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Investigations and Collections of Wild Germplasm Plants Related to Sugarcane in China

He Shunchang;Yang Qinghui;Xiao Fenghui;Zhang Fachun;He Lilian(Sugarcane Resources Laboratory,Yunnan Agricultural university,Kunming 650201)  
More than 15 investigations and collections of wild plants related to sugarcane have been carried out by our laboratory during 1985 to 1993 for basic breeding uses and the other purposes in 21 provinces,municipalities and autonomous regions of China covering Yunnan,Sichuan,Tibet, Guizhou,Shanxi,Gansu,Hebei,Beijing,Henan,Shandong,Jiangsu,Anhui,Shanghai,Hunan,Hubei,Zhejiang,Fujian,Jiangxi,Guangdong,Guangxi and Hainan,where a total of 824 clones which respectively belong to 9 genera and 19 species under subgarsugarcane(Saccharaea)were collected.Some clones of S.spontaneum and E.fulles had very high brix up to 20-22% under wild conditions.The geographic distribution,morpholosical characters,flowering time,reproductive way,ecological adaptability and germplasm erosion of wild species under Saccharum,Ertanthus,Narenga and Miscanthus in the mainland and Hainan island of China have been survied.It has been revealed that there were not only corelations between flowering time and the origin altitiude and latitude where S.spontaneum and S.arundinaceus grow but also connection between the stalk brix and the geographic distribution of S.spontaneum and E.fulvus.
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