中国蜜环菌生物种与北美种的交配关系

MATING RELATIONSHIPS BETWEEN CHINESE BIOLOGICAL SPECIES AND NORTH AMERICAN SPECIES OF ARMILLARIA

将中国三个未知蜜环菌生物种A、C、D的38个代表菌株与北美蜜环菌A．sinopina、A．calvescens、A．nabsnona、A．gemina、A．ostoyae、NABSX等六个种的22个代表菌株进行了配对试验，结果表明中国生物种A与北美种A．sinopina互交可育，属于同一种。中国生物种C与任一北美种都互交不育，不存在部分可育现象，为亚洲特有种。中国生物种D与欧美的A．ostoyae的两个菌株互交可育，实验证实该种另外四个欧美菌株已经失去交配能力，因此确认中国生物种D与A．ostoyae属于同种。

A pairing tests of Armillaria between three Chinese Biological Species (CBS) and six North American Biological Species (NABS) were conducted. Thirty-eight monospore isolates from Northeast China, which are representative of CBS A, CBS C and CBS D have been mared with tested strains of A sinapina, A calvescens, A gemina, A nabsnona, A ostoyae and NABS X respectively. As a results, CBS A from Changbai and greater Xing--an mountains was interfertile with A sinapina completely and identified as A sinapina .CBS C was intersterile with any tester of NABS, belonging to Asian-specific species. CBS D was interfertile with tWo isolates of A ostoyae, however, it appears to be incompatible with other four isolates because the mating ability of these four isolates have been degenerated. CBS D was identified as A ostoyae. The partial interfertility not, but the reduced growth interachon was observed in the pairing tests.