河南农业科学 ›› 2019, Vol. 48 ›› Issue (10): 47-53.DOI: 10.15933/j.cnki.1004-3268.2019.10.008

• 作物栽培·遗传育种 • 上一篇    下一篇

玉米成熟期抗旱性综合评价

袁闯1,朱林2,3,许兴1,2,王开元4   

  1. (1.宁夏大学 农学院,宁夏 银川 750021; 2.宁夏大学 西北退化生态系统恢复与重建教育部重点实验室,宁夏 银川 750021; 3.宁夏大学 西北土地退化与生态恢复省部共建国家重点实验室培育基地,宁夏 银川 750021;4.宁夏科河种业有限公司,宁夏 银川 750000)
  • 收稿日期:2019-04-15 出版日期:2019-10-15 发布日期:2019-10-15
  • 通讯作者: 许 兴(1959-),男,宁夏银川人,教授,主要从事作物栽培和作物生态生理研究。E-mail:xuxingscience@126.com
  • 作者简介:袁 闯(1992-),男,陕西咸阳人, 在读硕士研究生,研究方向:作物生理生态。E-mail:954532666@qq.com
  • 基金资助:
    宁夏回族自治区牧草育种专项(2014NYYZ040101);国家自然科学基金项目(31860135);宁夏回族自治区教育厅2018年高等学校科学研究项目(NGY2018024)

Comprehensive Evaluation on Drought Resistance of Maize at Maturity

 YUAN Chuang1,ZHU Lin2,3,XU Xing1,2,WANG Kaiyuan4   

  1.  ( 1.College of Agronomy,Ningxia University,Yinchuan 750021,China; 2. Ministry of Education Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwest,Ningxia University,Yinchuan 750021,China; 3.State Key Laboratory Breeding Base of Land Degradation and Ecological Restoration of Northwest China, Ningxia University,Yinchuan 750021,China; 4.Ningxia Kehe Seeds Industry Co.,Ltd.,Yinchuan 750000,China)
  • Received:2019-04-15 Published:2019-10-15 Online:2019-10-15

摘要: 为筛选抗旱玉米品种,以15份玉米品种为试验材料,在重度干旱胁迫和正常灌水条件下测量成熟期株高、茎粗、穗长、穗质量、穗行数、行粒数、穗粗、轴粗、突尖长、百粒质量、籽粒产量,运用相关分析、主成分分析、隶属函数值、聚类分析等方法,对不同玉米品种成熟期抗旱性进行综合评价。结果表明,重度干旱胁迫对玉米株高、茎粗、穗长、穗粒数、穗质量、百粒质量等各项指标均产生极显著影响;相关性分析表明,11项指标之间存在一定相关性;主成分分析表明,5个主成分可代替玉米抗旱性87.27%的原始信息;根据抗旱能力综合评价值(D)进行聚类分析,可将供试玉米品种分为4类:第Ⅰ类为高度抗旱型,包括佰青161和中原单32;第Ⅱ类为抗旱型,包括桂青贮、A18/H237和北16/5996;第Ⅲ类为中度抗旱型,包括C5/A18、佰青131、5178/1519、J112/1528、6522/1522、H14/599-2和H237/1506;第Ⅳ类为敏感型,包括佰青178、J152/1506和A3/A28。

关键词: 玉米;成熟期;抗旱性;主成分分析, 隶属函数

Abstract:  In order to identify drought-resistant maize varieties,fifteen maize genotypes were adopted as experimental materials and were planted in severe drought and well-watered conditions.The plant height,stem diameter,ear length,ear weight,numbers of ear rows and grains per row,diameters of ear and axis,bald tip length,100-grain weight,and grain yield were measured under the two contrasted treatments at mature stage.The drought resistance of different maize varieties at maturity was evaluated by a series of methods,including correlation analysis,principal component analysis,membership function,cluster analysis and other methods.The results showed that severe drought stress exerted significant effect on plant height,stem diameter,ear length,kernel number,ear weight and 100-grain weight.Generally,there were significant correlations among 11 indexes in this study.Principal component analysis showed that 5 principal components could represent 87.27% of the original information of maize resistance.According to the comprehensive evaluation value of drought resistance(D),the tested maize materials could be divided into 4 drought resistant classes.ClassⅠ was highly drought-resistant type,including Baiqing 161andZhongyuandan32.ClassⅡwasdrought-resistant type,includingGuiqingzhu,A18/H237andNorth 16/5996.ClassⅢwasmoderate drought-resistant type,including C5/A18,Baiqing 131,5178/1519,J112/1528,6522/1522,H14/599-2 andH237/1506.ClassⅣwas drought susceptible type,including Baiqing178,J152/1506,andA3/A28.

Key words: Maize, Matureperiod, Drought resistance, Principalcomponentanalysis, Membershipfunc tion

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