Field drought conditions impact yield but not nutritional quality of the seed in common bean (Phaseolus vulgaris L.)

Drought substantially limits seed yield of common bean (Phaseolus vulgaris L.) in the tropics. Understanding the interaction of drought on yield and the nutrient concentration of the seed is vital in order to supply nutrition to the millions of consumers who rely on common bean as a staple crop. Nev...

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Veröffentlicht in:PloS one 2019-06, Vol.14 (6), p.e0217099-e0217099
Hauptverfasser: Smith, Millicent R, Veneklaas, Erik, Polania, Jose, Rao, Idupulapati M, Beebe, Stephen E, Merchant, Andrew
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creator Smith, Millicent R
Veneklaas, Erik
Polania, Jose
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Beebe, Stephen E
Merchant, Andrew
description Drought substantially limits seed yield of common bean (Phaseolus vulgaris L.) in the tropics. Understanding the interaction of drought on yield and the nutrient concentration of the seed is vital in order to supply nutrition to the millions of consumers who rely on common bean as a staple crop. Nevertheless, the impact of drought on common bean for both yield and nutrient concentration has not yet been concurrently investigated in a field environment. Using 10 bred lines developed by CIAT and its partners for their improved adaptation to drought and phosphorus deficiency, this study characterised the impact of drought on yield and nutrient concentration for leaf and seed tissue of common bean grown in the field. Drought significantly reduced leaf area (by ~50%), harvest index (by ~60%), yield (by ~70%), seed weight (by ~25%) and enriched carbon isotope abundance (δ13C) in the seed. Within the soluble leaf fraction, drought significantly decreased the concentration of mineral nutrients and amino acids, whereas no negative effect on the concentration of nutrients and amino acids was detected within the seed. Genotypic variation in nutrient concentration in both the leaf and seed tissue was identified and should be explored further to identify traits that may confer tolerance to abiotic stress.
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subjects Agricultural production
Agriculture
Amino acids
Amino Acids - metabolism
Analysis
Biology and Life Sciences
Carbon isotopes
Common beans
Crop yield
Crop yields
Dietary minerals
Drought
Drought conditions
Droughts
Ecology and Environmental Sciences
Environmental impact
Food Quality
Health aspects
Influence
Leaf area
Legumes
Medicine and Health Sciences
Nutrient concentrations
Nutrient deficiency
Nutrients
Nutrition
Nutritional aspects
Nutritive Value
Phaseolus - growth & development
Phaseolus - metabolism
Phaseolus vulgaris
Phosphorus
Physiological aspects
Seeds
Seeds - metabolism
Sugars - metabolism
Tropical environments
Yield
title Field drought conditions impact yield but not nutritional quality of the seed in common bean (Phaseolus vulgaris L.)
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