Male and female sterility in diploid plants obtained from Muscat Bailey A grape

• Author(s): Heo, Kweon; Jeong, Cheon; Kim, Jong; Park, Sung; Wakana, Akira;
• Abstract: Two diploid plants, BRi9211 and BRi9214, obtained from the cross of Muscat Bailey AXRizamat 4x, the male and female sterility of these two were examined. In self-pollination of BRi9211 and BRi9214, the berries of clusters contained no seed. The rate of pollen germination on the agar medium was also 0%. In cross combinations of BRi9211 with diploid cultivars, the rates of seeded berries ranged from 9.4% to 25.8%. Most of the ovules in BRi9211 had well-developed embryo sac with polar nuclei and an egg. From this cross combinations, 21 out of 82 seeds germinated were all diploid seedlings with chromosome number of 38. Seeded berries of cluster in BRi9214 were observed only in cross between Sekirei and Muscat Bailey A (1.2% and 0.9%), and not in the other two cross combinations. In most of BRi9214, degenerated embryo sac was observed in the ovule. From this cross combinations, one out of five seeds germinated was tetraploid seedling with chromosome number of 76. GA3 treatment promoted the growth of berries in the BRi9211 and BRi9214, and increased the cluster weight and berry set.
• Publication Date: Aug 2002
• Journal: Journal Of The Korean Society For Horticultural Science