Resistance to stripe rust and its physiological analysis of different temperature typical wheat in seedling stage | 不同温度型小麦幼苗期的抗锈性及其生理特性分析
2009
Cheng Jingjing, Northernwest Agriculture and Forestry University, Yangling (China), College of Plant Protection | Zhou Chunju, Northernwest Agriculture and Forestry University, Yangling (China), College of Life Science | Li Rong, Northernwest Agriculture and Forestry University, Yangling (China), College of Plant Protection
Chinese. 明确冷、暖型小麦幼苗期的抗锈性，以及其叶绿素含量、细胞膜相对透性与抗病性的关系。以典型的冷型小麦品种陕229、小偃6号和暖型小麦品种NR9405为供试材料，通过盆栽试验调查抗锈性指标，利用分光光度法和电导仪法测定小麦叶片叶绿素含量和细胞膜相对透性。所有供试小麦品种在人工接种条锈菌CY29后均表现为感病（反应型3~4），但冷型小麦的抗锈性较暖型小麦强，表现为病害潜育期较长、花斑数较少、产孢期较短、产孢量较少。冷型小麦叶绿素含量下降较缓慢，细胞膜相对透性较低，细胞膜伤害率低。不同温度型小麦幼苗期抗条锈性与其生理特征密切相关。
Show more [+] Less [-]English. The study confirmed the chorophyll content, relative membrane permeability and resistance to stripe rust of the different temperature typical wheats including Shaan 229, Xiaoyan 6 and NR9405. The resistant index to stripe rust, chorophyll content and relative membrane permeability were tested by the method of potted experiment, spectrophotometry and electric conductivity instrument in seedling stage. The results indicated that all of the tested varieties showed susceptibility to stripe rust. But the cooler typical wheat variety Shaan 229 showed longer latent period, less spos, shorter confinement, more leaf chorophyll content, less relative membrane permeability compared with the warmer one NR9405 after inoculation with CY29. This indicated that there is close relation between the resistance of wheat varieties to stripe rust and physiological characteristics. These results show that the resistance to striperust of different femperahure typical wheat is closely related to its physiological characteristics.
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