Candidate genes underlying QTL for flowering time and their interactions in a wide spring barley(Hordeum vulgare L.) cross

Ana M.Casas; Carlota R.Gazulla; Arantxa Monteagudo; Carlos P.Cantalapiedra; Marian Moralejo; MPilar Gracia; Francisco J.Ciudad; William T.B.Thomas; Jose L.Molina-Cano; Scott Boden; Bruno Contreras-Moreira; Ernesto Igartua

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Candidate genes underlying QTL for flowering time and their interactions in a wide spring barley(Hordeum vulgare L.) cross

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Response to vernalization and photoperiod are the main determinants controlling the time to flowering in temperate cereals. While the individual genes that determine a plant''s response to these environmental signals are well characterized, the combinatorial effect on flowering time of allelic variants for multiple genes remains unresolved. This study investigated the genetic control of flowering-time in a biparental population of spring barley, derived from a wide cross between a late-flowering European and an early-flowering North-American cultivar. While the major flowering time genes are not segregating in the Beka ×Logan cross, large variation in flowering was observed. We identified five QTL, with both parents found to contribute early alleles. The catalog of QTL discovered aligns with several candidate genes affecting flowering time in barley. The combination of particular alleles at HvCEN, HvELF3 and HvFT1 in Logan are responsible for the earliness of this cultivar. Interestingly, earliness for flowering could be further enhanced, with Beka found to contribute three early alleles, including a QTL colocating with a HvFD-like gene, suggesting that there are diverse aspects of the flowering-time pathway that have been manipulated in these two cultivars. Epistatic interactions between flowering-time QTL or candidate genes were observed in field data and confirmed under controlled conditions. The results of this study link photoperiod-dependent flowering-time genes with earliness per se genes into a single model, thus providing a unique framework that can be used by geneticists and breeders to optimize flowering time in barley.

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《作物学报：英文版》 |2021年第4期|P.862-872|共11页
作者
Ana M.Casas; Carlota R.Gazulla; Arantxa Monteagudo; Carlos P.Cantalapiedra; Marian Moralejo; MPilar Gracia; Francisco J.Ciudad; William T.B.Thomas; Jose L.Molina-Cano; Scott Boden; Bruno Contreras-Moreira; Ernesto Igartua;
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Department of Genetics and Plant Production Aula Dei Experimental Station(EEAD-CSIC) Avda Montanana 1005 E-50059 Zaragoza Spain;

Department of Genetics and Plant Production Aula Dei Experimental Station(EEAD-CSIC) Avda Montanana 1005 E-50059 Zaragoza Spain;

Department of Genetics and Plant Production Aula Dei Experimental Station(EEAD-CSIC) Avda Montanana 1005 E-50059 Zaragoza Spain;

Department of Genetics and Plant Production Aula Dei Experimental Station(EEAD-CSIC) Avda Montanana 1005 E-50059 Zaragoza SpainPresent address:Centro de Biotecnologia y Genomica de Plantas Universidad Politecnica de Madrid(UPM)and Instituto Nacional de Investigacion y Tecnologia Agraria y Alimentaria(INIA) Madrid 28223 Spain;

University of Lleida-AGROTECNIO Center Avda.Rovira Roure 191 25198 Lleida Spain;

Department of Genetics and Plant Production Aula Dei Experimental Station(EEAD-CSIC) Avda Montanana 1005 E-50059 Zaragoza Spain;

Instituto de Tecnologia Agraria Junta de Castilla y Leon ITACyL P.O.Box 172 47071 Valladolid Spain;

The James Hutton Institute Invergowrie Dundee DD25DA UK;

Institut de Recerca i Tecnologia Agroalimentaries(UdL-IRTA) Avda Rovira Roure 191 25198 Lleida Spain;

John Innes Centre Norwich Research Park Norwich NR47UH UKPresent address:School of Agriculture Food and Wine Waite Research Institute University of Adelaide Glen Osmond SA 5064 Australia;

Department of Genetics and Plant Production Aula Dei Experimental Station(EEAD-CSIC) Avda Montanana 1005 E-50059 Zaragoza SpainFundacion ARAID calle Maria de Luna 11 50018 Zaragoza SpainPresent address:The European Bioinformatics Institute(EMBL-EBI) Wellcome Trust Genome Campus Hinxton UK;

Department of Genetics and Plant Production Aula Dei Experimental Station(EEAD-CSIC) Avda Montanana 1005 E-50059 Zaragoza Spain;

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正文语种 chi
中图分类禾谷类作物;
关键词
Barley; Flowering; HvELF3; HvCEN; HvFT1;

Candidate genes underlying QTL for flowering time and their interactions in a wide spring barley(Hordeum vulgare L.) cross

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