Independent selection for seed free tryptophan content and vernalization response in chickpea domestication

Ruth P. van-Oss; Avi Gopher; Zohar Kerem; Zvi Peleg; Simcha Lev-Yadun; Amir Sherman; Hong Bin Zhang; George Vandemark; Clare J. Coyne; Ofer Reany; Shahal Abbo

doi:10.1111/pbr.12598

Independent selection for seed free tryptophan content and vernalization response in chickpea domestication

Ruth P. van-Oss, Avi Gopher, Zohar Kerem, Zvi Peleg, Simcha Lev-Yadun, Amir Sherman, Hong Bin Zhang, George Vandemark, Clare J. Coyne, Ofer Reany, Shahal Abbo

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Chickpea shows a distinct domestication trajectory vis-a-vis pod dehiscence and growth cycle mediated by vernalization insensitivity compared with its companion Near Eastern legumes. Our objectives were: (i) to map the quantitative trait loci (QTLs) associated with vernalization response and seed free tryptophan in domesticated × wild chickpea progeny and (ii) estimate the genetic correlation between vernalization response and free tryptophan content. A domesticated × wild chickpea cross was used to document phenotypic segregation in both traits and to construct a skeletal genetic map for QTL detection. A number of vernalization response and seed free tryptophan content QTLs were documented in both F₂ and F₃ generations. No significant genetic correlation between these two traits was observed. Epistatic relationship between two free tryptophan loci was documented. It is evident that selection for high seed tryptophan is easier to accomplish relative to selection for vernalization insensitivity. This suggests that the two traits were selected independently in antiquity, thereby corroborating earlier claims for conscious selection processes associated with chickpea domestication.

Original language	English
Pages (from-to)	290-300
Number of pages	11
Journal	Plant Breeding
Volume	137
Issue number	3
DOIs	https://doi.org/10.1111/pbr.12598
State	Published - 1 Jun 2018
Externally published	Yes

Keywords

Cicer arietinum
Cicer reticulatum
conscious selection
crop evolution
nutritional quality

ASJC Scopus subject areas

Agronomy and Crop Science
Genetics
Plant Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1111/pbr.12598

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title = "Independent selection for seed free tryptophan content and vernalization response in chickpea domestication",

abstract = "Chickpea shows a distinct domestication trajectory vis-a-vis pod dehiscence and growth cycle mediated by vernalization insensitivity compared with its companion Near Eastern legumes. Our objectives were: (i) to map the quantitative trait loci (QTLs) associated with vernalization response and seed free tryptophan in domesticated × wild chickpea progeny and (ii) estimate the genetic correlation between vernalization response and free tryptophan content. A domesticated × wild chickpea cross was used to document phenotypic segregation in both traits and to construct a skeletal genetic map for QTL detection. A number of vernalization response and seed free tryptophan content QTLs were documented in both F2 and F3 generations. No significant genetic correlation between these two traits was observed. Epistatic relationship between two free tryptophan loci was documented. It is evident that selection for high seed tryptophan is easier to accomplish relative to selection for vernalization insensitivity. This suggests that the two traits were selected independently in antiquity, thereby corroborating earlier claims for conscious selection processes associated with chickpea domestication.",

keywords = "Cicer arietinum, Cicer reticulatum, conscious selection, crop evolution, nutritional quality",

author = "van-Oss, {Ruth P.} and Avi Gopher and Zohar Kerem and Zvi Peleg and Simcha Lev-Yadun and Amir Sherman and Zhang, {Hong Bin} and George Vandemark and Coyne, {Clare J.} and Ofer Reany and Shahal Abbo",

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doi = "10.1111/pbr.12598",

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AU - van-Oss, Ruth P.

AU - Gopher, Avi

AU - Kerem, Zohar

AU - Peleg, Zvi

AU - Lev-Yadun, Simcha

AU - Sherman, Amir

AU - Zhang, Hong Bin

AU - Vandemark, George

AU - Coyne, Clare J.

AU - Reany, Ofer

AU - Abbo, Shahal

PY - 2018/6/1

Y1 - 2018/6/1

N2 - Chickpea shows a distinct domestication trajectory vis-a-vis pod dehiscence and growth cycle mediated by vernalization insensitivity compared with its companion Near Eastern legumes. Our objectives were: (i) to map the quantitative trait loci (QTLs) associated with vernalization response and seed free tryptophan in domesticated × wild chickpea progeny and (ii) estimate the genetic correlation between vernalization response and free tryptophan content. A domesticated × wild chickpea cross was used to document phenotypic segregation in both traits and to construct a skeletal genetic map for QTL detection. A number of vernalization response and seed free tryptophan content QTLs were documented in both F2 and F3 generations. No significant genetic correlation between these two traits was observed. Epistatic relationship between two free tryptophan loci was documented. It is evident that selection for high seed tryptophan is easier to accomplish relative to selection for vernalization insensitivity. This suggests that the two traits were selected independently in antiquity, thereby corroborating earlier claims for conscious selection processes associated with chickpea domestication.

AB - Chickpea shows a distinct domestication trajectory vis-a-vis pod dehiscence and growth cycle mediated by vernalization insensitivity compared with its companion Near Eastern legumes. Our objectives were: (i) to map the quantitative trait loci (QTLs) associated with vernalization response and seed free tryptophan in domesticated × wild chickpea progeny and (ii) estimate the genetic correlation between vernalization response and free tryptophan content. A domesticated × wild chickpea cross was used to document phenotypic segregation in both traits and to construct a skeletal genetic map for QTL detection. A number of vernalization response and seed free tryptophan content QTLs were documented in both F2 and F3 generations. No significant genetic correlation between these two traits was observed. Epistatic relationship between two free tryptophan loci was documented. It is evident that selection for high seed tryptophan is easier to accomplish relative to selection for vernalization insensitivity. This suggests that the two traits were selected independently in antiquity, thereby corroborating earlier claims for conscious selection processes associated with chickpea domestication.

KW - Cicer arietinum

KW - Cicer reticulatum

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KW - crop evolution

KW - nutritional quality

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Independent selection for seed free tryptophan content and vernalization response in chickpea domestication

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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