新疆农业科学 ›› 2021, Vol. 58 ›› Issue (11): 2024-2034.DOI: 10.6048/j.issn.1001-4330.2021.11.007

• 种质资源·生理生化 • 上一篇    下一篇

新疆冬小麦品种资源萌发期耐旱性鉴定与筛选

王永刚1(), 张胜军2, 刘亚丽1, 樊艳星1, 郭彩琴1, 马艳明1()   

  1. 1.新疆农业科学院农作物品种资源研究所,乌鲁木齐 8300912
    2.新疆伊犁哈萨克自治州农业科学研究所,新疆伊宁 835011
  • 收稿日期:2020-09-03 出版日期:2021-11-20 发布日期:2021-12-16
  • 通信作者: 马艳明
  • 作者简介:王永刚(1963-),男,新疆乌鲁木齐人,助理研究员,研究方向为麦类作物种质资源,(E-mail) 13659935123@139.com
  • 基金资助:
    科技部、财政部国家农作物种质资源共享服务平台(新疆)项目(NICGR2015-029);科技部科技基础性工作专项课题(2011FY110200-8)

Identification and Screening of Drought Tolerance in Winter Wheat Cultivars in Xinjiang during Germination Period

WANG Yonggang1(), ZHANG Shengjun2, LIU Yali1, FAN Yanxing1, GUO Caiqin1, MA Yanming1()   

  1. 1. Research Institute of Crop Germplasm Resources, Xinjiang Academy of Agricultural Sciences, Urumqi 830091,China
    2. Institute of Agricultural Science and Technology of Ili Prefecture, Yining Xinjiang 835011, China
  • Received:2020-09-03 Online:2021-11-20 Published:2021-12-16
  • Correspondence author: MA Yanming
  • Supported by:
    Ministry of Science and Technology, Ministry of Finance National Crop Germplasm Resources Sharing Service Platform (Xinjiang) Project(NICGR2015-029);Science and Technology Foundation Project(2011FY110200-8)

摘要:

【目的】研究新疆冬小麦品种资源萌发期耐旱性鉴定与筛选,为选育抗旱性强的冬小麦品种提供种质依据。【方法】以新疆地方134个冬小麦品种和54个育成品种为材料,利用PEG-6000模拟干旱鉴定材料的萌发期耐旱性。【结果】地方品种的芽长、根长、芽鲜重、根鲜重和根冠比受旱胁迫影响程度大于育成品种,除个别指标间无相关性外,多数指标间均存在较大的相关性,确定4个独立的主成分作为耐旱性鉴定综合指标,材料分为5个耐旱性级别,134个地方品种中有7个高耐品种,54个育成品种中有3个高耐品种、18个耐旱品种,3个高耐品种均为伊犁地区选育的品种;18个耐旱品种中包括北疆地区的主栽品种新冬18号和南疆喀什地区的主栽品种新冬20号。【结论】筛选出10份强抗旱的新疆冬小麦品种。

关键词: 冬小麦; 品种资源; 萌发期; 耐旱性

Abstract:

【Objective】 Drought is the most important factor to reduce crop yield. Breeding varieties with strong drought resistance is an effective way to resist drought and ensure yield. Drought in wheat germination will lead to a large area of seedling shortage, which directly affects the stable development of wheat production. It is a direct and effective method to identify and select varieties with strong drought resistance in germination period from winter wheat variety resources in Xinjiang. 【Method】 Based on 134 local winter wheat varieties and 54 cultivated varieties in Xinjiang, drought tolerance during germination was simulated by PEG-6000. 【Result】 The results showed that bud length, root length, bud fresh weight, root fresh weight and root-to-crown ratio of local varieties were more affected by drought stress than those of bred varieties. Except that there was no correlation among individual indicators, there was a large correlation among most indicators. Four independent principal components were identified by principal component analysis as comprehensive indexes for drought tolerance identification. All materials were classified into 5 drought tolerance grades using comprehensive evaluation values, 7 high drought tolerance varieties were out of 134 local varieties, 3 high drought tolerance varieties were out of 54 cultivated varieties. All 18 drought-tolerant and 3 high-tolerant varieties were selected from Yili area. Among the 18 drought-tolerant varieties, Xindong 18 was the main cultivar in northern Xinjiang and Xindong 20 was the main cultivar in Kashi area of southern Xinjiang.【Conclusion】 Through comprehensive evaluation of drought tolerance,10 varieties of Xinjiang winter wheat with strong drought resistance are selected.

Key words: winter wheat; cultivars; identification and screening; drought

中图分类号: 


ISSN 1001-4330 CN 65-1097/S
邮发代号:58-18
国外代号:BM3342
主管:新疆农业科学院
主办:新疆农业科学院 新疆农业大学 新疆农学会

出版单位:《新疆农业科学》编辑部
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E-mail:xjnykx-h@xaas.ac.cn


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