Further characterization of the physiologic races of Pseudomonas glycinea
Further characterization of the physiologic races of Pseudomonas glycinea
复制标题
甘氨酸假单胞菌生理小种的进一步表征
作者：
W. Fett;L. Sequeira
接种时的叶龄是决定大豆品种对叶枯病病原菌假单胞菌的差异反应的关键因素。在来自威斯康星州的23株大豆假单胞菌菌株中，22株为4号生理小种，1株为5号生理小种。在从英国哈彭登的国家植物病原细菌保藏中心获得的14个大豆假单胞菌菌株中，一个菌株属于1号生理小种，九个菌株属于4号生理小种，三个菌株属于本文指定为9号生理小种的新生理小种。一个菌株NCPPB 1764对大豆的致病性不能得到证实。几个大豆品种对大豆疫霉几个生理小种代表的反应与最初报道的不同之处在于获得了敏感而不是抗性反应。这种差异可能是由于实验条件与最初研究者使用的条件略有不同。
Leaf age at the time of inoculation was a critical factor determining the differential reaction of soybean cultivars to the leaf blight pathogen, Pseudomonas glycinea. Of 23 P. glycinea strains from Wisconsin, 22 were of race 4 and one of race 5. Of 14 P. glycinea strains obtained from the National Collection of Plant Pathogenic Bacteria, Harpenden, England, one strain was of race 1, nine strains were of race 4, and three strains were of a new physiologic race herein designated as race 9. Pathogenicity to soybean of one strain, NCPPB 1764, could not be confirmed.The reaction of several soybean cultivars to representatives of several physiologic races of P. glycinea differed from that originally reported in that a susceptible rather than a resistant response was obtained. This difference may have resulted from experimental conditions that differed slightly from those used by the original investigators.