Study On Investigations And Heredity Characters Of Germplasm Resource Of Siberian Apricot In Subarid Area

Germplasm is important material to fundamental research of genetics, systematics, biology et al as well as to new species selection and breeding. Study on investigations and hereditary characters of germplasm resource of Siberian apricot with combining of general selection and individual tree inquiry in subarid area has been conducted for 2 years. The results show that the resource is abundant in subarid area. 9 major quantitative characters including pistil development level, young shoots length, fruit weight, rate of kernel, kernel weight, pericarp width, almond weight, rate of almond, almond index can distinguish germplasm resource; 20 variations were observed in tree morphology, flower, leaf, fruit, kernel, almond and resistance ability, bodying in 50 representative plants. These variations are Flat crown SA, Divergent SA, Pink SA, Big flower, Late florescence SA, Fold flowerSA, Double pistil SA, Mutiplicate flowerSA, Perfect pistil SA, Cardiac leaf SA, Red spot pericarp SA, Big kernel SA, Median kernel SA, Small oblate kernel SA, Small drum SA, Finned kernel SA, Sweet almond and fruit SA, Sweet almond and bitter fruit SA, double almond SA, Flower of Frost-resistant SA. Crown has the highest correlation to fruit yield among morphological factors of Siberian apricot.The check indice of the abundant bearing and late florescence, which were ascertained by relative research and Siberian apricot personality, are 100 fruitsper m2 crown and postponing 6 days of full flower period respectively. 44 abundant yield and 8 late florescence plants has been picked out from 2002 to 2003. 14 and 16 classifications have been obtained using peroxidase isoenzyme of leaf and soluble seed protein respectively by PAGE(polyacrylamide gel electrophoresis) in experiment material, which proved there exist hereditary diversity among the abundant bearing and late florescence plants. POD and soluble seed protein are classificayion indice for classification results with 2 biochemical index are consist with morphological characters and biological characters.