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      烟草黑胫病抗性育种研究进展

      Progress in Breeding for Resistance to Tobacco Black Shank

      • 摘要: 烟草黑胫病是一种由烟草疫霉Phytophthora nicotianae引起的土传卵菌病害,是我国烟草生产中为害严重的根茎类病害之一,严重威胁烟叶的产量和品质。解析黑胫病病原及其发病规律、积极推进抗病品种培育与抗性基因克隆对推动烟草产业可持续发展具有重要意义。本文介绍了烟草黑胫病病原菌的生理小种分化及其危害,着重阐述了烟草黑胫病的抗源与抗性育种的发展与现状、抗性遗传规律及抗病基因定位与功能鉴定中的研究进展,并指出目前黑胫病抗性育种仍然存在抗源相对单一、关键抗病基因尚未被克隆及外源抗源引入影响烤烟品质等问题,为烟草黑胫病抗性育种工作提供参考。

         

        Abstract: Tobacco black shank, a soil-borne oomycete disease caused by Phytophthora nicotianae, is one of the most devastating root and stem diseases in China’s tobacco production, posing a severe threat to the yield and quality of tobacco leaves. Elucidating the pathogen and its epidemiology, and actively promoting the breeding of disease-resistant varieties and the cloning of resistance genes are of great significance for advancing the sustainable development of tobacco industry. This paper reviews the physiological race differentiation of the tobacco black shank pathogen and the damage it causes, with a focus on reviewing the development and current status of resistance sources and resistance breeding for tobacco black shank, the genetic laws of resistance, and the research progress in resistance gene mapping and functional characterization. Furthermore, it points out the existing problems in current black shank resistance breeding, including the relatively limited resistance sources, the uncloned key resistance genes, and the negative impact of introducing exotic resistance sources on flue-cured tobacco quality. This review aims to provide a reference for future resistance breeding against tobacco black shank.

         

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