茄青枯病に關する研究 : I. 寄主反應の品種間差異に就いて
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概要
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The present paper reported the results of ex-periments on the varietal resistance of eggplants to the bacterial wilt disease caused by Pseudomonas solanacearum, using too varieties, Daisen Maru No. 2 (snsceptible) and Durable Shinkuro (resistant). From the morphological observations, the writer found cicatrice around the affected parts of eggplants. There were no essential differences, in these morphological barriers between the two varieties used. No definite bacteriostatic effect in the exuded juice from the surface of both plants or in the expressed juice of plant was observed. The growth of the bacteria on the surface of plant, however, was definitely suppressed in the resistant variety. The writer also observed a change in the population of the pathogenic bacteria within leaf tissues of both plants after the artificial injection. After forty eight hours, the writer found a large differ-ence in the population of bacteria in the two plant tissues, showing the acceleration in Daisen Maru and the inhibition in Durable Shinkuro. The chromatographic separation of the expressed juice was also performed. The treated papers were cut into three parts and dried. They were called C, B, and A from the top, respectively. A_1, B_1, C_1 belong to Daisen Maru, and A_2, B_2, C_2, to Durable Shinkuro. The writer extracted the substances of every part of the papers into distilled water with the following eight combinations: A_1B_1C_1, A_2B_1C_1, A_1B_2C_1, A_1B_1C_2, A_2B_2C_2, A_1B_2C_2, A_2B_1C_2, A_2B_2C_1. Thus the suppressive effect of these extracts upon bacterial growth was examined. From the results of these experiments, the writer confirmed the most strongest suppressive effect in C fraction of Shinkuro juice.
- 日本植物病理学会の論文
- 1953-07-31
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- 茄青枯病に關する研究 : I. 寄主反應の品種間差異に就いて