首页|玉米和狗尾草光周期敏感性的比较研究

玉米和狗尾草光周期敏感性的比较研究

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光周期是影响植物生长发育的关键因素之一.玉米和狗尾草都是短日照禾本科植物,且都具有光周期敏感性.对玉米和狗尾草的光周期敏感性比较研究,探索易于研究的狗尾草光周期敏感性机理,借以解析玉米光周期敏感性反应的机理.以玉米自交系CML288、黄早四和狗尾草自交系A10为材料,研究在长日照、短日照和在不同生育时期长短日照相互挪移处理下的光周期反应.结果表明,玉米和狗尾草在长日照条件下都表现出营养生长旺盛和生育期延迟,二者在长日照条件下的光周期敏感阶段都比短日照条件下的光周期敏感阶段长;玉米在进入光周期敏感期之前有一段时间的光周期钝感期,而狗尾草从发芽出苗就直接进入光周期敏感期.两个光周期敏感程度不同的玉米自交系比较,光周期敏感自交系CML288比光周期相对不敏感自交系黄早四的光周期敏感阶段长.
Comparative Study on the Photoperiod-Sensitive Between Maize and Setaria viridis
Photoperiod sensitivity of flowering time is an important consideration in plant cultivation and breeding. Maize and Setaria viridis are short-day grass plants, and they have close genetic relationship. With maize inbred lines CML288, Huangzao4 and Setaria viridis inbred line A10, we studied the photoperiod under short daylight and long daylight, and using reciprocal transfer between long-day(LD) and short-day conditions(SD). For resolving the mechanism of photoperiod-sensitive of maize, and in order to explore the mechanism of photoperiod-sensitive of S. Viridis, the comparison of photoperiod-sensitive between maize and S. Viridis were studied. The results showed that maize and Setaria viridis both had photoperiod-sensitive, vigorous vegetative growth and growth phase were lengthened. The stage of photoperiod-sensitive under long daylight was longer than short daylight. Maize had a photoperi-od-insensitive stage before photoperiod-sensitive. However, Setaria viridis directly produced photoperiod-sensitive from germination. The stage of photoperiod-sensitive in CML288 was longer than Huangzao4.

MaizeSetaria viridisPhotoperiodPhotoperiod-sensitive

谢丽莉、吴连成、库丽霞、吴刘记、张君、王新涛、陈彦惠

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河南农业大学农学院,郑州450002

玉米 狗尾草 光周期 光周期敏感性

国家重点基础研究发展规划(973计划)

2011CB111509

2012

玉米科学
吉林省农业科学院 国家玉米工程技术研究中心(吉林) 国家玉米改良中心 中国农业科技东北创新中心

玉米科学

CSTPCDCSCD北大核心
影响因子:1.163
ISSN:1005-0906
年,卷(期):2012.20(2)
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