欢迎访问《中国农学通报》，
中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (18): 15-19.doi: 10.11924/j.issn.1000-6850.casb15010048

所属专题： 水稻

• 农学 农业基础科学 • 上一篇    下一篇

杂交水稻‘协优385’主要产量构成因子与产量的相关分析和通径分析

李树杏1,向关伦1,杨占烈1,甘 雨1,郭 慧1,2   

  1. (1贵州省水稻研究所,贵阳 550006；2中南大学研究生院隆平分院杂交水稻国家重点实验室,长沙 410125）
  • 收稿日期:2015-01-08 修回日期:2015-06-08 接受日期:2015-03-25 出版日期:2015-07-27 发布日期:2015-07-27
  • 通讯作者: 郭慧.
  • 基金资助:
    贵州省农科院专项项目“高产杂交稻协优385大面积示范”（黔农科院院专项?2011?029号）；贵州省科技成果重点推广计划项目“高产杂交水稻协优385的示范推广”（黔科合成字?2012?5020号）；贵州省农业动植物育种项目“高产杂交水稻协优385试验示范”（黔农育专字?2013?012号）；贵州省农科院自主创新科研项目“水稻种质创新及高效育种与栽培技术体系研究”[黔农科科院自主创新科研专项字（2014）19号]；贵州省科技创新人才团队建设项目“贵州省水稻遗传育种研究创新团队”（黔科合人才团队?2012?4020号）。

Correlation and Path Analysis of Yield Components of Hybrid Rice Combinations ‘Xieyou 385’

Li Shuxing1, Xiang Guanlun1, Yang Zhanlie1, Gan Yu1, Guo Hui1,2   

  1. (1Guizhou Rice Research Institute, Guiyang 550006; 2State Key Laboratory of Hybrid Rice, Longping Branch, Graduate School of Central South University, Changsha 410125)
  • Received:2015-01-08 Revised:2015-06-08 Accepted:2015-03-25 Online:2015-07-27 Published:2015-07-27

PDF (PC)

505

摘要： 为了进一步探究高产杂交水稻新品种‘协优385’的高产潜力和高产途径，利用相关区域试验和生产试验资料，对高产品种‘协优385’全生育期、株高、有效穗、穗长、穗粒数、实粒数、结实率、千粒重、产量等性状进行了相关性分析和通径分析。相关性分析结果表明：与杂交水稻新品种‘协优385’产量相关性最大的因子是实粒数，r=0.53达到了显著水平；另外，穗粒数与实粒数相关系数r=0.77达到极显著水平。通径分析表明：有效穗和实粒数对产量的直接作用较大。因此，在新品种‘协优385’推广应用以及高产创建时要做到氮肥适当后移，倒三叶时增施粒肥，注重灌浆期水肥管理，以提高结实率进而增加穗粒数为实现高产奠定基础。

关键词: 松乳菇, 松乳菇, 碳源, 氮源, pH, 栽培种配方

Abstract: In order to ascertain the ways for achieving high yield and investigate the yield potential of a new hybrid rice variety Rice ‘Xieyou 385’, the whole growth period, plant height, effective spike, spike length and spike grain number, grain numbers per spike, setting rate, and yield traits were analyzed by using the data of regional tests and production tests of rice in Guizhou. The correlation analysis results showed that the largest factor correlated with yield is the solid grain number, r= 0.53 reached the significant level; the real correlation coefficient of the spike grain number and grain number was r= 0.77, reaching extremely significant level. The path analysis results showed that the effective ear and grain number had greater direct effect on the production. In conclusion, in order to improve the rate of ear grain number and achieve high yield, we need to postpone the application of nitrogen properly, to increase grain fertilizer at three-leaf stage and pay attention to sludge management at filling stage.