菠菜抗霜霉病育种研究进展

Research Progress in Breeding Spinacia oleracea L.for Resistance to Downy Mildew

菠菜是我国重要的经济叶菜之一,营养物质含量丰富。随着菠菜种植面积的逐年增加,霜霉病菌的生理小种不断更新,霜霉病的发生也日益严重,对菠菜生产造成了重大损失。鉴定菠菜霜霉病菌的生理小种,筛选抗病基因,培育抗病品种是解决此问题的前提和基础。本文对菠菜霜霉病菌生理小种分化现状、接种鉴定方法、病情指数和抗病分级等进行了介绍,综述了菠菜抗霜霉病育种历史进程、分子标记的构建、候选基因的定位和分析等研究进展,分析了目前菠菜抗霜霉病育种中存在的主要问题,并对今后的发展趋势进行了展望。

Spinach is one of the important economic leafy vegetables in China,with rich nutritional content.With the increasing planting area of spinach year by year,the races of spinach downy mildew pathogen Peronospora effuse are constantly updated,and the occurrence of downy mildew is also becoming increasingly serious,causing significant losses to spinach production.Identifying the races of spinach downy mildew pathogen,screening resistant genes,and breeding resistant varieties are the prerequisites and foundations for solving this problem.This review introduces the differentiation status of Peronospora effuse races,inoculation identification methods,disease index standards and disease resistance grading.It reviews the research progress of breeding process of resistance to downy mildew in spinach,construction of molecular markers,location and analysis of candidate genes,and analyzes the main problems existing in current spinach breeding for resistance to downy mildew.Finally,it looks forward to future development trends.