A Preliminary Survey on Fruit Traits of 28 Wild Mulberry Germ-plasm Resources in Yunnan Sericutural Area

Li Pingping;Jiang Ya;Ran Ruifa;Chu Yining;Su Rui;Chen Song;Institute of Sericulture and Apiculture,Yunnan Academy of Agricultural Sciences;

Wild mulberry germplasm resources;;Fruit traits;;Fruit setting rate;;Fruit length;;Sugar degree;;Red pigment

In order to explore excellent mulberry germplasm resources for fruit use,in present study we investigated and measured the agronomic characters( fruit setting rate,single bud fruit number,single fruit weight,fruit length and fruit width) and physicochemical properties related to fruits( sugar degree,p H value,mulberry red pigment content,and juice yield) of 28 wild mulberry germplasm resources conserved in sericutural areas of Yunnan Province. The results demonstrated that 14 of the 28 wild mulberry germplasm resources had over 85% fruit setting rate,2 had over 3 g single fruit weight,and 7 had over 20% sugar degree in fruit juice. Among the28 wild mulberry germplasm resources belonged to 6 mulberry species,3 germplasm resources of Morus bombycis Koidz. were typified by having high fruit setting rate and high red pigment content in mulberry fruit. In addition,a prominent fruit length and high sugar degree existed in 8 germplasm resources of Morus laevigata Wall. and in 4 germplasm resources of Morus wittiorum Hand-Mazz.. Our present work identifies a number of excellent wild mulberry germplasm resources for fruit use,which can be used for production or for breeding superior fruit-use mulberry varieties.