Development and interaction between plant architecture and yield-related traits in winged bean (Psophocarpus tetragonolobus (L.) DC.)

Tanzi, Alberto Stefano; Ho, Wai Kuan; Massawe, Festo; Mayes, Sean

Abstract

Winged bean (P. tetragonolobus (L.) DC.) is a leguminous crop that could contribute towards food security in tropical areas, but whose growth and development is still poorly understood. In order to develop improved individuals for increased green pod and seed productivity, we investigated the factors involved in winged bean plant architecture, development, and their link to a number of yield-related traits. An F2 population was generated from the cross between M3 and FP15 Malaysian accessions and assessed under field conditions in Malaysia. The results showed stem length to be mainly influenced by internode length (rs = .80; p \.01), while multiple genes could be controlling the number of branches, with an average number of branches in the offspring above the highest parent value. The average length of branches appeared to influence the most the final
number of pods per plant (rs = .44; p\ .001), while flowering showed potentially transgressive segregation towards earliness, without preventing the potential development of high pod-yielding individuals (rs = - 208; p = .056). Taken together, the results reported here shed light on the interaction between morphological, developmental, and yield-related traits, defining potential targets for developing crop ideotypes to direct breeding programmes for this underutilised crop.

Citation

Tanzi, A. S., Ho, W. K., Massawe, F., & Mayes, S. (2019). Development and interaction between plant architecture and yield-related traits in winged bean (Psophocarpus tetragonolobus (L.) DC.). Euphytica, 215(2), 1-14. https://doi.org/10.1007/s10681-019-2359-8

• Journal Article Type: Article
• Acceptance Date: Jan 22, 2019
• Online Publication Date: Feb 1, 2019
• Publication Date: 2019-01
• Deposit Date: Feb 6, 2019
• Publicly Available Date: Feb 6, 2019
• Journal: Euphytica
• Print ISSN: 0014-2336
• Electronic ISSN: 1573-5060
• Publisher: Springer Verlag
• Peer Reviewed: Peer Reviewed
• Volume: 215
• Issue: 2
• Article Number: 36
• Pages: 1-14
• DOI: https://doi.org/10.1007/s10681-019-2359-8
• Keywords: Winged bean; Psophocarpus tetragonolobus; Plant breeding; Plant development; Plant architecture; Yield
• Public URL: https://nottingham-repository.worktribe.com/output/1524133
• Publisher URL: https://link.springer.com/article/10.1007/s10681-019-2359-8
• Contract Date: Feb 6, 2019