Study on Factors Affecting Embryo Rescue of Seedless Grape

Study on factors about embryo rescue of seedless grapes with ovules of'Delight'self-pollination,'Dalihong seedless'self-pollination,'Ruby seedless'×'Xinyu' and 'Emerald seedless'×'Black olimpia'.The results showed that,(1) germination percentage of'Delight'self-pollination and 'Ruby seedless'×'Xinyu'ovules with dissected treatment was 11.4% and 10.0%,respectively,which was higher than that with cutting transversely treatment(5.5% and 0.6%,respectively);(2)Germination percentages of 'Dalihong seedless'self-pollination and'Ruby seedless'×'Xinyu' embryos were 9.5%,5.6%,respectively,and embryogenesis percentage of their embryoids were 6.3% and 3.9%,respectively after cultured on Nitsch medium,which were higher than that on ER medium;The results showed that it is easy for embyos of seedless grapes to germinate with dissected treatment.It is easier for embryos of seedless grapes to germinate and form embryogenesis with Nitsch medium than with ER medium.Percentages of embryo germination were discrepant because of different parental ploidyies,the order is seedless diploid self-pollinationseedless diploid×seeded diploidseedless diploid×seeded tetraploid grapes.