Effects of different pollen sources on fruit setting and fruit quality of Kiyomi

To study the effects of different pollen sources on fruit setting and fruit quality,Shatangju tangerine,Xinhui sweet orange,Olinda valencia orange and Star Ruby grapefruit were selected as male parents and Kiyomi tangor as female parents for hybridization,and Kiyomi tangor self-pollination as the control.The results showed that the fruit setting rate of cross-pollination was ranged from 17.5%～25.7%,while the control was 11.3%.The fruit weight was 262.7～341.8 g in hybrid pollination and 331.3 g in the control,the fruit shape index was 0.76～0.79 and 0.73,the total soluble solids(TSS) was 10.3%～ 11.0% and 10.2%,the peel thickness was 0.39～0.45 cm and 0.43cm,the seeds number per fruit was 6.3～37.8 and 13.7,edible ratio was 72.3%～76.4% and 73.1%,citric acid was 0.69～0.74 g and 0.77 g(100 mL juice),Vc was 34.4～37.9 mg and 37.8 mg(100 mL juice),reducing sugar content was 3.97～4.35 g and 4.19 g(100 mL juice),sucrose content was 4.51～4.85 g and 4.13 g(100 mL juice),respectively.Based on the Duncan’s multiple range tests,four cross-pollinations increased significantly fruit setting rate,obviously influenced seeds number,fruit weight,fruit shape index and sucrose content,indicated the distinct pollen xenia.However,there were no obvious effects on TSS,peel thickness,edible ratio,citric acid,Vc and reducing sugar content.