English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/28328
Title: Genetic control of pre-heading phases and other traits related to development in a double-haploid barley (Hordeum vulgare L.) population
Authors: Borràs-Gelonch, Gisela; Slafera, Gustavo A.; Casas Cendoya, Ana María; van Eeuwijk, Fred A.; Romagosa, Ignacio
Keywords: Barley
Leaf appearance
Double haploids
Issue Date: Oct-2010
Publisher: Elsevier
Citation: Borràs-Gelonch G, Slafera GA, Casas AM, van Eeuwijkd F, Romagosa I. Genetic control of pre-heading phases and other traits related to development in a double-haploid barley (Hordeum vulgare L.) population. Field Crops Research 119 (1): 36-47 (2010)
Abstract: Extending the phase of stem elongation (SE) has been proposed as a tool to further improve yield potential in small-grain cereals. The genetic control of pre-heading phases may also contribute to a better understanding of phenological traits conferring adaptability. Given that an optimized total time to heading is one of the most important traits in a breeding program, a prerequisite for lengthening SE would be that this and the previous phase (leaf and spikelet initiation, LS) should be under different genetic control. We studied the genetic control of these two pre-heading sub-phases (from sowing to the onset of stem elongation, LS, and from then to heading, SE) in terms of Quantitative Trait Loci (QTL) in a barley double-haploid population derived from the cross Henni × Meltan, both two-rowed spring North European barley cultivars. DH lines (118) and their parents were studied in four field trials in North-Eastern Spain. Genetic control of a number of traits related to leaf appearance and tillering dynamics, which could be important for an early crop canopy structure, were also studied. LS and SE are, at least partially, under a different genetic control in the Henni × Meltan population, mainly due to a QTL on chromosome 2HS. The QTLs responsible for a different control of LS and SE did not seem to correspond with any major gene reported in the literature. Moreover shortening LS, so as to lengthen SE without modifying heading date, would not necessarily imply a negative drawback on traits that could be important for early vigour, such as phyllochron and the onset of tillering.
Description: 36 Pag., 3 Tabl., 2 Fig. The definitive version is available at: http://www.sciencedirect.com/science/journal/03784290
Publisher version (URL): http://dx.doi.org/10.1016/j.fcr.2010.06.013
URI: http://hdl.handle.net/10261/28328
ISSN: 0378-4290
DOI: 10.1016/j.fcr.2010.06.013
Appears in Collections:(EEAD) Artículos
Files in This Item:
File Description SizeFormat 
CasasA_FieldCropsRes_2010.pdf225,84 kBAdobe PDFThumbnail
Show full item record

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.