Research Article
Genotypic Variation for Phosphorus-use Efficiency Characteristics in Faba Bean (Vicia faba L.)
Issue:
Volume 13, Issue 3, September 2025
Pages:
108-123
Received:
4 February 2025
Accepted:
22 May 2025
Published:
30 June 2025
DOI:
10.11648/j.plant.20251303.11
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Abstract: Developing phosphorus-use efficient faba bean (Vicia faba L.) genotypes is crucial for ensuring sustainable production in low phosphorus soils. The present study was conducted with the objective of identifying faba bean genotypes that use P efficiently. Twenty genotypes of faba bean in the field and 12 genotypes in the greenhouse were planted under two P fertilizer regimes (0 and recommended, 46 kg/ha). Withholding P fertilizer (0 kg/ha) application has significantly affected the performance of PUE traits; with decreasing effect ranging from 13.8% for grain yield (GY) to 38.6% for biomass phosphorus uptake (BPU) and increasing effect ranging from 5.9% for phosphorus harvest index (PHI) to 305.6% for PUE. Difference among the genotypes for most PUE traits were highly significant (P<0.01) under both P fertilizer regimes. Genotypes Moti, Gebelcho, and CS20DK in the field; Hachalu, Gebelcho and Dosha in the greenhouse, were efficient responder (ER) and had statistically higher mean for most PUE traits. Most traits including PUE had moderately high (60-79%) heritability. Biplot analysis showed that PUE, GY, BPU, and PUpE contributed the highest genetic divergence indicating their importance in breeding. Correlation analysis revealed that PUE was positively correlated to most traits including GY. It was shown that PUE and GY were strongly correlated to PUpE than they were to PUtE; suggesting that PUpE was more critical than PUtE for PUE variation. Findings of the study could be used to screen genotypes which have higher PUE and use them for breeding new cultivars better adapted to low P status soils.
Abstract: Developing phosphorus-use efficient faba bean (Vicia faba L.) genotypes is crucial for ensuring sustainable production in low phosphorus soils. The present study was conducted with the objective of identifying faba bean genotypes that use P efficiently. Twenty genotypes of faba bean in the field and 12 genotypes in the greenhouse were planted under...
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,
Victor Adetimirin
