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新疆春小麦品种萌发期抗旱性评价 被引量:5

Xinjiang Spring Wheat at Germination Stage: Evaluation of Drought Resistance
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摘要 为了解新疆种植的部分春小麦品种的抗旱性,以20%PEG-6000作为水分胁迫剂,对10个新疆春小麦品种的发芽率、发芽势、相对芽长、相对根长、相对发芽率、萌发抗旱指数进行研究分析,并通过加权隶属函数法对供试材料的抗旱性进行了综合评价。结果表明:与对照相比,20%浓度的PEG胁迫后,发芽率、发芽势、相对芽长、相对根长、相对发芽率均受到抑制,不同品种降幅不同。10份春小麦的综合评价值(D值)在0.01~0.82之间,‘中国春’为强抗旱品种(1级),‘新春3号’、‘新春6号’、‘新旱688’等3个品种为中抗品种(2级),‘新春2号’、‘新春26号’等2个品种为弱抗旱品种(3级),‘新春7号’、‘新春17号’、‘新春20号’、‘新春21号’等4个品种为不抗旱品种(4级)。最终筛选出‘中国春’、‘新旱688’、‘新春3号’和‘新春6号’更适应干旱胁迫环境,可作为新疆小麦抗旱育种的种质资源。 To understand the drought resistance of different spring wheat varieties in Xinjiang, 20% PEG- 6000 was used as water stress agent, germination rate, germination potential, relative bud length, relative root length, relative germination rate and drought resistance index of 10 spring wheat varieties were analyzed. The subordinate function analysis was used to comprehensively evaluate the drought resistance of the wheat varieties. The results indicated that compared with those of the control, the germination rate, germination potential, relative bud length, relative root length and relative germination rate were inhibited under 20% PEG stress, and the range of reduction in different varieties was different. The comprehensive evaluation value (D value) of 10 spring wheat varieties was from 0.01 to 0.82. 'Chinese Spring' was the strong resistant variety (Grade 1); 'Xinchun No.3', 'Xinehun No.6' and 'Xinhan No.688' were the medium resistant varieties (Grade 2); ' Xinchun No.2',' Xinchun No.26' were the weak resistant varieties (Grade 3); ' Xinehun No.7', ' Xinchun No.17', 'Xinchun No.20' and 'Xinehun No.21' were incapable of drought resistance (Grade 4). At last, we selected 'Chinese Spring', 'Xinhan No.688', 'Xinchun No.3' and 'Xinehun No.6', which were more suitable for drought stress environment, to be germplasm resource of drought resistant wheat breeding in Xinjiang.
作者 白璐 贾永红 杨安娜 童婷 阎晓菲 张新玲 Bai Lu;Jia Yonghong;Yang Anna;Tong Ting;Yan Xiaofei;Zhang Xinling(College of Science and Technology,Xinjiang Agricultural University,Urumqi 830091;Qitai Wheat Test Station of Xinjiang Academy of Agricultural Science,Qitai Xinjiang 831810)
出处 《中国农学通报》 2018年第22期20-24,共5页 Chinese Agricultural Science Bulletin
基金 新疆农业大学科学技术学院青年科研启动基金"新疆小麦种质资源抗旱性鉴定与筛选"(2016KJKY004)
关键词 春小麦 PEG-6000胁迫 形态指标 抗旱性 spring wheat PEG-6000 stress morphological indexes drought resistance
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