Zeng Jing, Feng Shujie, Cai Jiangqiao, Wang Ling, Lin Fei, Pan Qinghua
Laboratory of Plant Resistance and Genetics, College of Natural Resources and Environmental Science, South China Agricultural University, Guangzhou, 510642, China.
Plant Dis. 2009 Mar;93(3):238-242. doi: 10.1094/PDIS-93-3-0238.
A collection of 520 field isolates of the rice blast fungus (Magnaporthe oryzae) originating from five provinces in China was assessed for mating type and sexual fertility. One of the two tester sets was composed of isolates collected from barley and the other from rice. Two mating types (MAT1-1 and MAT1-2) were identified among the 443 fertile isolates. The two mating types were roughly in balance with one another in the southwestern region but one or the other predominated in the southeastern and southern regions. Male-only fertile isolates were the most common, and only a few hermaphroditic and no female only fertile isolates were detected. The fertility level of the isolates was variable. Isolates from Jiangsu were more fertile than those from Fujian. The mating capacity of the testers collected from barley was higher than that of those collected from rice, but this was because the MAT1-2 testers differed very significantly from one another. In contrast, the mating capacities of the two MAT1-1 testers were similar to one another.
对来自中国五个省份的520株稻瘟病菌（Magnaporthe oryzae）田间分离株进行了交配型和有性育性评估。两个测试菌株组中的一组由从大麦上分离得到的菌株组成，另一组由从水稻上分离得到的菌株组成。在443株可育分离株中鉴定出两种交配型（MAT1-1和MAT1-2）。这两种交配型在西南地区大致平衡，但在东南和南部地区，其中一种交配型占主导地位。仅雄性可育的分离株最为常见，仅检测到少数雌雄同体可育的分离株，未检测到仅雌性可育的分离株。分离株的育性水平各不相同。来自江苏的分离株比来自福建的分离株育性更高。从大麦上分离得到的测试菌株的交配能力高于从水稻上分离得到的测试菌株，但这是因为MAT1-2测试菌株彼此差异非常显著。相比之下，两个MAT1-1测试菌株的交配能力彼此相似。
