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Genetic variation for the duration of pre-anthesis development in durum wheat and its interaction with vernalization treatment and photoperiod

Sanna, Gavino and Giunta, Francesco and Motzo, Rosella and Mastrangelo, Anna Maria and De Vita, Pasquale (2014) Genetic variation for the duration of pre-anthesis development in durum wheat and its interaction with vernalization treatment and photoperiod. Journal of Experimental Botany . ISSN 0022-0957. eISSN 1460-2431. Article.

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DOI: 10.1093/jxb/eru170

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Abstract

A recombinant inbred durum wheat population was grown under three contrasting regimes: long days following vernalization (LDV), long days without vernalization (LD), and short days following vernalization (SDV). The length of several pre-anthesis stages and the number of leaves and the phyllochron were measured. Different groups of genes were involved in determining the phenology in the three treatments, as demonstrated by a quantitative trait locus (QTL) analysis. The length of the period required to reach the terminal spikelet stage was correlated with the time to anthesis only in the case of LDV- and LD-grown plants where the timing of anthesis depended on the final leaf number. However, for SDV-grown plants, anthesis date was more dependent on the length of the period between the terminal spikelet stage and anthesis and was independent of leaf number. The involvement of the phyllochron in determining the duration of pre-anthesis development was also treatment-dependent. QTL mapping of the various flowering time associated traits uncovered some novel loci (such as those associated with the phyllochron), in addition to confirming the presence of several well-established loci.

Item Type:Article
ID Code:9891
Status:Published
Refereed:Yes
Uncontrolled Keywords:Durum wheat, leaf number, phenology, phyllochron, pre-anthesis, QTL
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/02 Agronomia e coltivazioni erbacee
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Agraria
Publisher:Oxford University Press
ISSN:0022-0957
eISSN:1460-2431
Copyright Holders:© The Author 2014. Published by Oxford University Press on behalf of the Society for Experimental Biology
Deposited On:19 Jun 2014 13:37

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