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Grain Nutrients Variability in Pigeonpea Genebank Collection and Its Potential for Promoting Nutritional Security in Dryland Ecologies

Pigeonpea, a climate-resilient legume, is nutritionally rich and of great value in Asia, Africa, and Caribbean regions to alleviate malnutrition. Assessing the grain nutrient variability in genebank collections can identify potential sources for biofortification. This study aimed to assess the genet...

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Autores principales: Susmitha, Dhanapal, Kalaimagal, Thiyagarajan, Senthil, Ramachandran, Vetriventhan, Mani, Manonmani, Swaminathan, Jeyakumar, Prabhakaran, Anita, Bellie, Reddymalla, Surender, Choudhari, Pushpajeet L., Nimje, Chetna A., Peerzada, Ovais H., Arveti, Venkata Narayana, Azevedo, Vania C. R., Singh, Kuldeep
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9310011/
https://www.ncbi.nlm.nih.gov/pubmed/35898221
http://dx.doi.org/10.3389/fpls.2022.934296
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author Susmitha, Dhanapal
Kalaimagal, Thiyagarajan
Senthil, Ramachandran
Vetriventhan, Mani
Manonmani, Swaminathan
Jeyakumar, Prabhakaran
Anita, Bellie
Reddymalla, Surender
Choudhari, Pushpajeet L.
Nimje, Chetna A.
Peerzada, Ovais H.
Arveti, Venkata Narayana
Azevedo, Vania C. R.
Singh, Kuldeep
author_facet Susmitha, Dhanapal
Kalaimagal, Thiyagarajan
Senthil, Ramachandran
Vetriventhan, Mani
Manonmani, Swaminathan
Jeyakumar, Prabhakaran
Anita, Bellie
Reddymalla, Surender
Choudhari, Pushpajeet L.
Nimje, Chetna A.
Peerzada, Ovais H.
Arveti, Venkata Narayana
Azevedo, Vania C. R.
Singh, Kuldeep
author_sort Susmitha, Dhanapal
collection PubMed
description Pigeonpea, a climate-resilient legume, is nutritionally rich and of great value in Asia, Africa, and Caribbean regions to alleviate malnutrition. Assessing the grain nutrient variability in genebank collections can identify potential sources for biofortification. This study aimed to assess the genetic variability for grain nutrients in a set of 600 pigeonpea germplasms conserved at the RS Paroda Genebank, ICRISAT, India. The field trials conducted during the 2019 and 2020 rainy seasons in augmented design with four checks revealed significant differences among genotypes for all the agronomic traits and grain nutrients studied. The germplasm had a wider variation for agronomic traits like days to 50% flowering (67–166 days), days to maturity (112–213 days), 100-seed weight (1.69–22.17 g), and grain yield per plant (16.54–57.93 g). A good variability was observed for grain nutrients, namely, protein (23.35–29.50%), P (0.36–0.50%), K (1.43–1.63%), Ca (1,042.36–2,099.76 mg/kg), Mg (1,311.01–1,865.65 mg/kg), Fe (29.23–40.98 mg/kg), Zn (24.14–35.68 mg/kg), Mn (8.56–14.01 mg/kg), and Cu (7.72–14.20 mg/kg). The germplasm from the Asian region varied widely for grain nutrients, and the ones from African region had high nutrient density. The significant genotype × environment interaction for most of the grain nutrients (except for P, K, and Ca) indicated the sensitivity of nutrient accumulation to the environment. Days to 50% flowering and days to maturity had significant negative correlation with most of the grain nutrients, while grain yield per plant had significant positive correlation with protein and magnesium, which can benefit simultaneous improvement of agronomic traits with grain nutrients. Clustering of germplasms based on Ward.D2 clustering algorithm revealed the co-clustering of germplasm from different regions. The identified top 10 nutrient-specific and 15 multi-nutrient dense landraces can serve as promising sources for the development of biofortified lines in a superior agronomic background with a broad genetic base to fit the drylands. Furthermore, the large phenotypic data generated in this study can serve as a raw material for conducting SNP/haplotype-based GWAS to identify genetic variants that can accelerate genetic gains in grain nutrient improvement.
