Cowpea leaf width correlates with above ground biomass across diverse environments

Digrado, Anthony and Gonzalez-Escobar, Emmanuel and Owston, Nicole and Page, Rhiannon and Mohammed, Saba Baba and Umar, Muhammad Lawan and Boukar, Ousmane and Ainsworth, Elizabeth A. and Carmo-Silva, Elizabete (2022) Cowpea leaf width correlates with above ground biomass across diverse environments. Legume Science. ISSN 2639-6181

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Abstract

Cowpea (Vigna unguiculata [L.] Walp.) yields within the dry savannahs of Sub-Saharan Africa are low. Given the contribution of cowpea to food security in this region, it is essential that high-yielding varieties are developed to improve crop productivity in a sustainable manner. Identifying morphological or physiological traits that correlate with biomass could assist breeders with rapid screening of diverse germplasm. This study investigated 23 diverse Nigerian cowpea lines in an environmentally controlled greenhouse and 50 diverse lines from a Multiparent Advanced Generation Intercross (MAGIC) population in the field to identify easily measurable traits associated with high above ground biomass. Correlation analyses found that leaf traits were significantly and positively correlated with above ground biomass, and the leaf width of the youngest fully expanded leaf was the best indicator of biomass yield. Analysis of variance identified significant differences among the genotypes for all measured traits, indicating that there is genetic variation among these varieties and opportunity for selection. These results from the greenhouse and the field indicate that the leaf width of the youngest fully expanded leaf can be used to rapidly select cowpea lines with high biomass production potential.

Item Type:
Journal Article
Journal or Publication Title:
Legume Science
Subjects:
ID Code:
167833
Deposited By:
Deposited On:
22 Mar 2022 09:55
Refereed?:
Yes
Published?:
Published
Last Modified:
04 May 2022 02:48