| 重要胡麻栽培品种的抗旱性综合评价及指标筛选 |
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| 引用本文： | 罗俊杰,欧巧明,叶春雷,王方,王镛臻,陈玉梁.重要胡麻栽培品种的抗旱性综合评价及指标筛选[J].作物学报,2014,40(7):1259-1273. |
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| 作者姓名： | 罗俊杰 欧巧明 叶春雷 王方 王镛臻 陈玉梁 |
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| 作者单位： | 1 甘肃省农业科学院生物技术研究所, 甘肃兰州 730070；2 甘肃农业大学资源与环境学院, 甘肃兰州 730070 |
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| 基金项目： | 本研究由国家现代农业产业体系建设专项(CARS-17-SYZ-6)资助。 |
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| 摘 要： | 以15份国内胡麻栽培品种为材料,设自然降雨和正常灌水2个处理,考察与抗旱性相关的7个农艺性状、8个生理生化指标及产量指标,采用综合抗旱系数、因子分析、隶属函数、聚类分析和灰色关联度分析相结合的方法,对其抗旱性进行综合评价、抗旱型划分和评价指标筛选。结果显示,相关性状指标对干旱胁迫的反应及关联程度各异,可优先选择与抗旱性关系密切的产量及其相关性状、光合作用因子、叶片抗氧化因子等相关生理生化性状;因子分析表明,6个公因子可代表胡麻抗旱性90.89%的原始数据信息量。基于抗旱性度量值(drought resistance comprehensive evaluation values,D值)和加权抗旱系数(weight drought resistance coefficient,WDC值)的各品种抗旱性排序相近,位居前6位的抗旱品种相同。各品种D值与综合抗旱系数(comprehensive drought resistance coefficient,CDC值)、WDC值、产量抗旱系数(yield drought resistance coefficient,Y值)之间均呈极显著正相关,而各品种Y值与CDC、WDC值间极显著正相关;据D值将供试品种划分为5个抗旱级别,可较好地反映品种的选育条件及适应地区。试验结果说明以D值为主要参数,以WDC为辅助评价参数,评价以产量为主要考量目标的胡麻抗旱性是适宜且准确的;以抗旱性综合评价方法进行胡麻抗旱性综合评价、抗旱型划分、评价指标筛选是准确的。
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| 关 键 词： | 胡麻 农艺性状 生理生化指标 抗旱性综合评价 隶属函数 |
| 收稿时间： | 2013-11-18 |
Comprehensive Valuation of Drought Resistance and Screening of Indices of Important Flax Cultivars |
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| LUO Jun-Jie,OU Qiao-Ming,YE Chun-Lei,WANG Fang,WANG Yong-Zhen,CHEN Yu-Liang.Comprehensive Valuation of Drought Resistance and Screening of Indices of Important Flax Cultivars[J].Acta Agronomica Sinica,2014,40(7):1259-1273. |
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| Authors: | LUO Jun-Jie OU Qiao-Ming YE Chun-Lei WANG Fang WANG Yong-Zhen CHEN Yu-Liang |
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| Institution: | 1.Biotechnology Institute, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China;2.College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou 730070, China |
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| Abstract: | Seven main agronomic traits, eight physiological indices and yield index of 15 main flax cultivars in China were measured during maturity under the conditions of irrigation and natural rainfall. Comprehensive drought resistance coefficient (CDC value), factor analysis, subordinate function coefficients, clustering analysis, grey relational analysis were used to evaluate the drought resistance, classify drought resistance type and select evaluation indices in tested flax cultivars. The response to drought stress and correlations of tested traits and indices were different. Yield and photosynthesis factors as well as leaf antioxidant factors were closely associated with drought resistance, so could be used as priority indicator of drought resistance evaluation. Factor analysis showed that six common factors could represent 90.89% of the original information of flax drought resistance data. The ranks of drought resistance of tested flax cultivars based on drought resistance comprehensive evaluation values (D value) and weight drought resistance coefficient (WDC value) were similar, the drought resistance was the same for six flax cultivars, arranging from the first to third in drought resistance. D values of tested flax cultivars had significant and positive correlation with CDC value, WDC value and Y value. Y values of tested flax cultivars also had very significant and positive correlation with CDC value and WDC value. According to D value clustering analysis, tested cultivars were divided into five grades in drought resistance, reflecting the diffirence of cultivars in breeding condition and adaptive region growing well. Drought resistance evaluated mainly with yield by D value as index and WDC value as auxiliary index in flax were appropriate and accurate. Drought resistance comprehensive evaluation methods can be used in studying exactly drought resistance evaluation, classification of drought resistant type and screening evaluation indices in flax. |
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| Keywords: | Flax Agronomic traits Physiological and biochemical indices Drought resistance comprehensive evaluation Subordinate function coefficients |
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