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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Main Authors: Millicent R Smith, Erik Veneklaas, Jose Polania, Idupulapati M Rao, Stephen E Beebe, Andrew Merchant
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2019-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0217099
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spelling doaj-0c7c3ea4458742f1b130beb6bb4f74842021-03-03T20:38:35ZengPublic Library of Science (PLoS)PLoS ONE1932-62032019-01-01146e021709910.1371/journal.pone.0217099Field drought conditions impact yield but not nutritional quality of the seed in common bean (Phaseolus vulgaris L.).Millicent R SmithErik VeneklaasJose PolaniaIdupulapati M RaoStephen E BeebeAndrew MerchantDrought 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.https://doi.org/10.1371/journal.pone.0217099
collection DOAJ
language English
format Article
sources DOAJ
author Millicent R Smith
Erik Veneklaas
Jose Polania
Idupulapati M Rao
Stephen E Beebe
Andrew Merchant
spellingShingle Millicent R Smith
Erik Veneklaas
Jose Polania
Idupulapati M Rao
Stephen E Beebe
Andrew Merchant
Field drought conditions impact yield but not nutritional quality of the seed in common bean (Phaseolus vulgaris L.).
PLoS ONE
author_facet Millicent R Smith
Erik Veneklaas
Jose Polania
Idupulapati M Rao
Stephen E Beebe
Andrew Merchant
author_sort Millicent R Smith
title Field drought conditions impact yield but not nutritional quality of the seed in common bean (Phaseolus vulgaris L.).
title_short Field drought conditions impact yield but not nutritional quality of the seed in common bean (Phaseolus vulgaris L.).
title_full Field drought conditions impact yield but not nutritional quality of the seed in common bean (Phaseolus vulgaris L.).
title_fullStr Field drought conditions impact yield but not nutritional quality of the seed in common bean (Phaseolus vulgaris L.).
title_full_unstemmed Field drought conditions impact yield but not nutritional quality of the seed in common bean (Phaseolus vulgaris L.).
title_sort field drought conditions impact yield but not nutritional quality of the seed in common bean (phaseolus vulgaris l.).
publisher Public Library of Science (PLoS)
series PLoS ONE
issn 1932-6203
publishDate 2019-01-01
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.
url https://doi.org/10.1371/journal.pone.0217099
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