Korean Journal of Agricultural Science (농업과학연구)

Institute of Agricultural Science, CNU (충남대학교 농업과학연구소)
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Characteristics of lateral bud development, necrosis and genesis of flower primordium in 'Kyoho' grapevines

  • Park, Jun Young (Department of Plant Science and Technology, Chung-Ang University) ;
  • Jung, Myung Hee (Department of Plant Science and Technology, Chung-Ang University) ;
  • Kim, Bo Min (Department of Plant Science and Technology, Chung-Ang University) ;
  • Park, Yo Sup (Citrus Research Institute, National Institute of Horticultural & Herbal Science, RDA) ;
  • Kim, Jun Hyeok (Wild Plant Seed Research Division, Baekdudaegan National Arboretum) ;
  • Park, Hee-Seung (Department of Plant Science and Technology, Chung-Ang University)
  • Received : 2020.07.01
  • Accepted : 2020.11.17
  • Published : 2020.12.01
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Abstract

This study investigated the effective harvest of 'Kyoho' grapevines by examining their characteristics including bud development, necrosis types and flower primordium formation. The size of the axillary bud did not show any difference in the 5th node or more, but it was smaller because it was closer to the base in the 4th node or less. In the 1st node, the rates of main bud necrosis (MBN), accessory bud necrosis (ABN), and whole bud necrosis (WBN) were high, and the rate of flower primordium formation was low, but there was no significant difference in the other nodes. Therefore, it was expected that using other nodes than the 1st node would be advantageous to secure production. Because the growth progresses after sprouting, the main bud necrosis rate increases, showing a very low flower primordium formation rate in March of the following year. Therefore, a method is needed to increase the storage nutrients in the winter and the rate of flower primordium formation after March. This study found that the thickness of the shoots should be less than 8.5 mm between the 3rd and 4th nodes, and the length should be less than 60 cm for nodes up to the 10th node.

Keywords

Acknowledgement

본 연구는 농촌진흥청 공동연구사업(과제번호: PJ013431042020)의 지원에 의해 수행되었습니다.

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