水稻不同节位和数量分蘖对抽穗期的影响  

Effects of Different Tillering Position and Number on Heading Date in Rice

作　　者：隗溟[1] 廖学群[1] 朱自均[1] 

机构地区：[1]西南农业大学农学及生命科学学院,重庆北碚400716

出　　处：《杂交水稻》2005年第6期61-63,共3页Hybrid Rice

基　　金：重庆市科委资助应用基础研究项目(2003-7916)

摘　　要：以汕优63为材料,研究了在盆钵栽培条件下人工去蘖形成不同节位、不同数量分蘖的处理对抽穗期的影响。结果表明,随着保留的分蘖数量减少,抽穗期逐渐延迟;分蘖早发(低节位分蘖多、高节位空位)的处理比分蘖迟发(低节位空位、高节位分蘖多)的处理抽穗期明显提早;分蘖迟发能促进高节位分蘖的发生,而分蘖早发则相反。因此,水稻分蘖不仅具有数量调节作用,还有空间及时间调节作用。The effects of different tillering position and number on heading date of the hybrid rice Shanyou 63 were studied under the condition of potted artificially controlled by the removal of tillers on specific nodes. The results showed that with the number of retained tillers decreased, the heading date delayed gradually. The heading date of the treated plants with more tillers in low tillering nodes but vacant in high ones （early tillering） was earlier than those with more tillers in high tillering nodes but vacant in low ones （late tillering）, i.e., late tillering enhanced the emergence of high nodal positions of tillers while early tillering restrained the emergence of high nodal positions of tillers, which indicates that rice has the function to regulate tillering not only on the quantity, but on the space and time.

关 键 词：水稻 分蘖节位 分蘖数量 抽穗期 

分 类 号：S511.01[农业科学—作物学] Q945[生物学—植物学]