北方农业学报2023，Vol.51Issue(5)：40-50,11.DOI:10.12190/j.issn.2096-1197.2023.05.04
干旱对不同马铃薯品种生长和产量的影响
Effects of drought on the growth and yield of different potato varieties
摘要
Abstract
[Objective]To investigate the effects of drought on the growth,yield of different potato varieties and evaluate their drought resistance.[Methods]Plant height,stem diameter,leaf area index,chlorophyll content(SPAD value),dry matter accumulation,root-shoot ratio and yield were measured for 8 potato varieties treated with normal irrigation and drought stress.Using principal component analysis and membership function method,the comprehensive drought resistance measure(D)was calculated.The drought resistance of different potato varieties were then comprehensively evaluated.[Results]Under drought stress,the plant height,stem diameter,leaf area index and yield of the different potato varieties were all lower than those of normal irrigation treatment,while SPAD values were higher.The indexes of Dafeng No.10 and Xisen No.6 had no significant differences with normal irrigation treatment or small decreases,while the indexes of Luyin No.1,Dafeng No.9 and Jizhangshu No.12 were significantly lower than those of normal irrigation treatment.Different varieties had clear differences in the indexes.Xisen No.6 had the best plant height and stem diameter of 64.20 cm and 12.63 mm,respectively.Luyin No.1 had the lowest plant height of 49.53 cm.Jizhangshu No.12 had the smallest stem diameter of 10.13 mm.Huasong No.7 had the highest SPAD value of 53.03,while Jizhangshu No.12 had the lowest at 39.73.Dafeng No.10 performed best in leaf area index,dry matter accumulation,root-shoot ratio and yield of 1.88,170.80 g/plant,0.12,and 34 750 kg/hm2,respectively.Jizhangshu No.12 had the worst leaf area index,root-shoot ratio and yield of 0.94,0.08,and 18 750 kg/hm2.At 121.78 g/plant,Dafeng No.9 had the lowest dry matter accumulation.Dafeng No.10 and Xisen No.6 had high drought resistance indexes of 0.986 and 0.756,respectively.Two principal components were obtained through principal component analysis:the first contributed 57.807%and the eigenvalue was 5.203,and the second contributed 20.281%and the eigenvalue was 1.825.Under drought stress,the comprehensive drought resistance measure of Dafeng No.10 was the largest,1.000.[Conclusion]Based on the growth,yield,and the comprehensive drought resistance measure of different potato varieties,Dafeng No.10 showed strong drought resistance.关键词
马铃薯/干旱胁迫/生长指标/产量/抗旱性Key words
Potato/Drought stress/Growth indexes/Yield/Drought resistance分类
农业科技引用本文复制引用
李保成,伞薪潼,康文钦,任永峰,张德健,李娟,张向前,赵志媛,韩云飞,张乐..干旱对不同马铃薯品种生长和产量的影响[J].北方农业学报,2023,51(5):40-50,11.基金项目
内蒙古农牧业科技创新基金项目(2022CXJJN10) （2022CXJJN10）
国家重点研发计划项目(2021YFD901104) （2021YFD901104）
