Screening of heat‐tolerant Ethiopian chickpea accessions: Assessment of phenological and agromorphological traits and genomic relationships

Abstract A major agronomic challenge for chickpea (Cicer arietinum L.) production is temperatures above 35 °C, which causes reduced fertility and seed development. This study was aimed at assessing the phenotypic variation of chickpea genotypes under variable heat stress conditions. Chickpea genotyp...

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Autores principales:	Tsegaye Getahun, Kassaye Negash, Peter L. Chang, Eric vonWettberg, Noelia Carrasquilla‐Garcia, Pooran M. Gaur, Asnake Fikre, Teklehaimanot Haileslassie, Douglas Cook, Kassahun Tesfaye
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	Agriculture S Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/a484bdd547e44fd497326ed39143692b
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spelling	oai:doaj.org-article:a484bdd547e44fd497326ed39143692b2021-11-24T11:36:04ZScreening of heat‐tolerant Ethiopian chickpea accessions: Assessment of phenological and agromorphological traits and genomic relationships2639-669610.1002/agg2.20211https://doaj.org/article/a484bdd547e44fd497326ed39143692b2021-01-01T00:00:00Zhttps://doi.org/10.1002/agg2.20211https://doaj.org/toc/2639-6696Abstract A major agronomic challenge for chickpea (Cicer arietinum L.) production is temperatures above 35 °C, which causes reduced fertility and seed development. This study was aimed at assessing the phenotypic variation of chickpea genotypes under variable heat stress conditions. Chickpea genotypes were grown in heat‐stressed locations in both Ethiopia and India to assess phenotypic variation for heat tolerance. In addition, genomic relationships among the genotypes were assessed using genome‐wide single nucleotide polymorphism (SNP) markers. A total of 121 genotypes were assessed at three field sites in Ethiopia, under heat stress and nonstress conditions, and 57 genotypes were assessed under high‐heat‐stress conditions at the International Crops Research Institute for the Semiarid Tropics (ICRISAT) in Hyderabad, India. Data for five phenological and seven agromorphological traits were recorded. The results showed that the chickpea genotypes were severely affected by excessive heat at Hyderabad as compared with those planted under non‐heat‐stress conditions in Debre Zeit, Ethiopia. At extremely high temperatures, chickpea plants exhibited reduced floral initiation, arrested seed and pod development, shortened life cycles, and reduced plant height, seed size, grain yield, and yield‐related traits. Across stressed and nonstressed environments, there were highly significant differences among the genotypes for most of the traits (ANOVA, P ≤ .001). Under heat‐stressed environments, DZ‐Cr‐0034 was found to be a highly tolerant, whereas DZ‐Cr‐0026 was found to be a highly sensitive genotype. Genetic relationships among the genotypes were determined using 5,722 SNPs, revealing a single group of Ethiopian genotypes with small number of cultivars showing introgression from Middle Eastern germplasm. This study clearly demonstrated that there is genetic variability in chickpea for heat tolerance that can be harnessed to meet expected shifts towards warmer climatic conditions.Tsegaye GetahunKassaye NegashPeter L. ChangEric vonWettbergNoelia Carrasquilla‐GarciaPooran M. GaurAsnake FikreTeklehaimanot HaileslassieDouglas CookKassahun TesfayeWileyarticleAgricultureSEnvironmental sciencesGE1-350ENAgrosystems, Geosciences & Environment, Vol 4, Iss 3, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Agriculture S Environmental sciences GE1-350
spellingShingle	Agriculture S Environmental sciences GE1-350 Tsegaye Getahun Kassaye Negash Peter L. Chang Eric vonWettberg Noelia Carrasquilla‐Garcia Pooran M. Gaur Asnake Fikre Teklehaimanot Haileslassie Douglas Cook Kassahun Tesfaye Screening of heat‐tolerant Ethiopian chickpea accessions: Assessment of phenological and agromorphological traits and genomic relationships
description	Abstract A major agronomic challenge for chickpea (Cicer arietinum L.) production is temperatures above 35 °C, which causes reduced fertility and seed development. This study was aimed at assessing the phenotypic variation of chickpea genotypes under variable heat stress conditions. Chickpea genotypes were grown in heat‐stressed locations in both Ethiopia and India to assess phenotypic variation for heat tolerance. In addition, genomic relationships among the genotypes were assessed using genome‐wide single nucleotide polymorphism (SNP) markers. A total of 121 genotypes were assessed at three field sites in Ethiopia, under heat stress and nonstress conditions, and 57 genotypes were assessed under high‐heat‐stress conditions at the International Crops Research Institute for the Semiarid Tropics (ICRISAT) in Hyderabad, India. Data for five phenological and seven agromorphological traits were recorded. The results showed that the chickpea genotypes were severely affected by excessive heat at Hyderabad as compared with those planted under non‐heat‐stress conditions in Debre Zeit, Ethiopia. At extremely high temperatures, chickpea plants exhibited reduced floral initiation, arrested seed and pod development, shortened life cycles, and reduced plant height, seed size, grain yield, and yield‐related traits. Across stressed and nonstressed environments, there were highly significant differences among the genotypes for most of the traits (ANOVA, P ≤ .001). Under heat‐stressed environments, DZ‐Cr‐0034 was found to be a highly tolerant, whereas DZ‐Cr‐0026 was found to be a highly sensitive genotype. Genetic relationships among the genotypes were determined using 5,722 SNPs, revealing a single group of Ethiopian genotypes with small number of cultivars showing introgression from Middle Eastern germplasm. This study clearly demonstrated that there is genetic variability in chickpea for heat tolerance that can be harnessed to meet expected shifts towards warmer climatic conditions.
format	article
author	Tsegaye Getahun Kassaye Negash Peter L. Chang Eric vonWettberg Noelia Carrasquilla‐Garcia Pooran M. Gaur Asnake Fikre Teklehaimanot Haileslassie Douglas Cook Kassahun Tesfaye
author_facet	Tsegaye Getahun Kassaye Negash Peter L. Chang Eric vonWettberg Noelia Carrasquilla‐Garcia Pooran M. Gaur Asnake Fikre Teklehaimanot Haileslassie Douglas Cook Kassahun Tesfaye
author_sort	Tsegaye Getahun
title	Screening of heat‐tolerant Ethiopian chickpea accessions: Assessment of phenological and agromorphological traits and genomic relationships
title_short	Screening of heat‐tolerant Ethiopian chickpea accessions: Assessment of phenological and agromorphological traits and genomic relationships
title_full	Screening of heat‐tolerant Ethiopian chickpea accessions: Assessment of phenological and agromorphological traits and genomic relationships
title_fullStr	Screening of heat‐tolerant Ethiopian chickpea accessions: Assessment of phenological and agromorphological traits and genomic relationships
title_full_unstemmed	Screening of heat‐tolerant Ethiopian chickpea accessions: Assessment of phenological and agromorphological traits and genomic relationships
title_sort	screening of heat‐tolerant ethiopian chickpea accessions: assessment of phenological and agromorphological traits and genomic relationships
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/a484bdd547e44fd497326ed39143692b
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Screening of heat‐tolerant Ethiopian chickpea accessions: Assessment of phenological and agromorphological traits and genomic relationships

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