玉米自交系灌浆期耐热性评价

doi:10.6048/j.issn.1001-4330.2019.08.002

新疆农业科学 ›› 2019, Vol. 56 ›› Issue (8): 1382-1387.DOI: 10.6048/j.issn.1001-4330.2019.08.002

• 作物遗传育种·物质资源·分子生物学 • 上一篇下一篇

玉米自交系灌浆期耐热性评价

李铭东¹, 梁晓玲¹, 阿不来提·阿布拉¹, 韩登旭¹, 杨杰¹, 郗浩江¹, 商佳鑫², 滕元旭², 杨新军², 李召锋², 王业建¹

1.新疆农业科学院粮食作物研究所/农业部荒漠绿洲作物生理生态与耕作重点实验室,乌鲁木齐 830091;
2. 石河子大学农学院/新疆生产建设兵团绿洲生态农业重点实验室,新疆石河子 832000

收稿日期:2019-07-08 出版日期:2019-08-20 发布日期:2019-10-10
通信作者: 王业建(1981-),男,湖南人,博士,研究方向为玉米遗传育种,(E-mail)wangyejian0815@163.com
作者简介:李铭东(1966-),男,山西平陆人,副研究员,研究方向为玉米遗传育种,(E-mail)1458782300@qq.com
基金资助:
农业部荒漠绿洲作物生理生态与耕作重点实验室开放项目(25107020-201705);石河子大学国家级大学生创新创业训练计划项目(201910759009)

Analysis and Evaluation of the Heat Resistance of Maize Inbred Lines at Grain Filling Stage

LI Ming-dong¹, LIANG Xiao-ling¹, Abulaiti·Abula¹, HAN Deng-xu¹, YANG Jie¹, XI Hao-jiang¹, SHANG Jia-xin², TENG Yuan-xu², YANG Xin-jun², LI Zhao-feng², WANG Ye-jian¹

1. Key Laboratory of Desert-Oasis Crop Physiology, Ecology and Cultivation, Ministry of Agriculture/ Research Institute of Grain Crops, Xinjiang Academy of Agricultural Science, Urumqi 830091, China;
2. Key Laboratory of Oasis Eco-agriculture of Xinjiang Production and Construction Corps / College of Agronomy, Shihezi University, Shihezi Xinjiang 832003, China

Received:2019-07-08 Online:2019-08-20 Published:2019-10-10
Correspondence author: WANG Ye-jian(1981-),male,doctor,(E-mail)wangyejian0815@163.com
Supported by:
Supported by the Open Project of Key Laboratory of Oasis Eco-agriculture of Ministry of Agriculture, China (25107020-201705)and Innovation and Entrepreneurship Training Program for National College Students in Shihezi University(201910759009)

摘要/Abstract

摘要： 【目的】筛选出灌浆期耐热性强的玉米自交系。【方法】在花后7~17 d以自然生长为对照,分析玻璃温室高温处理下10份新疆骨干玉米自交系产量性状的变化,采用产量热稳定性分析与千粒重热感指数相结合的方法,评价供试材料的耐热性。【结果】LX9801、PH6WC、PHB1M、海014和武314在热胁迫下产量稳定性好,其中PH6WC丰产性突出。502、KW4M029、PH6WC、PHB1M和海014等5份自交系的千粒重热感指数小于1。综合产量热稳定性及千粒重热感指数,PH6WC和PHB1M的耐热性突出,海014耐热性较好。武314可作为耐热育种亲本材料。【结论】灌浆期热胁迫下千粒重的降低,是玉米自交系产量下降的主要原因,九禾6929可作为耐热育种种质资源。

关键词: 玉米自交系; 耐热性; 产量热稳定性; 热感指数

Abstract: 【Objective】 The purpose of this study is to screen out self-intersection lines of corn with strong heat resistance at grain filling stage. 【Methods】Compared with natural growth at 7 days after anthesis, the changes of yield characters of 10 Xinjiang backbone maize inbred lines treated with high temperature treatment in glass greenhouse were analyzed. The heat resistance of the tested materials was evaluated by combining yield thermal stability analysis with 1,000-grain weight thermal sensitivity index.【Result】 The result showed that high temperature stress reduced grain yield, 1,000-kernel weight and volume weight, and the reduction of yield mainly attributed to the decrease of 1,000-kernel weight. LX9801, PH6WC, PHB1M, Hai014 and Wu314 displayed well thermal stability under heat-stress and normal environments, among these maize inbred lines PH6WC had the higher yield. Cultivars with heat susceptibility of 1,000-kernel weight (SKGW) <1 in this study were 502, KW4M029, PH6WC, PHB1M and Hai 014. Based on the combination of both yield thermal stability and heat susceptibility of 1,000-kernel weight index, PH6WC and PHB1M were characterized with excellent high resistance to heat stress, the next was Hai 014. Wu 314 had well yield thermal stability and high 1,000-kernel weight under both normal and heat stress environments, which could be used as a heat resistance breeding parent. 【Conclusion】 The decrease of 1,000-grain weight under heat stress at grain filling stage is the main reason for the decrease of maize inbred line yield. Jiuhe 6929 has higher 1,000-kernel weight under both environments, which can be used as a heat resistance germplasm resource.

Key words: maize inbred lines; heat resistance; yield thermal stability; heat susceptibility

中图分类号:

S513

李铭东, 梁晓玲, 阿不来提·阿布拉, 韩登旭, 杨杰, 郗浩江, 商佳鑫, 滕元旭, 杨新军, 李召锋, 王业建. 玉米自交系灌浆期耐热性评价[J]. 新疆农业科学, 2019, 56(8): 1382-1387.

LI Ming-dong, LIANG Xiao-ling, Abulaiti·Abula, HAN Deng-xu, YANG Jie, XI Hao-jiang, SHANG Jia-xin, TENG Yuan-xu, YANG Xin-jun, LI Zhao-feng, WANG Ye-jian. Analysis and Evaluation of the Heat Resistance of Maize Inbred Lines at Grain Filling Stage[J]. Xinjiang Agricultural Sciences, 2019, 56(8): 1382-1387.

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玉米自交系灌浆期耐热性评价

Analysis and Evaluation of the Heat Resistance of Maize Inbred Lines at Grain Filling Stage

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