed that the male parent Qianyou 267 headed from August 9 to 15. The best heading stage for the female parent, which completely met the heading stage of male parent, was the third sowning date of May 28. The yield of this female sowing date was 217.1kg/667m^2 when the restorer line Qianhui 267 reached the stage about 7.6 leaves. There were totally 18 leaves for the restorer line Qianhui 267 while the number of leaves was 12 for CMS line K17 A in different sowing stages. The feasibility was discussed for the seed production of K-you 267 in the higher elevation areas of Guizhou province.

关 键 词：高海拔地区 制种特性 杂交稻 亲本 耐寒 贵州 2003年 K17A 试验结果 制种产量 主茎叶数 父本 母本 播种 抽穗 三系 花期 播期 抗寒 

分 类 号：S511.203.5[农业科学—作物学] S511