栽培种花生对青枯菌潜伏侵染的反应

Reaction to latent infection by Ralstonia solanacearum in groundnut

通过对国内外已鉴定出的主要抗青枯病花生种质进行人工接种和多克隆抗体检测，研究栽培花生对青枯菌潜伏侵染的反应。根据青枯菌在花生植株体内的潜伏定殖部位，将抗病花生品种划分为５个反应类型，类型间抗性水平和稳定性存在明显差异。通过分析潜伏定殖率与植株生长发育的关系，发现不同花生品种受潜伏侵染影响的程度不同，鉴定出的几个产量水平高而且受潜伏侵染影响较小材料，可以作为进一步育种的抗源亲本。

Diversity of reaction to latent infection by Ralstonia solanacearum in groundnut ( Arachis hypogaea ) was investigated by artificial inoculation and ELISA test. Most of the available groundnut genotypes identified as resistant to bacterial wilt caused by R.solanacearum were involved in this study. The thirty six genotypes used were divided into five reaction types based on colonization position of the pathogen inside plant tissue after inoculation. The reaction type was found to be related to the field resistance performance of the genotypes. The relationship between latent colonization frequency and the extent of damage by latent infection was also assessed. The genetic diversity in cultivated groundnut for reaction to latent infection was discussed.