中国农学通报2026，Vol.42Issue(4)：8-16,9.
陇中地区马铃薯品种抗旱性综合评价
Comprehensive Evaluation of Drought Resistance of Potato Varieties in Longzhong Region
摘要
Abstract
To address the constraints of drought stress on potato production and the scarcity of high-quality drought-tolerant varieties in the arid and semi-arid regions of Longzhong,this study aimed to screen drought-tolerant and high-yielding potato varieties suitable for cultivation in the cool and cold areas of Longzhong.Using 12 potato varieties(or lines)as materials,including'L14140-5','Ganyin 9',and'Ly 1742-2',a split-plot experimental design was implemented.The main plots consisted of two water treatments:drought stress(non-irrigation)and normal irrigation,while the subplots comprised the varieties.Agronomic traits such as plant height,leaf area index(LAI),SPAD values,and yield were measured.A comprehensive evaluation of drought tolerance was conducted using the drought resistance coefficient,principal component analysis,membership function method,and cluster analysis.The results revealed that:(1)drought stress significantly inhibited potato growth and yield.Under irrigation treatment,increases of 0.77％-67.74％in plant height,2.94％-32.25％in LAI,0.82％-83.01％in SPAD values,4.73％-21.07％in dry matter accumulation per plant,and 1.53％-75.89％in yield were observed compared to drought stress conditions.(2)Significant differences in drought tolerance were observed among varieties.'Longshu 10'exhibited the best performance,with only a 1.53％yield reduction under drought stress,a drought resistance coefficient of 0.98,and a drought resistance index of 1.402.(3)Cluster analysis categorized the varieties into three groups:four highly drought-tolerant varieties('Longshu 10','L14140-5','Ly1742-2','Ly1725-1'),six moderately drought-tolerant varieties,and two weakly drought-tolerant varieties('Fuda 1','Wotu 5').In conclusion,'Longshu 10'and'L14140-5'demonstrated excellent comprehensive traits,strong drought tolerance,and stable yields,making them suitable for promotion and cultivation in the semi-arid regions of Longzhong.Future research should involve multi-year and multi-location trials,combined with physiological,biochemical indicators,and molecular markers,to further elucidate the drought tolerance mechanisms and provide more comprehensive support for drought-resistant breeding.关键词
陇中地区/马铃薯品种/干旱胁迫/抗旱性/农艺性状/产量/隶属函数/聚类分析Key words
Longzhong region/potato varieties/drought stress/drought resistance/agronomic traits/yield/subordinate function/cluster analysis分类
农业科技引用本文复制引用
王平,王镭,谢成俊,孙振荣,陈娟..陇中地区马铃薯品种抗旱性综合评价[J].中国农学通报,2026,42(4):8-16,9.基金项目
兰州市科技计划项目"旱作区马铃薯抗旱节水关键技术集成与应用"(2024-3-101) （2024-3-101）
兰州市科技计划项目"兰州牛肉拉面专用春小麦品种筛选与面粉品质研究"(2024-6-5). （2024-6-5）