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spelling pubmed-93100112022-07-26 Grain Nutrients Variability in Pigeonpea Genebank Collection and Its Potential for Promoting Nutritional Security in Dryland Ecologies Susmitha, Dhanapal Kalaimagal, Thiyagarajan Senthil, Ramachandran Vetriventhan, Mani Manonmani, Swaminathan Jeyakumar, Prabhakaran Anita, Bellie Reddymalla, Surender Choudhari, Pushpajeet L. Nimje, Chetna A. Peerzada, Ovais H. Arveti, Venkata Narayana Azevedo, Vania C. R. Singh, Kuldeep Front Plant Sci Plant Science Pigeonpea, a climate-resilient legume, is nutritionally rich and of great value in Asia, Africa, and Caribbean regions to alleviate malnutrition. Assessing the grain nutrient variability in genebank collections can identify potential sources for biofortification. This study aimed to assess the genetic variability for grain nutrients in a set of 600 pigeonpea germplasms conserved at the RS Paroda Genebank, ICRISAT, India. The field trials conducted during the 2019 and 2020 rainy seasons in augmented design with four checks revealed significant differences among genotypes for all the agronomic traits and grain nutrients studied. The germplasm had a wider variation for agronomic traits like days to 50% flowering (67–166 days), days to maturity (112–213 days), 100-seed weight (1.69–22.17 g), and grain yield per plant (16.54–57.93 g). A good variability was observed for grain nutrients, namely, protein (23.35–29.50%), P (0.36–0.50%), K (1.43–1.63%), Ca (1,042.36–2,099.76 mg/kg), Mg (1,311.01–1,865.65 mg/kg), Fe (29.23–40.98 mg/kg), Zn (24.14–35.68 mg/kg), Mn (8.56–14.01 mg/kg), and Cu (7.72–14.20 mg/kg). The germplasm from the Asian region varied widely for grain nutrients, and the ones from African region had high nutrient density. The significant genotype × environment interaction for most of the grain nutrients (except for P, K, and Ca) indicated the sensitivity of nutrient accumulation to the environment. Days to 50% flowering and days to maturity had significant negative correlation with most of the grain nutrients, while grain yield per plant had significant positive correlation with protein and magnesium, which can benefit simultaneous improvement of agronomic traits with grain nutrients. Clustering of germplasms based on Ward.D2 clustering algorithm revealed the co-clustering of germplasm from different regions. The identified top 10 nutrient-specific and 15 multi-nutrient dense landraces can serve as promising sources for the development of biofortified lines in a superior agronomic background with a broad genetic base to fit the drylands. Furthermore, the large phenotypic data generated in this study can serve as a raw material for conducting SNP/haplotype-based GWAS to identify genetic variants that can accelerate genetic gains in grain nutrient improvement. Frontiers Media S.A. 2022-07-11 /pmc/articles/PMC9310011/ /pubmed/35898221 http://dx.doi.org/10.3389/fpls.2022.934296 Text en Copyright © 2022 Susmitha, Kalaimagal, Senthil, Vetriventhan, Manonmani, Jeyakumar, Anita, Reddymalla, Choudhari, Nimje, Peerzada, Arveti, Azevedo and Singh. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Susmitha, Dhanapal
Kalaimagal, Thiyagarajan
Senthil, Ramachandran
Vetriventhan, Mani
Manonmani, Swaminathan
Jeyakumar, Prabhakaran
Anita, Bellie
Reddymalla, Surender
Choudhari, Pushpajeet L.
Nimje, Chetna A.
Peerzada, Ovais H.
Arveti, Venkata Narayana
Azevedo, Vania C. R.
Singh, Kuldeep
Grain Nutrients Variability in Pigeonpea Genebank Collection and Its Potential for Promoting Nutritional Security in Dryland Ecologies
title Grain Nutrients Variability in Pigeonpea Genebank Collection and Its Potential for Promoting Nutritional Security in Dryland Ecologies
title_full Grain Nutrients Variability in Pigeonpea Genebank Collection and Its Potential for Promoting Nutritional Security in Dryland Ecologies
title_fullStr Grain Nutrients Variability in Pigeonpea Genebank Collection and Its Potential for Promoting Nutritional Security in Dryland Ecologies
title_full_unstemmed Grain Nutrients Variability in Pigeonpea Genebank Collection and Its Potential for Promoting Nutritional Security in Dryland Ecologies
title_short Grain Nutrients Variability in Pigeonpea Genebank Collection and Its Potential for Promoting Nutritional Security in Dryland Ecologies
title_sort grain nutrients variability in pigeonpea genebank collection and its potential for promoting nutritional security in dryland ecologies
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9310011/
https://www.ncbi.nlm.nih.gov/pubmed/35898221
http://dx.doi.org/10.3389/fpls.2022.934296
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