Andromonoecy in Gynandropsis gynandra (L.) Briq. (Cleomaceae) and effects on fruit and seed production

Herbaud P.F. Zohoungbogbo, Carlos A. Houdegbe, Dêêdi E.O. Sogbohossou, Monique G. Tossou, Patrick Maundu, Eric M. Schranz, Allen Van Deynze, Jeanne Zoundjihekpon, Enoch G. Achigan-Dako*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Spider plant (Gynandropsis gynandra) is a traditional leafy vegetable widespread in sub-Saharan Africa and tropical Asia that is also valued for its medicinal properties. Developing a breeding program for the species requires detailed knowledge of its phenology, floral morphology and pollination system. This study investigates the effects of floral morphology and pollination mechanisms on the reproductive success in G. gynandra. The experiments were conducted in two locations in Benin. A split-plot design was used with four randomized complete blocks. Three accessions were randomly assigned to the whole plots and five treatments including natural self-pollination, hand self-pollination, geitonogamy, open pollination and hand cross-pollination were randomized over the sub-plots. We observed that individual plant exhibited 70% of staminate (male) flowers and 30% of hermaphrodite flowers. G. gynandra was andromonoecious. Open pollination and hand cross-pollination led to higher fruit and seed set. Natural self-pollination and hand self-pollination resulted in lower fruit and seed production. G. gynandra is a self-compatible and predominantly out-crossing species. Cross-pollination resulted in a significant increase in fruit set. This study set the ground for the development of improved cultivars in G. gynandra.

Original languageEnglish
Pages (from-to)2231–2239
JournalGenetic Resources and Crop Evolution
Volume65
Issue number8
Early online date4 Sep 2018
DOIs
Publication statusPublished - Dec 2018

Keywords

  • Andromonoecy
  • Anthesis
  • Gynandropsis gynandra
  • Hermaphroditism
  • Pollination systems

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    Zohoungbogbo, H. P. F., Houdegbe, C. A., Sogbohossou, D. E. O., Tossou, M. G., Maundu, P., Schranz, E. M., Van Deynze, A., Zoundjihekpon, J., & Achigan-Dako, E. G. (2018). Andromonoecy in Gynandropsis gynandra (L.) Briq. (Cleomaceae) and effects on fruit and seed production. Genetic Resources and Crop Evolution, 65(8), 2231–2239. https://doi.org/10.1007/s10722-018-0687-5