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The History, Culture, Utilization, Germplasm Diversity and Research Advances of Begonia grandis Dry

 

Begonia grandis Dry. has a long history in cultivation and Chinese literature due to its high values as an ornamental, medicinal, edible and cultural plant. This species is the most northerly distributed, strongest cold-resistant, the only species developing tubers in leaf axils on aerial stems and one of the widest distribution taxa in Begoniaceae. Therefore, it is especially of importance in scientific research. However, the distribution, germplasm and conservation status of this species have not been well understood before, and its intraspecific classification remains questionable.

In order to better understand, protect and utilize B. grandis, scientists of Ornamental Plant Resources, Germplasm Innovation and Utilization research group in Chenshan Botanical Garden,Shanghai (CBGS) made a thoroughly investigation of history, culture, utilization, classification, distribution, germplasm diversity, intraspecific taxonomical status and research advances on this species, their published studies show that B. grandis is only native to China but has been widely naturalized in Japan. The altitude of its native distribution is from ca. 75 mto3400 m. The lowest location is at Shanjuandong of Jangsu Prov., and the highest is Haba Snow Mountain of Yunnan Prov. The distribution longitude ranges from 97˚27'34''E to 121˚47'15''E, and the latitude from 22˚59'19''N to 40˚40'05''N. Hekanzi Binggou in Lingyuan County of Liaoning Prov. is the northern boundary, and Pingbian County of Yunnan is the southern boundary; Chawa Long Qin Nathon in Chayu County of Tibet is the most western boundary, and Tiantong National Forest Park in Ningbo of Zhejiang is the eastern boundary.

Moreover, to solve this issue of intraspecific taxa of B. grandis, which were not reasonably defined based on Flora Republicae Popularis Sinicae and Flora of China, and the existing criteria don’t work in practice of identification, the research group conducted a comprehensive morphological and molecuar study on the intraspecific diversity and scientific classification on B. grandis and related studies were published in the journal Botanical Research last june(June 17, 2014)

http://www.hanspub.org/Journal/PaperInformation.aspx?paperID=13621#abstract

 
 
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