Distribution of seed mineral nutrients and their correlation in Phaseolus vulgaris

Mineral nutrients are essential for plant growth and reproduction and nutrient deficiencies can limit yield. In addition, plant products represent an important source of minerals in the human diet. A genetic approach has been taken to advance our understanding of nutrient use efficiency in plants. Towards this purpose, we have selected the common bean (Phaseolus vulgaris, L.) as a model genetic system. An Andean (Calima), and a Mesoamerican (Jamapa) genotype, as well as a family of 76 recombinant inbreds (1710) lines from the (Jamapa x Calima) cross were used in the analysis. Mineral nutrient concentration and Zn efficiency were analyzed. Eleven macro- and micronutrients tested were detected in bean seeds. Seed Zn concentration was segregating in the RI family, and ranged from a low of 32.5 mu g center dot g(-1) in RIL148 to 67.1 mu g center dot g(-1) in RIL135. RIL5, RIL6, RIL15, RIL47, RIL137 and RIL150. The latter had consistently the highest mineral concentrations among all lines. Significant correlation was found between seed Zn concentration and the concentrations of Fe, Cu, Mg, Mn and P, but not the concentrations of Se, B, Ca, and S. These correlations are discussed together with Zn accumulation and Zn efficiency trait in bean.