Xinjiang Agricultural Sciences ›› 2025, Vol. 62 ›› Issue (7): 1677-1686.DOI: 10.6048/j.issn.1001-4330.2025.07.013

• Food and cash crops column • Previous Articles     Next Articles

Assess ment of drought resistance and choice of sweet potato varieties

ZHAO Yuex1(), LUO Zhengqian2, WANG Qingqing1, XU Linli2, WANG Xian2, XIANG Li2, YU Yuexhua1(), LIU Enliang2()   

  1. 1. College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, China
    2. Crop Research Institute, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
  • Received:2024-12-22 Online:2025-07-20 Published:2025-09-05
  • Correspondence author: YU Yuexhua, LIU Enliang
  • Supported by:
    Large-Scale Exploration and Innovative Utilization of Sweet Potato Drought-Resistant Germplasm Resources(2023TSYCCX0011)

甘薯品种抗旱性评价及抗旱品种筛选

赵月1(), 罗正乾2, 王清清1, 徐琳黎2, 王仙2, 向莉2, 于月华1(), 刘恩良2()   

  1. 1.新疆农业大学农学院, 乌鲁木齐 830052
    2.新疆维吾尔自治区农业科学院作物研究所, 乌鲁木齐 830091
  • 通讯作者: 于月华,刘恩良
  • 作者简介:赵月(2000-),女,黑龙江七台河人,硕士研究生,研究方向为甘薯抗逆育种,(E-mail)19845920501@163.com
  • 基金资助:
    青年拔尖人才项目-青年科技创新人才:甘薯抗旱性种质资源规模化发掘与创新利用(2023TSYCCX0011)

Abstract:

【Objective】 To study the difference of drought resistance of sweet potato germplasm resources in Xinjiang under drought environment and to screen suitable drought resistant varieties, which have provided important resources for sweet potato breeding and production in arid region of Xinjiang. 【Methods】 52 imported sweet potato germplasm resources and normal irrigation variety Chaotuou 1 were taken as materials and a field experiment was conducted in the experimental field of Xinjiang Academy of Agricultural Sciences in 2024. The experiment design included normal irrigation control group (CK) and natural drought treatment group (T). 9 key indicators were systematically evaluated in this study: Agronomic traits such as vine length, base branching number, stem diameter and yield, physiological indexes such as relative water content, malondialdehyde (MDA), proline (PRO), superoxide dismutase (SOD) and peroxidase (POD), combined with yield performance. The comprehensive drought resistance evaluation system was constructed by comprehensive drought resistance coefficient (CDC), membership function method (D-value), principal component analysis, grey correlation degree and cluster analysis. 【Results】 The response degree of the selected indexes to drought stress was more obvious than the sensitive response. Under drought stress, all indexes had different degrees of change, and the difference was large. Principal component analysis summarized the 9 indexes into 5 comprehensive indexes. The D-value distribution range was between 0.189 and 0.726. The relative water content was the most closely related to drought resistance. The D-value cluster analysis divided the germplasm into 5 drought-resistant grades, with 14 highly resistant varieties, There were 11 rather high resistant varieties, 9 medium resistant varieties, 13 sensitive varieties, and 5 sensitive varieties. 【Conclusion】 14 high-resistant germplasm, including Jiyuan 2, Ning E27-5 and Zheng Hong 32, are screened out.

Key words: sweet potato; drought resistance evaluation; natural drought; multi-index measurement; comprehensive analysis method

摘要:

【目的】研究新疆干旱环境下甘薯种质资源的抗旱性差异及筛选适宜的抗旱品种,为新疆干旱区甘薯育种与生产提供参考。【方法】以52份疆外引进甘薯种质资源及正常灌水品种潮薯1号为材料,于2024年度田间试验在新疆农业科学院试验场实施,试验设计包含正常灌溉对照组(CK)和自然干旱处理组(T),研究系统评估9项关键指标:蔓长、基部分枝数、茎粗、产量等农艺性状,相对含水量、丙二醛(MDA)、脯氨酸(PRO)、超氧化物歧化酶(SOD)及过氧化物酶(POD)等生理指标,结合产量表现,通过综合抗旱系数(CDC)、隶属函数法(D值)、主成分分析、灰色关联度与聚类分析构建综合抗旱评价体系。【结果】九个指标分为五个综合指标。所选指标对干旱胁迫的反应性和敏感性较强,在干旱胁迫下各指标均表现出不同程度的变化,且变化明显。试验材料的D值介于0.189和0.726。相对含水量与抗旱性关系最密切。并且D值聚类分析将种质资源划分为5个抗旱等级,分别为14份高抗品种。11份较抗品种,9份中抗品种,13份较敏感品种,5份敏感品种。【结论】筛选到冀元2号、宁E27-5、郑红32等14份高抗种质。

关键词: 甘薯, 抗旱性评价, 自然干旱, 多指标测定, 综合分析方法

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