生物技术通报 ›› 2018, Vol. 34 ›› Issue (2): 150-156.doi: 10.13560/j.cnki.biotech.bull.1985.2017-0711

• 研究报告 • 上一篇    下一篇

辣椒抗蚜品种‘猪大肠’的抗蚜性遗传分析

梁晓, 伍春玲, 陈青   

  1. 中国热带农业科学院环境与植物保护研究所 农业部热带作物有害生物综合治理重点实验室 海南省热带作物病虫害生物防治工程技术研究中心 海南省热带农业有害生物监测与控制重点实验室,海口 571101;
  • 收稿日期:2017-08-28 出版日期:2018-02-26 发布日期:2018-03-12
  • 作者简介:梁晓,男,助理研究员,博士,研究方向:生物化学与分子生物学及作物抗虫性;E-mail:liangxiaozju@126.com
  • 基金资助:
    科技部星火计划重点项目(2015GA800002),农业公益性行业科研专项(200903034),海南省重大科技专项(DZX2013019)

Inheritance Analysis of Resistance to Aphid(Myzus persicae)for Pepper Cultivar “Zhudachang”

LIANG Xiao, WU Chun-ling, CHEN Qing   

  1. Environment and Plant Protection Institute,China Academy of Tropical Agricultural Sciences/Laboratory of Pests Comprehensive Governance for Tropical Crops,Ministry of Agriculture/Hainan Key Laboratory for Monitoring and Control of Tropical Agricultural Pests/Hainan Engineering Research Center for Biological Control of Tropical Crops Diseases and Insect Pests,Haikou 571101;
  • Received:2017-08-28 Published:2018-02-26 Online:2018-03-12

摘要: 桃蚜是辣椒生产上的主要害虫,发掘抗蚜种质资源,阐明其遗传规律,促进抗性品种培育,是防治蚜虫为害的重要途径。利用抗蚜辣椒品种‘猪大肠’和感蚜辣椒品种‘大羊角椒’为亲本材料构建遗传群体,对杂交后代抗蚜性遗传进行分析。结果表明,正反杂交F1代植株对桃蚜的反应均表现为高抗(HR),F2代的抗蚜与感蚜植株分离符合3∶1的比率。酶学分析表明‘猪大肠’抗蚜亲本、正反杂交F1代及其自交F2代抗蚜植株叶组织内多酚氧化酶(PPO)和过氧化物酶(POD)活性在受蚜虫为害后均显著提高,而感蚜亲本及正反杂交F2代植株酶活在受蚜害前后无显著差异。上述结果表明辣椒抗蚜性由显性单基因控制,能够稳定遗传,PPO和POD活性增加幅度与辣椒抗蚜性显著相关。

关键词: 辣椒, 抗蚜, 遗传分析, PPO, POD

Abstract: Myzus persicae(sulzer)is the major pest in pepper production. Excavating aphid-resistant germplasm resources,clarifying the genetic law and promoting the cultivation of resistant varieties is the important strategy for aphid control. In this study, the aphid-resistant pepper cultivar “Zhudachang” and aphid-susceptible pepper cultivar “Dayangjiaojiao”were used as parent material to develop the genetic population,moreover,the inherited aphid-resistant character of hybrid progeny was analyzed. The results showed that the reciprocal-hybrid F1 was highly resistant to aphid,while the resistant and susceptible plants in F2 hybrid fit the separation ratio of 3∶1. In addition,the activities of polyphenol oxidase(PPO)and peroxidase(POD)in aphid-resistant parent,reciprocal-hybrid F1 and F2 hybrid of “Zhudachang”significantly increased when infested by aphid,while the activities in either aphid-susceptible parent or reciprocal-hybrid F2 showed no significant difference. These results indicated that the resistance of pepper to aphid was controlled by dominant single gene,which was stably inherited;besides,the increased activities of PPO and POD was highly correlated to aphid resistance.

Key words: pepper, aphid resistance, inheritance analysis, PPO, POD