Characterization and Identification Of Potential Sources Of High Seed Iron and Zinc Content Among Uganda Common Bean Germplasm

June 2015 | AJAR

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Published: 16 June 2015


Though Uganda produces adequate amounts of food for its population the nutritional status is generally poor and undernourishment is considered as one of the major health problems. Despite the high prevalence of malnutrition, there is no literature that clearly documents the Uganda national food composition. The objective of this study was to identify potential sources of high iron (Fe) and zinc (Zn) content among bean germplasm of Uganda. An experiment of 187 genotypes was set at the National Agricultural Research Laboratories, Institute, Kawanda in the second season of 2011 in plots of 2 rows of 2 meters long in lattice design with 2 replications. Seed iron and zinc were analysed using XRF at Rwanda Agriculture Board (RAB). This study identified a high level of genetic diversity in Ugandan bean varieties (p=0.001) that may be appropriate for using in plant breeding programs directed at increasing the nutritional quality of common beans with respect to Fe and zinc. Iron and zinc were strongly positively correlated (r=0.51) suggesting that genetic factors that increase iron concentration are co- segregating with genetic factors that increase zinc concentration. The present study suggests that genes responsible for these minerals are linked to other genes and are multigenically controlled.


Micronutrient, Malnutrition, Bean.

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