Investigation on the litchi germplasm resources in the lower reach of Minjiang river of China
Litchi(Litchi chinensis Sonn.) germplasm resources of the Minjiang valley in China were investigated from 2006 to 2010.The results demonstrated that ancient litchi trees were distributed along the Minjiang river and its tributaries like Qingyijiang and Dadu river from latitude 29°05' N to 29°48' N and the elevation from 340 m to 600 m above the sea level.The ages of the all ancient litchi trees are over 100 years.According to the shapes of the exocarp,the germplasms can be identified as 6 types including the protruding and hard protuberances,the hairlike protuberances and the smooth protuberances.The average fruit mass of different types is from 9.2 g to 25.5g,The range of edible ratio is 44.3% to 72.5%.The mature time is from late June to middle July.The fruit shapes are of the round,the heart and the ellipse and so on.The color of the fruit includes red,green,pink-red and other complex colors.These ancient litchi trees with some diversity are important resources both in biology and culture.
Litchi(Litchi chinensis Sonn.)Germplasm resourceInvestigationMinjiang River