云南秋海棠属植物资源调查研究

 通过对云南秋海棠属植物资源的野外调查采集和引种栽培研究, 归纳概述云南秋海棠属植物的地理分布、形态特征、观赏性状及其栽培特性, 为种质资源保存和有性杂交育种, 以及进一步合理开发利用资源提供依据。

Summarization of Begonia Resources from Yunnan Province

Based on the studies of literatures, field investigation, introduction and cultivation on the genus Begonia Linn. in Yunnan, the geographical distribution, basic morphological characteristics, ornamental values and their cultural characters were summarized in this paper. It was indicated that Yunnan is very rich in Begonia resources. There are 101 species (subspecies and varieties) of Begonia were recorded in Yunnan. Among them, 72 species are endemic to Yunnan. Begonia is widely distributed in the whole province but its natural distribution center is located at SE Yunnan The lowest altitude of its distribution of the genus in Yunnan is only 90m and the highest altitude is 3400 m above sea level. Among the known species from Yunnan, 50 species are rhizomatous Begonia, 28 species are erect stemmed Begonia and 23 species are tuberous Begonia. The distribution of rhizomatous Begonia is from 90 m to 3000 m. This type of Begonia requires relatively higher temperature and moisture in cultivation and many species are suitable for pot plant for foliage ornamental purpose. The erect stemmed Begonia is distributed from 100 m to 3200 m and requires high temperature and moisture in cultivation. They are suitable for pot and bed plants. The distribution of tuberous Begonia is from 720 m to 3400 m. Most species of tuberous type of Begonia don't require higher temperature and moisture in cultivation and they are suitable for pot plant and breeding purpose.