AdaptationTrial for Kyoho Grapevines in Southern Taiwan
|Keywords:||葡萄;修剪;萌芽;芽體分化;葡萄產業研究與發展研討會專集;grape;pruning;budbreaking;bud differentiation;Proceedings Of A Symposium On Grape Industry Research And Development||Issue Date:||Dec-1988||Publisher:||台中：農業試驗所||Start page/Pages:||42-50||Source:||葡萄產業研究與發展研討會專集:||Abstract:||
Comparison with the central Taiwan, the potential for harvesting fruit earlier to meet the market needs in southern Taiwan is due mainly to the warm and dry climate conditions during winter season. Therefore, farmers tried to grow grapevines at Kaohsiung and Pingtung areas ten more years ago. However, the yield was low because of lower percentages of bud breaking and fruiting shoot, smaller clusters, and serious disease injuries which then caused the changing of planting locations and acreages within these areas. To investigate the causes for lower yield and hence to provide solutions, a series of trials on pruning and dormant bud breaking were conducted.
Results showed that pruning starting from mid-October to January of next year, harvested between February and June, can produce good quality Kyoho grapevines (V. vinif era L. x V. labrusca Bailey) with 16 degree of brix for soluble solid. However, the yield was unstable. In the trials for breaking dormant bud, concentration of ethylene chlorohydrin required for breaking dormant bud in early January was higher than that in late January. The latter had a higher bud breaking percentage also. The progressive development of bunch primordia of buds on shoots pruned at early February was also studied. Both of the number and size of bunch primordia were increased as the growth stage proceeded. The development of bunch pri- mordia was steady begining from 60 days after full blooming. Well-differentiated buds which had higher fruiting potential were found from 6th to 18th nodes.
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