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  • 王兰芬,武晶,彭琳,等.绿豆种质资源抗旱性鉴定评价[J].植物遗传资源学报,2019,20(5):1141-1150.    [点击复制]
  • WANG Lan-fen,WU Jing,PENG Lin,et al.Evaluation for Drought-tolerance Germplasm Resource in Mungbean[J].植物遗传资源学报,2019,20(5):1141-1150.   [点击复制]
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绿豆种质资源抗旱性鉴定评价
王兰芬1, 武晶1, 彭琳2, 季良2, 王述民1
0
(1.中国农业科学院作物科学研究所/农作物基因资源与基因改良国家重大科学工程;2.新疆农业科学院粮食作物研究所)
摘要:
培育抗旱品种是应对全球气候干旱最经济、有效的途径之一,而抗旱种质的鉴定与筛选是其前提和基础。本研究 以303份绿豆种质资源为材料,在新疆奇台县自然条件下,于2017、2018年连续两年开展绿豆种质抗旱性研究。通过考察不同 种质单株产量、单株荚数、单株粒数、单株生物量、株高等指标,计算各指标在旱胁迫与灌水条件下的比值,运用相关性分 析确定抗旱指标;采用抗旱系数、隶属函数和抗旱指数法,评价绿豆的抗旱性;比较3种评价结果,选择最适宜的评价方法, 进而筛选抗旱种质。结果表明,抗旱系数与单株荚数、单株粒数、单株生物量、小区产量在旱胁迫与灌水条件下的比值呈极 显著正相关,从而遴选这4项指标作为绿豆抗旱性鉴定的评价指标;抗旱系数、隶属函数和抗旱指数三者呈极显著的正相关, 3种评价方法抗旱分级结果一致性较高,但抗旱指数法筛选的高抗、抗旱资源在旱胁迫和灌水条件下平均单株产量高于通过其 他2种方法筛选的相应级别的平均单株产量,故认为抗旱指数法更适宜于自然条件下大规模的绿豆抗旱性鉴定;2年抗旱指数 评价结果一致的种质103份,其中,高抗种质9份、抗旱种质11份、中抗种质61份、敏感种质8份和14份极敏感种质。本研究为 绿豆种质抗旱性研究提供理论指导和信息支撑。
关键词:  绿豆  抗旱性  相关性分析  隶属函数
DOI:10.13430/j.cnki.jpgr.20190129001
投稿时间:2019-01-29修订日期:2019-07-18
基金项目:国家自然科学基金(31671758);国家现代农业产业技术体系建设专项(CARS-08);中国农业科学院科技创新工程项目;国家农作物种质资 源共享服务平台(NICGR2017-006);农作物种质资源保护与利用专项(NWB036-07)
Evaluation for Drought-tolerance Germplasm Resource in Mungbean
WANG Lan-fen1, WU Jing1, PENG Lin2, JI Liang2, WANG Shu-min1
(1.Institute of Crop Science, Chinese Academy of Agricultural Sciences/ National Key Facility for Crop Gene Resources and Genetic Improvement;2.Institute of Food Crop, Xinjiang Academy of Agricultural Sciences,Wulumuqi)
Abstract:
Breeding for drought-tolerance varieties is one of the most cost-effective ways to meet global climate drought, and identification of the drought-tolerance germplasms is of importance in breeding. In this study, 303 mungbean accessions were tested for drought tolerance under the different irrigation conditions in Qitai Xinjiang in 2017 and 2018. Nine parameters were investigated, for instance yield per plant, pod number per plant, seed number per plant and biomass per plant. The ratios of all parameters between drought and irrigation condition were calculated. The drought tolerance indicators were determined by correlation analysis, and mungbean germplasm for drought-tolerance were evaluated by drought tolerance coefficient, subordinative function analysis and drought tolerance index. Based on the identified suitable evaluation method, we conducted the screening for drought-tolerance germplasm. The significant positive correlations on drought tolerant coefficient were observed between drought and irrigation conditions for pod number per plant, seed number per plant, biomass per plant and yield plot. The four indices were recommended for drought tolerance identification in mungbean. The correlations were significant among parameter values of three evaluation methods with a very high consistency. The drought tolerance germplasm resources, which were identified by the drought tolerance index, exhibited higher average yield per plant than by the two other methods under different water regimes. This results implied that the drought tolerance index was optimal to screen a large number of germplasm resources of mungbean at natural condition. 103 accessions, which showed identical results in 2017 and 2018, were finally identified. That included 9 varieties with high tolerance, 11 with tolerance, 61 with moderate tolerance, 8 with susceptibility, and 14 with high susceptibility. This results will provide theoretical guidance and basic information for future study on drought tolerance of mungbean.
Key words:  mungbean  drought tolerance  correlation analysis  subordinative function analysis

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