无核葡萄杨格尔的胚发育及胚珠培养

早熟无核葡萄杨格尔的胚珠可正常受精。绝大多数受精旺在花后27～33天开始败育,仅个别胚可继续发育至大球形胚甚至心形胚。当胚发育最为充分而又尚未败育时取胚珠进行培养,存活胚的比例较高。胚珠培养的培养基内附加低浓度秋水仙碱对无核葡萄胚珠内胚的离体发育有良好的促进作用。胚珠培养萌发成苗的技术尚需要进一步系统的研究。

STUDIES ON THE EMBRYO DEVELOPMENT AND IN OVULO EMBRYO CULTURE OF SEEDLESS GREPE VARIETY ''''YOUNGLE''''

The ovules of early-ripening seedless grape 'Youngle' can be fertilized normally. Most of the fertilized embryos began to abotive 27-33 days after anthesis. Only a few embryos could develop to large globular embryos and heart embryos. When embryos developed fully and did not abortive, ovules might be cultured, and percentage of the viable embryos was higher. The medium of in-ovulo embryo culture supplemented with low concentration of colchicine had a good tunction on in vitro embryo development. The technique of embryo germinating into seedling need study more systematically.