Studies on Commercial Technique of Carbon Dioxide Gas to Overcome Self-incompatibility in Cabbage
Hsing, M. H., S. S. Wang, D. L. Lin and R. H. Wang
This study was attempted to develop a method to overcome self-incompatibility in cabbage for seed production. Cabbage seedlings (K-Y cross) were vernalised in a growth chamber programmed for 1000 lux. of 16-hrs alternate light period at 5℃ for 45 days. The plants then were grounded in the green house. At the flowering stage the plants were pollinated with honey-bee for 2 weeks. In this period, the plants were treated with CO2 gas at 3% or 5% level every other day for 7 times from 6:00 pm to 9:00 am. Results indicated that the plants treated with 3% and 5% in average produced 0.73 and 0.79 seed per silique comparing to that of 0.32 seed per silique in the treatment without CO2 gas. Though it is breakthrough out it still can not be need for commercial production of cabbage seed. Further studies are needed.
Key word: Cabbage, Self-incompatibility, Seed-production, Carbon dioxide
Accepted for publication: 23 Apri1, 2003