Studies on Pollination and Bear Fruit of Pingxiangli(Pyrus ussuriensis)

WANG Qiang1,ZHANG Mao-jun1,YAN Xing-kai1,DING Li-hua1,XING Guo-jie2(1.Fruit Research Institute,Jilin Academy of Agricultural Sciences,Gongzhuling,Jilin 136100,China;2.Biological Research Institute,Jilin Academy of Agricultural Sciences,Gongzhuling,Jilin 136100,China)

Pingxiangli(Pyrus ussuriensis);Pollination;Effective pollination of period;Pollination metaxenia

The experiment studied different periods of time collecting pollen vigor,self-pollination pollen germination and pollen tube growth in style with performance-pollinated varieties of Metaxenia on fruit quality.The Pingxiangli tree were used in the experiment.The main results were followed:The Pingxiangli flowers different time gathering pollen vigor difference was big,the inflorescence separation time was 8.64%,the flower bud time was 9.01%,the big flower bud time was 31.09%.The effective pollination period of Pingxiangli was 6 days,the stigma accepted pollen ability to 9 days.Pingxiangli self-pollination,pollen germination in the face stigma,the normal tube growth.The central tube growth style changed to stop the growth of pollen tube tip enlargement,can not reach the embryo sac and the completion of the process of fertilization.The Pingxiangli used pollination of the different variety Metaxenia obvious role.In the fruit index,SSC,the calyx escapes rate,percentage of flowers which actually became fruit aspects and so on,the existence of the phenomenon Metaxenia.