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KMID : 1098420050130060234
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Korean Journal of Medicinal Crop Science
2005 Volume.13 No. 6 p.234 ~ p.240
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Pollen Characteristics of Flower Type and Cross Compatibility with Table Grape in Vitis amurensis Rupr.
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Park Young-Sik
Kim In-Jong
Jeong Byung-Chan
Heo Jae-Yun
Park Sung-MIn
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Abstract
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This study was conducted to identify cross compatibility with table grape and pollen characteristics by flower type in Vitis amurensis Rupr. (GW-22, GW-45, GW-56, GW-200, GW-202 and GW-300) collected in Gangwon area. Flower structure, germinability and morphology of pollen, and cross compatibility with table grape were examined. Flowers of GW-22 and GW-56 had an aborted gynoecium and five erect fdaments, and all of them was male. The percentage of pollen germination of GW-22 and GW-56 on the agar medium was 27.6-29.8%. Flowers of GW-45, GW-200, GW-202 and GW-300 had well-developed pistils and five stamens with curled filaments. The percentage of pollen germination of female plant on the agar medium was 0%. Pollen grail)s from GW-22 and GW-56 (male flower) have symmetrically distributed three furrows on their surface and each furrow contains a germ pore at the equatorial level (Tricolporated). GW-45, GW-200, GW202, and GW-300 (Female flower) produced pollen grains with no germinative structures (acolporated). In self-pollina-tion of female flowers, berries of clusters were no berry and no seed. Therefore, flower structure in V. amurensis proved to be that of other dioecious Vitis species. In cross combination of female and male flower of V. amurensis made normal seeds. In cross combination of table grape and V. amurensis of male flower made normal seeds. But, in cross combination of female flower of V. amurensis did not make seeds. Therefore, V. amurensis was cross compatible with vitis spp, and V. amurensis varieties may contribute to breeding studies of Vitis spp.
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KEYWORD
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V. amurensis, dioecious, flower morphology, pollen germination
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