Location: Tropical Crops and Germplasm Research
2011 Annual Report
Budwood of 32 accessions of citrus was distributed to the Guanxi SubTropical Crops Research Institute from the USDA-ARS National Clonal Germplasm Repository for Fruit and Nut Crops at Riverside, California.
Two molecular marker systems, SCoT (start codon targeted polymorphism) and ISSR (inter-simple sequence repeat) were used for identification and genetic comparison analysis of 23 mango germplasm accessions collected within the Guangxi province of China. Results indicated that the SCoT analysis better represents the actual relationships than ISSR analysis, although both analyses give similar results. The results also demonstrate that the SCoT marker system is useful for identification and genetic diversity analysis of mango cultivars. This is the first study employing SCoT marker to estimate the genetic diversity of Xiang Ya Mango type, and the first comparative analysis between SCoT and ISSR markers.
This project was monitored through visits to laboratories and by communications with collaborators by phone and emails.