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中国农学通报 ›› 2025, Vol. 41 ›› Issue (1): 8-12.doi: 10.11924/j.issn.1000-6850.casb2024-0143

• 农学·农业基础科学 • 上一篇    下一篇

玉米植株性状的分离特征研究

史庆玲1(), 张静雯2, 张鑫悦2, 霍冰2, 董永彬2()   

  1. 1 河南省种业发展中心,郑州 450016
    2 河南农业大学农学院,郑州 450046
  • 收稿日期:2024-02-29 修回日期:2024-06-15 出版日期:2025-01-05 发布日期:2025-01-01
  • 通讯作者:
    董永彬,男,1978年出生,河南商丘人,副教授,博士,从事玉米遗传育种研究。通信地址:450046 河南省郑州市郑东新区平安大道218号,Tel:0371-56799821,E-mail:
  • 作者简介:

    史庆玲,女,1982年出生,山西太谷人,高级农艺师,博士,从事农作物品种试验推广工作。通信地址:450016 河南省郑州市郑东新区商都路26号 河南省种业发展中心,Tel:0371-65569787,E-mail:

  • 基金资助:
    河南省重大公益专项“机收玉米新品种选育及配套生产技术研究”(201300111100); 河南省自然科学基金“玉米粒重主效位点qGW1.05候选基因的功能鉴定”(212300410356)

Separation Characteristics of Maize Plant Traits

SHI Qingling1(), ZHANG Jingwen2, ZHANG Xinyue2, HUO Bing2, DONG Yongbin2()   

  1. 1 Henan Province Seed Industry Development Center, Zhengzhou 450016
    2 College of Agronomy, Henan Agricultural University, Zhengzhou 450046
  • Received:2024-02-29 Revised:2024-06-15 Published:2025-01-05 Online:2025-01-01

摘要:

为研究玉米植株性状的分离特征,选取10个不同来源的玉米自交系进行杂交组配,获得A、B 2个8亲本杂交F1分离群体,对分离群体的5个植株性状进行表型鉴定,并进行植株性状间的相关分析和通径分析。结果表明,2个分离群体各植株性状中株高的变异程度较大,变异系数为10.34%、10.54%;相关分析表明,2个分离群体的株高与穗位高、雄穗长、穗上节间均长均呈极显著正相关,雄穗长与穗上叶节间均长均呈极显著正相关,但2个群体的其他植株性状间相关性表现不完全一致。通径分析表明,穗位高、穗上叶片数、穗上叶节间均长对株高具有较大正向直接效应,雄穗长通过穗上节间均长对株高产生较大正向间接作用。本研究分析了玉米植株性状间相互关系,可为玉米植株性状的遗传改良提供参考。

关键词: 玉米, 植株性状, 分离群体, 杂交组配, 表型鉴定, 相关分析, 通径分析

Abstract:

In order to study the separation characteristics of plant traits in maize, ten maize inbred lines from different sources were selected for cross-mating, and two 8-parent hybrid F1 segregated populations A and B were obtained. The phenotype of five plant traits of the segregated populations was identified, and the correlation analysis and path analysis between plant traits were carried out. The results showed that the variation coefficient of plant height in two segregating populations was large, and the coefficient of variation was 10.34% and 10.54%. Correlation analysis showed that the plant height showed extremely significant positive correlation with ear height, tassel length and average length of internode above ear, and tassel length showed extremely significant positive correlation with average length of internode above ear in two segregated populations. But the correlation between other plant traits of the two populations was not completely consistent. The path analysis showed that the ear height, tassel length and average length of internode above ear had significant positive direct effect on plant height. The tassel length had a large positive indirect effect on plant height through the average length of internode above ear. This study analyzed the relationship between plant traits, which could provide reference for genetic improvement of plant traits in maize.

Key words: maize, plant traits, segregating population, cross-mating, phenotype, correlation analysis, path analysis