热带亚热带植物学报2025，Vol.33Issue(1)：33-41,9.DOI:10.11926/jtsb.4874
甘薯种质基腐病抗性鉴定和分析
Identification and Analysis of Resistance to Foot Rot of Sweetpotato Germplasm
摘要
Abstract
In order to explore the field resistance identification method of sweet potato(Ipomoea batatas)foot rot and to screen resistant germplasm,a total of 81 germplasms with resistance or other traits were identified after 1-3 years experiment,and the disease changes in different growth stages of sweet potato and the effects of different resistance grades on the yield loss rate of fresh sweet potato were analyzed.The results showed that among the 81 germplasms,24 and 11 were highly resistant and resistant,respectively.From 90 to 120 d of growth stage,the disease changed obviously,especially the proportion of grade 4 disease of the susceptible species increased rapidly.There was a significant negative correlation between fresh potato yield and disease index(r=-0.978 1**),and the average yield loss rate of fresh potato increased by 19.35%for each resistance grade decrease.At 120 d of growth stage,there was a significant positive correlation between incidence and disease index(r=0.992 5**).Therefore,in addition to disease index,incidence could also be used as an index to identify resistance to foot rot of sweet potato.关键词
甘薯基腐病/种质/抗性/发病率/病情指数Key words
Sweet potato foot rot/Germplasm/Resistance/Incidence rate/Disease index引用本文复制引用
刘也楠,黄立飞,何贤彪,刘伟明..甘薯种质基腐病抗性鉴定和分析[J].热带亚热带植物学报,2025,33(1):33-41,9.基金项目
浙江省农业(粮食)新品种选育重大科技专项(2016C02050-7-3) （粮食）
浙江省农业(旱粮)新品种选育重大科技专项(2021C02064-1) （旱粮）
台州市农业类重点科技项目(1701ny12) （1701ny12）
台州市科技计划项目(23nya01) （23nya01）
国家甘薯产业技术体系项目(CARS-10)资助This work was supported by the Project for Agricultural(Grain)New Varieties Breeding Major Science and Technology in Zhejiang(Grant No.2016C02050-7-3),the Project for Agricultural(drought grain)New Varieties Breeding Major Science and Technology in Zhejiang(Grant No.2021C02064-1),the Project for Agricultural Key Science and Technology in Taizhou(Grant No.1701ny12),the Project for Science and Technology Plan in Taizhou(Grant No.23nya01),and the Project for National Sweet Potato Industry Technology System(Grant No.CARS-10). （CARS-10）
