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  • 李海明,刘绍东,张思平,等.陆地棉种质资源花铃期抗旱性鉴定及抗旱指标筛选[J].植物遗传资源学报,2019,20(3):583-597.    [点击复制]
  • Li hai-ming,Liu shao-dong,Zhang si-ping,et al.Identification and Indices Screening of Drought Tolerance at Flowering?and?Boll?Setting?Stage in Upland Cotton Germplasm Resources[J].植物遗传资源学报,2019,20(3):583-597.   [点击复制]
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陆地棉种质资源花铃期抗旱性鉴定及抗旱指标筛选
李海明1,2, 刘绍东2, 张思平2, 李阳2, 陈静2, 马慧娟2, 沈倩2, 赵新华2, 李存东1, 庞朝友2
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(1棉花生物学国家重点实验室河北基地/河北农业大学,河北 保定 071001;2中国农业科学院棉花研究所,河南 安阳 455000)
摘要:
大田试验设置正常灌水和干旱胁迫处理,于花铃期开始干旱处理,以株高,果枝数等12个农艺性状的平均数为基础,采用综合抗旱系数,模糊隶属函数,主成分分析,关联分析和聚类分析等统计分析方法相结合进行品种抗旱性鉴定和抗旱指标的筛选,为棉花抗旱品种鉴定和棉花生产提供理论依据。12个农艺性状对水分胁迫的敏感程度各异,基于D值、CDC值和WDC值的棉花种质抗旱性分析;通过D值的聚类分析结果,将153份种质资源分为5级,Ⅰ级(强抗旱型)5份、Ⅱ级(抗旱型)35份、Ⅲ级(中抗旱型)57份、Ⅳ级(较敏感型)56份和Ⅴ级(敏感型)1份。供试棉花种质的籽棉产量与D值、CDC值和WDC值均呈极显著正相关。筛选出花铃期抗旱性强的棉花种质有以色列1101,抗旱性弱的品种盐早2号。株高、籽棉产量、单铃重、有效铃数和果枝始节高度可作为棉花种质资源花铃期抗旱性评价的指标。
关键词:  陆地棉  花铃期  抗旱性  品种筛选  农艺性状
DOI:10.13430/j.cnki.jpgr.20181008003
投稿时间:2018-10-08修订日期:2019-03-30
基金项目:公益性行业(农业)科研专项(201503117)
Identification and Indices Screening of Drought Tolerance at Flowering?and?Boll?Setting?Stage in Upland Cotton Germplasm Resources
Li hai-ming1,2, Liu shao-dong2, Zhang si-ping2, Li yang2, Chen jing2, Ma hui-juan2, Shen qian2, Zhao xin-hua2, Li cun-dong1, Pang chao-you2
(1 Hebei Base of State Key Laboratory of Cotton Biology/Hebei Agricultural University, Hebei Baoding 071001;2 Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Henan Anyang 455000)
Abstract:
By identifying the ability of drought resistance and screening indices at flowering and boll setting stage of upland cotton(Gossypium hirsutum L.), this study aimed to provide the materials and a theoretical basis for drought-resistant breeding and cultivation. 153 varieties (lines) were planted under normal irrigation and drought stress conditions, while the drought treatment was conducted by using reduced water at flowering and boll setting stage. Several agronomical traits, including means of plant height, lint percentage, single boll weight, the first node of fruit branch, initial internodes of fruiting branch, effective boll number, fruit branch number, cotton seed yield, fiber length (mm), specific breaking length, uniformity and micronaire, were measured. The statistical analysis was conducted by combination with the comprehensive drought coefficient, membership function, principal component analysis, association analysis and clustering analysis. The agronomic traits of upland cotton varieties (lines) represented large variation upon drought stress treatment. The ranks of drought resistance of tested upland cotton varieties (lines) based on D value. According to clustering results of D value, these upland cotton varieties (lines) could be divided into five types. Type 1(Strongly resistant) included 5 cotton varieties, type 2(Resistant) had 35 cotton varieties, type 3(Modetarely resistant) had 57 cotton varieties, type 4(Modetarely sensitive) had 56 cotton varieties and type 5(Sensitive) had 1 cotton variety. The yield of tested upland cotton varieties (lines) had significant and positive correlation with D (drought resistance comprehensive evaluation) value, CDC (comprehensive drought resistance coefficient) value and WDC (weight drought resistance coefficient) value. Finally, we identified two varieties Israel 1101 and yanzao 2, which were identified as drought resistant and sensitive upland cotton varieties at flowering and boll setting stage, respectively. Plant height, yield, single boll weight, effective boll number and height of the first branch could be used as the identification indices for drought resistance in upland cotton germplasm resources at flowering and boll setting stage.
Key words:  upland cotton  flowering and boll setting stage  drought resistance  varieties screening  agronomic traits

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