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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Genotypic variation of phosphorus use efficiency among moroccan faba bean varieties (vicia faba major) under rainfed conditions
Journal of Plant Nutrition, Volume 35, No. 1, Year 2012
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Description
Faba bean (Vicia faba L.) is one of the most important food legumes grown in Morocco under rainfed conditions. This crop requires phosphorus (P) fertilizers to produce higher yields. However, many farmers use low quantities of P because of its cost and the risk of drought. Consequently, the use of varieties with high P use efficiency (PUE) can improve productivity and farmers' income under erratic conditions where the application of high amounts of P is not economically justified. The genetic variation of PUE among Moroccan faba bean varieties was studied under different levels of available phosphorus to orientate the choice of adapted varieties. Two experiments were conducted, under rainfed conditions, at the experiment station of Douyet (Morroco) in 2000-2001 (year 1) and 2002-2003 (year 2). In both years, four P treatments 0, 40, 80 and 120 kg P 2O 5 ha -1 as fertilizer and four faba bean varieties (G) were tested. In year 1, the varieties tested were Aguadulce, Defès, Karabiga and Lobab. The same varieties were used in year 2 with the exception of Aguadulce, which was replaced by a determinate genotype with smaller straw production. Results showed that the G effect on PUE was significant in year 1, but not in year 2. In the conditions of the moderate P availability (year 1), the variety Defes had the highest PUE and grain yield. Where P availability was lower (year 2), the highest PUE was reached by Karabiga; however, the difference with Defes was not significant. Data showed also that PUE was positively correlated with harvest index (HI) and phosphorus harvest index (PHI). In year 1, genotypic variation for PUE was mainly explained by phosphorus utilization efficiency; but not by phosphorus uptake efficiency. From this study, we can conclude that for rainfed conditions, the breeding strategy is to develop genotypes like Defes with high HI and improved PUE. © 2012 Copyright Taylor and Francis Group, LLC.
Authors & Co-Authors
Daoui, Khalid
Morocco, Rabat
Institut National de la Recherche Agronomique, Morocco
Karrou, Mohammed
Lebanon, Beirut
International Center for Agricultural Research in the Dry Areas Syria
Mrabet, Rachid
Morocco, Rabat
Institut National de la Recherche Agronomique, Morocco
Fatemi, Zain El Abidine
Morocco, Rabat
Institut National de la Recherche Agronomique, Morocco
Draye, X.
Belgium, Louvain-la-neuve
Université Catholique de Louvain
Ledent, Jean François
Belgium, Louvain-la-neuve
Université Catholique de Louvain
Statistics
Citations: 21
Authors: 6
Affiliations: 3
Identifiers
Doi:
10.1080/01904167.2012.631665
ISSN:
01904167
e-ISSN:
15324087
Research Areas
Food Security
Genetics And Genomics
Study Approach
Quantitative
Study Locations
Morocco