猪肚菇担孢子交配型的分析

Analysis of Mating Types of Basidiospores in Panus giganteus

摘要:

以3个不同的猪肚菇菌株为材料, 采用三轮杂交系统研究了其担孢子的交配型。显微镜观察表明, 1个担子上着生有4个担孢子。交配型测定结果表明, 猪肚菇属四极性异宗结合。χ2测验结果显示, 2个菌株的4种交配型孢子单核体的比例符合1:1:1:1的分离规律, 1个菌株的担孢子交配型不呈预期的分离比。

关键词:猪肚菇, 担孢子, 交配型, 四极性

Abstract:

Four mating types of basidispores were determined by using three-cycle mating system, three strains of Panus giganteus were used as test materials. Microscopical examination revealed that basidia of P. giganteus produced four basidiospores. The results of mating tests showed that P. giganteus has a tetrapolar heterothallism mating system. χ2 tests indicated that the distribution of the four mating types among spore monokaryons was in accordance with the 1:1:1:1 law of segregation in two strains, but one strain did not display the expected segregation ratio of basidiospores.

Key words:Panus giganteus, Basidiospores, Mating type, Tetrapolar