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Southwest Guizhou Autonomous Prefecture is a typical mountainous area with low latitude and high altitude and has abundant water resources. The specific climate and geographical environment of this region enables the appearance of abundant wild sugarcane germplasm resources. In order to enrich the wild germplasm resources and genetic diversity of National Germplasm Repository of Sugarcane (NGRS), and reveal the distribution of wild sugarcane germplasm resources in the region, the wild sugarcane resource investigation team of Sugarcane Research Institute of Yunnan Academy of Agricultural Sciences conducted a survey and collection for 14 days in 4 cities of the region from May 9 to May 22, 2020. Four cities, Xingyi, Xingren, Qinglong and Pu'an, were selected as the main collection areas, and a total of 92 wild sugarcane resources were collected. We collected 6 materials of Erianthus rockii, 16 of Sacchuram spontaneum, 25 of Micanthus sinensis, 13 of Erianthus arundinacius and 32 of Erianthus fulvus. The results revealed that there were abundant phenotypic variation in the species collected from this region with variation coefficient ranging from 11.4% to 78.0% and the average over 30%. Cluster analysis showed that Sacchuram spontaneum group Ⅲ (Sp-2), Micanthus sinensis Group Ⅱ (Ma-8), Erianthus arundinacius Group Ⅲ (Ea-2, Ea-9), Erianthus fulvus Group Ⅲ (Ef-10, Ef-11), Erianthus fulvus Group Ⅴ (Ef-26) and Erianthus rockii (Er-1, Er-3, Er-4) had good yield and quality characters, and were recommended to be used as sugarcane breeding materials in further research. The germplasm collections changed the situation of CNNSGR collection system without collections from southwest Guizhou Autonomous Prefecture, and some specific materials had unique excellent characters that other wild sugarcane resources did not have, which might serve as the genetic resources for sugarcane breeding.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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