园艺学报 ›› 2022, Vol. 49 ›› Issue (4): 885-892.doi: 10.16420/j.issn.0513-353x.2021-0222

• 研究报告 • 上一篇    下一篇


张世才1, 李怡斐1, 王春萍2, 杨小苗1, 黄启中1, 黄任中1,**()   

  1. 1.重庆市农业科学院蔬菜花卉研究所,重庆 401329
    2.重庆市农业科学院生物技术研究所,重庆 401329
  • 收稿日期:2021-09-06 修回日期:2022-01-17 出版日期:2022-04-25 发布日期:2022-04-25
  • 通讯作者: 黄任中
  • 基金资助:

Resistance Identification and Evaluation of Pepper Germplasm to Colletotrichum acutatum

ZHANG Shicai1, LI Yifei1, WANG Chunping2, YANG Xiaomiao1, HUANG Qizhong1, HUANG Renzhong1,**()   

  1. 1. Vegetable and Flower Research Institute,Chongqing Academy of Agricultural Sciences,Chongqing 401329,China
    2. Biotechnology Research Institute,Chongqing Academy of Agricultural Sciences,Chongqing 401329,China
  • Received:2021-09-06 Revised:2022-01-17 Online:2022-04-25 Published:2022-04-25
  • Contact: HUANG Renzhong


一年生辣椒中极度缺乏抗尖孢炭疽菌(Colletotrichum acutatum)的育种材料,亟需开展抗炭疽病辣椒资源的发掘。采用室内果实离体接种结合田间病圃,对74份引自美国、西班牙等的辣椒种质进行了对尖孢炭疽菌的抗性鉴定。结果表明:40008和30163经室内针刺接种后的发病率分别为4.37%和1.08%,病圃鉴定的病情指数为5.49和9.07,表现为高抗;11242和PI201234室内针刺接种后的发病率为8.63%和9.86%,病圃鉴定的病情指数为18.93和22.34,表现为抗病;10022和10062等17份种质表现为中抗;其余50份种质表现为感病。40008和30163均属晚熟类型,果实小,单株结果数少,可通过回交转育、花药培养及分子生物学技术改良后利用。这2份高抗种质的挖掘,可为抗炭疽病新品种的选育、QTL定位及分子标记的开发等奠定材料基础。

关键词: 辣椒, 种质资源, 尖孢炭疽菌, 抗性鉴定


Due to the extreme lack of breeding materials resistant to Colletotrichum acutatum in pepper,it is urgent to import and explore the excellent germplasm resources resistant to anthracnose. In this study,the resistance of 74 imported pepper germplasms from the United States and Spain to anthracnose were identified by in vitro inoculation and field trials. The results showed that 40008 and 30163 had better resistance to anthracnose with the incidence of 4.37% and 1.08% by in vitro inoculation method,and the disease indexes of field trails were 5.49 and 9.07,respectively. 11242 and PI201234 had anthracnose resistance with the incidence of 8.63% and 9.86%,and the disease indexes of field trails was 18.93 and 22.34,respectively. Seventeen germplasms such as 10022 and 10062 showed moderate resistance. The remaining 50 materials were susceptible to anthracnose. Both 40008 and 30163 are late-ripening with small fruit and less fruit set percentage,so it needs to be utilized through the improvement of backcross,anther culture and the molecular biology technology. The results will lay a foundation for the breeding of new anthracnose resistant varieties,QTL mapping and molecular marker development.

Key words: pepper, germplasm resources, Colletotrichum acutatum, resistance identification