植物学报2024，Vol.59Issue(1)：75-88,14.DOI:10.11983/CBB23016
耐低钾马铃薯品种的筛选与评价
Screening and Evaluation of Low-potassium Tolerance Potato Varieties
摘要
Abstract
Soil potassium deficiency has severely reduced the potato field production in China.Fortunately,different potato varieties respond to low-potassium conditions very differently.Therefore,the utilization of potato varieties with low-potassium tolerance is an important approach to reduce potassium application by increasing potassium utilization efficiency,thus promoting the sustainability and the green development of agriculture in China.In this study,17 biological features of 30 potato varieties were examined under normal potassium(202.5 kg·hm-2 K2O)and low potassium conditions(0 kg·hm-2 K2O),and nine representative features,including leaf area index,root-shoot ratio,shoot dry mass,root dry mass,tuber yield per plant,large tuber yield per plant,small tuber yield per plant,tuber dry mass,and tuber potassium accumulation were selected for subsequent analysis.The results showed that all feature values went down under the low potassium condition.Principal component analysis revealed that the nine features can be transformed into 4 independent comprehensive components,with a cumulative contributive rate of 87.1％.According to the comprehensive evaluation value(D value)and cluster analysis,the 30 varieties can be divided into 6 categories,including seven high tolerant varie-ties to low potassium:Lucinda,Favorita,Kexin1,Xisen6,Xingjia2,Helan15 and Chuanyin2,and six varieties with mod-erate tolerance to low potassium:Longshu20,Dingshu3,Jizhang12(W),Jiuen1,Longshu19,Jizhang12(Y).Furthermore,we developed a regression model Y=-0.595+0.247X5+0.155X4+0.138X3+0.167X8+0.088X1+0.081X6+0.097X9+0.053X2(R2=0.999,P=0.000)to distinguish the 30 varieties from each other with an accuracy above 90％.In summary,under low potassium condition,several features,including tuber yield per plant,root dry mass,shoot dry mass,tuber dry mass,leaf area index,large tuber yield per plant,tuber potassium accumulation and root-shoot ratio can be used to rap-idly identify low potassium tolerant varieties.关键词
马铃薯/低钾/综合评价/品种筛选/绿色农业Key words
Solanum tuberosum/low potassium/comprehensive evaluation/variety screening/green agriculture引用本文复制引用
刘寅笃,孙超,刘玉汇,刘震,毕真真,白江平,脱军康,李成举,张锋,张春利,张莹,王云姣,范又方,姚攀锋..耐低钾马铃薯品种的筛选与评价[J].植物学报,2024,59(1):75-88,14.基金项目
国家自然科学基金(No.31960442)、甘肃农业大学省级大学生创新创业训练计划(No.S202210733025)、国家马铃薯产业技术体系(No.CARS-09-P10)、甘肃省科技计划(No.22JR5RA833,No.20YF8WA137,No.22JR5RA835)、甘肃农业大学公招博士科研启动基金(No.GAU-KYQD-2021-11)和甘肃省优秀研究生"创新之星"项目(No.2022CXZXB-025) （No.31960442）
