| 大豆成株期抗旱性鉴定评价方法研究 |
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| 引用本文： | 祁旭升,刘章雄,关荣霞,王兴荣,苟作旺,常汝镇,邱丽娟.大豆成株期抗旱性鉴定评价方法研究[J].作物学报,2012,38(4):665-674. |
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| 作者姓名： | 祁旭升 刘章雄 关荣霞 王兴荣 苟作旺 常汝镇 邱丽娟 |
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| 作者单位： | 1 甘肃省农业科学院作物研究所, 甘肃兰州 730070；2 中国农业科学院作物科学研究所, 北京 100081 |
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| 基金项目： | 农业部保种项目[NB08-2130315-(25-31)-06,NB07-2130315-(25-30)-06,NB06-07040(22-27)-05];国家重点基础研究发展计划(973计划)项目(2009CB118400);甘肃省科技支撑计划项目(1104NKCA076);甘肃省农业科学院农业科技创新专项(2009GAAS22)资助 |
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| 摘 要： | 以我国不同地区育成的77个大豆品种(系)为供试材料、以晋豆21为对照, 在年降雨量不足40 mm的甘肃敦煌市, 设干旱胁迫和正常灌水2个处理, 考察与产量相关的8个农艺性状, 应用简单相关、等级相关等统计学方法, 筛选优异的抗旱种质资源, 旨在明确大豆成株期抗旱性鉴定指标和评价方法。9种抗旱性评价方法比较结果表明, 基于抗旱系数法、伤害指数和敏感指数对供试材料的抗旱性评价结果完全一致, 基于生物产量、单株粒数和单株荚数的综合评价方法与基于产量的直接评价方法比并无优势。经典的抗旱系数法适宜于筛选抗旱资源, 但不一定能筛选出正常条件下的丰产资源, 而本文提出的改进抗旱指数法可筛选到抗旱性和丰产性兼备的品种, 为抗旱育种和生产应用服务；通过划分不同品种熟期组, 筛选到不同熟期类型的抗旱、丰产品种。本研究为制订“大豆抗旱性鉴定评价技术规范”提供了理论依据, 对大豆资源的抗旱性鉴定和抗旱性育种具有重要的意义。
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| 关 键 词： | 大豆 成株期 抗旱性 鉴定指标 评价方法 |
| 收稿时间： | 2011-04-27 |
Comparison of Evaluation Methods for Drought-Resistance at Soybean Adult Stage |
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| QI Xu-Sheng
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LIU Zhang-Xiong
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GUAN Rong-Xia
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WANG Xing-Rong
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GOU Zuo-Wang
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CHANG Ru-Zhen
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QIU Li-Juan.Comparison of Evaluation Methods for Drought-Resistance at Soybean Adult Stage[J].Acta Agronomica Sinica,2012,38(4):665-674. |
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| Authors: | QI Xu-Sheng LIU Zhang-Xiong GUAN Rong-Xia WANG Xing-Rong GOU Zuo-Wang CHANG Ru-Zhen QIU Li-Juan |
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| Institution: | 1.Institute of Crop Sciences, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China;2.Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing 100081, China |
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| Abstract: | Drought is a very important abiotic stress for soybean production in China. A number of methods have been used to evaluate drought tolerance of soybean. In this study, 77 soybean varieties or lines with Jindou 21 as the control were planted under both conditions of drought stress and normal irrigation in Dunhuang City, Gansu province, where the annual rainfall is less than 40 mm. The identification criteria for drought-resistance were selected from eight yield-related agronomic traits, and different evaluation methods were compared by simple correlation, spearman correlation, stepwise regression and gray correlation. The results showed that the evaluation method of drought resistance coefficient had the same effect as that of index of damage and drought resistance index. The comprehensive evaluation methods based on biomass, grain number per plant and pod number per plant had no advantages than the direct evaluation method based on yield. Drought resistance rather than high yield could be se-lected by traditional drought resistance coefficient method. The soybean varieties with drought resistance and stable yield under both drought and normal conditions could be selected using the improved drought resistance index created in this study, such as Xudou 12, Zhongzuo 00-683, and Zhonghuang 24, which could be used for soybean production in drought stress area. We might select drought resistant soybean varieties based on their maturity groups. This study provided a theoretical basis for evaluating drought resistant soybean germplasm and for establishing the "standard evaluation system for drought resistant soybean". |
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| Keywords: | Soybean Adult stage Drought resistance Identification criterion Evaluation method |
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