Sex Expression of Staminate Cluster as Affected by Pinching the Main Shoot, Defoliation and N6- benzylaminopurine in Monoecious Cucumber

Authors

  • Kanapol Jutamanee Lab. of Horticulture, Faculty of Agriculture, TohokuUniversity, Sendai 981 Japan.
  • Takashi Saito Lab. of Horticulture, Faculty of Agriculture, TohokuUniversity, Sendai 981 Japan.
  • Kouki Kanchama Lab. of Horticulture, Faculty of Agriculture, TohokuUniversity, Sendai 981 Japan.
  • Kiyotoshi Takeno Lab. of Horticulture, Faculty of Agriculture, TohokuUniversity, Sendai 981 Japan.
  • Suranant Subhadrabandhu Dept. of Horticulture, Faculty of Agriculture, Kasetsart University, Bangkok 10900 Thailand.

Keywords:

sex expression, pinching, defoliation, N6-benzylaminopurine, cucumber

Abstract

Effects of pinching the main shoot, defoliation and N6- benzylaminopurine (BA) on sex expression in cucumber were investigated by using a qualitative cucumber, cv.. Sagami-hanjiro. Pinching main shoot induced development of bisexual, pistillate flowers and lateral shoots. Direct application ofBA to the staminate cluster at node 4 or 7 induced pistillate flower development only on that cluster, especially on that at the node 4. The defoliation by allowing one leaf remained in the plant decreased the total numbers of flower of all sexes. However, the defoliation with one leaf remaining at node 4 or 7 gave the same total numbers of staminate, bisexual, pistillate flowers and lateral shoots when compared with those at the corresponding nodes in the control plants. The reduction of leaf area to half or quarter had no effect on the total numbers of staminate and bisexual flowers, but this method decreased the total numbers of pistillate flowers.

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Published

1993-09-30

How to Cite

Kanapol Jutamanee, Takashi Saito, Kouki Kanchama, Kiyotoshi Takeno, and Suranant Subhadrabandhu. 1993. “Sex Expression of Staminate Cluster As Affected by Pinching the Main Shoot, Defoliation and N6- Benzylaminopurine in Monoecious Cucumber”. Agriculture and Natural Resources 27 (3). Bangkok, Thailand:347-53. https://li01.tci-thaijo.org/index.php/anres/article/view/241574.

Issue

Vol. 27 No. 3 (1993): July-September

Section

Research Article

License

online 2452-316X print 2468-1458/Copyright © 2022. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/),
production and hosting by Kasetsart University of Research and Development Institute on behalf of Kasetsart University.