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《Journal of Fruit Science》 2007-04
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Study on the pollination compatibility among the wild types and cultivars of Pyrus ussuriensis

ZHANG Mao-jun1,2,LI Bao-jiang1,WANG Qiang2,DING Li-hua2,YAN Xing-kai2,XING Guo-jie2(1College of Horticulture,Shengyang Agricultural University,Shenyang Liaoning 110161 China;2Fruit Research Institute,Jilin Academy of Agricultural Sciences,Gongzhuling,Jilin 136100 China)  
A total of 32 materials of Pyrus ussuriensis Maxim were used for studying their pollination compatibility.Results showed about 53% percent of them were male sterile.The difference of pollen viability in normal cultivars was remarkable.The viability of the pollen collected from the cultivars grown in greenhouse was less than that collected from the field.Nanguoli,Pingxiangli,Hanxiangli and so on,nearly all of cultivars and wild types were self-incompatibility,except Honghuagai cultivar which could bear fruit after self-pollination,without normal seeds in these fruit.Longxiang cultivar had some self-compatibility.Pollination at pre-flowering stage could improve the bearing rate of some cultivars of self-incompatibility,but no effect noticed doing it 3 days after flowering.Crosses made between the maternal cultivars and their F1 generation pedigree appeared mostly compatible.The crossing compatibility between Nanguoli and Hanhongli exhibited unilateralism,but no bearing was observed in Hanhongli × Nanguoli.It was believed that it might be related with S gene of parentage cultivars.Crosses made between bud mutation cultivars and female parentage were incompatible.It is concluded that P.ussuriensis Maxim have the characteristic of SI,the bearing rate of self pollination of part cultivars and wild types could be improved by self crossing at pre-blossom stage,and pollination between bud mutation cultivars and female parentage couldn’t be bearing.
【CateGory Index】: S661.2
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