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实验选用中国白梨(鸭梨、金花)和日本砂梨(新世纪、明月)的四个品种。通过对叶片接种梨黑星病菌(Venturia nashicola)分生孢子后,分期测定各品种的总酚。结果表明:总酚特别是OD酚与抗梨黑星病相关。但在两个梨系统中表现不尽相同。白梨系统中、抗病品种固有含酚量高于感病品种,接种后两者含酚量均增加,而抗病品种的酚尤其是OD酚含量增加明显。砂梨系统中感病品种固有含酚量高于抗病品种,接种后感病品种的含酚量最初下降,以后才上升;而抗病品种则相反开始便增加,OD酚持续增加至第10天。
The experimental selection of Chinese pear (pear, golden) and Japanese sand pear (new century, moon) four varieties. After inoculation of the leaves of Venturia nashicola conidia, the total phenols of each species were determined. The results showed that total phenols, especially OD phenol, were related to anti-pear scab. But the performance of the two pear system is not the same. In white pear system, the inherent phenolic content of resistant varieties was higher than that of susceptible varieties, and the content of phenols in both resistant cultivars increased after inoculation, while the contents of phenols, especially OD phenolics, in resistant cultivars increased significantly. The intrinsic phenolic content of susceptible cultivars in sand pear system was higher than that of resistant cultivars, and the phenolic content of susceptible cultivars decreased initially after inoculation, and then increased afterwards. However, the resistant phenotype increased from the contrary and OD phenols increased to the tenth day.