山梨优良品系的选择

Selection on Superior Strains of Pyrus ussuriensis

2012～2013年，对山梨园中不同品系山梨进行了果实大小、单株结果产量、石细胞含量、出汁率、可溶性固形物含量、可溶性糖含量等指标的测定和评价。结果表明：初选的12个品系22株山梨个体中，有8个品系12株山梨个体在1个或多个果实性状指标上表现比较突出。具有较好鲜食品质的有YS10‐5、YS15‐1、YS15‐2、YS11‐2；具有较好加工品质的有YS6‐8、YS6‐9、YS10‐5、YS15‐1和YS15‐2；具有较高产量的有YS6‐9、YS11‐5、YS10‐5、YS15‐1、YS9‐2、YS13‐6、YS13‐4、YS14‐2、YS14‐5、YS8‐4和YS7‐6；具有果个大且品质好的有YS10‐5、YS11‐2、YS11‐5和YS15‐1。通过模糊数学隶属函数对12个品系22株山梨个体综合评判，有6个优良品系9株优良单株果实各项指标隶属函数均值较大，从大到小依次为 YS10‐5、YS11 YS11‐5、YS9‐2、YS15‐1、YS14‐5、YS11‐2、YS6‐9、YS10‐2和YS15‐2，其隶属函数均值范围为0．5068‐0．8335。

In 2012‐2013 ,fruit size ,individual plant production ,sclereid content ,juice yield ,soluble solids content , soluble sugar content of selected Pyrus ussuriensis .were measuremented and evaluated .Results show that 12 indi‐viduals in 8 strains of Pyrus ussuriensis .selected from 22 individuals in 12 strains on one or more characters were best .YS10‐5 ,YS15‐1 ,YS15‐2 ,YS11‐2 have good table qualities ;YS6‐8 ,YS6‐9 ,YS10‐5 ,YS15‐1and YS15‐2 Have good processing qualities ;YS6‐9 ,YS11‐5 ,YS10‐5 ,YS15‐1 ,YS9‐2 ,YS13‐6 ,YS13‐4 ,YS14‐2 ,YS14‐5 , YS8‐4 and YS7‐6 have high yield ;The fruits of YS10‐5 ,YS11‐2 ,YS11‐5 and YS15‐1 were large and good quali‐ties .Through individual comprehensive evaluation by fuzzy membership function on 22 individuals in 12 strains , there are 9 superior individual in 6 superior strains ,its mean of membership function the were large ,from big to small in turn were YS10‐5 ,YS11 ,YS11‐5 ,YS9‐2 ,YS15‐1 ,YS14‐5 ,YS11‐2 ,YS6‐9 ,YS10‐2 and YS15‐2 ,the mean range of membership function was 0 .5068‐0 .8335 .