| 吉林省玉米骨干自交系苗期耐旱性鉴评 |
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| 引用本文： | 王喜慧,郑婷婷,王丕武.吉林省玉米骨干自交系苗期耐旱性鉴评[J].玉米科学,2016,24(4):35-40. |
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| 作者姓名： | 王喜慧 郑婷婷 王丕武 |
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| 作者单位： | 吉林农业大学农学院, 长春 130118,吉林农业大学农学院, 长春 130118,吉林农业大学农学院, 长春 130118 |
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| 基金项目： | 吉林省主要作物分子标记辅助育种技术平台建设、农业部“948”高效作物分子育种体系核心技术引进项目（2013-Z47） |
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| 摘 要： | 以78份吉林省玉米骨干自交系为试材,在温室条件下进行苗期干旱胁迫模拟,测定株高、茎粗、根鲜重、地上部分鲜重、根干重、地上部分干重等6项形态指标,估算各性状指标的耐旱系数,作为评价参数进行主成分分析和聚类分析,综合评价参试玉米自交系苗期耐旱性。结果表明,干旱胁迫组测定的形态指标数据与对照组相比均降低,变异幅度有明显差异。根鲜重耐旱系数、地上干重耐旱系数作为综合指标对玉米自交系苗期耐旱性评价的贡献率优于其他指标。聚类分析将参试玉米自交系划分出5个耐旱等级,郑58、S121、W9813、6F576为极强耐旱,丹598、8723、中128、骨马4404等18份玉米自交系为强耐旱,HCL645、四-4112、C8605-2、龙抗11等25份玉米自交系为中度耐旱。
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| 关 键 词： | 玉米自交系 耐旱性鉴评 耐旱系数 主成分分析 聚类分析 |
| 收稿时间： | 2016/1/22 0:00:00 |
Evaluation on Drought Tolerance of Elite Maize Inbred Lines in Jilin Province at Seedling Stage |
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| WANG Xi-hui,ZHENG Ting-ting and WANG Pi-wu.Evaluation on Drought Tolerance of Elite Maize Inbred Lines in Jilin Province at Seedling Stage[J].Journal of Maize Sciences,2016,24(4):35-40. |
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| Authors: | WANG Xi-hui ZHENG Ting-ting and WANG Pi-wu |
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| Institution: | Agriculture College, Jilin Agricultural University, Changchun 130118, China,Agriculture College, Jilin Agricultural University, Changchun 130118, China and Agriculture College, Jilin Agricultural University, Changchun 130118, China |
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| Abstract: | Eighty portions of elite maize inbred lines in Jilin province were used as test materials, simulated seedling drought stress under the greenhouse conditions, after drought stress, six morphological indexes including the plant height, stem diameter, root fresh weight, fresh weight of ground parts, root dry weight and dry weight on the ground were measured, estimated the drought tolerance coefficient of each character index as evaluation parameter, the principal component analysis and cluster analysis were performed to evaluate the drought tolerance of testing maize inbred lines comprehensively. The results showed that the morphological index data of drought stress group were lower than that of control group, there was a significant difference in the variation range; regarded drought tolerance coefficient of root fresh weight and drought tolerance coefficient of dry weight on the ground as the comprehensive index could evaluate drought tolerance of maize inbred lines better than other indexes at seedling stage; the cluster analysis divided testing maize inbred lines into 5 levels of drought tolerance: four were extremely strong drought tolerance; eighteen were strong drought tolerance; twenty five were moderate drought tolerance. |
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| Keywords: | Maize inbred line Drought tolerance evaluation Drought tolerance coefficient Principal compo-nent analysis Cluster analysis |
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