Heading date QTL in a spring × winter barley cross evaluated in Mediterranean environments
Fecha de publicación2008
Igartua Arregui, Ernesto
Ciudad, F. J.
Molina Cano, José Luis
Gracia Gimeno, Ma. Pilar
Lasa Dolhagaray, José Manuel
Casas Cendoya, Ana Maria
MetadatosMostrar el registro completo del ítem
Heading date is a key trait for the adaptation of barley to Mediterranean environments. We studied the genetic control of flowering time under Northern Spanish (Mediterranean) conditions using a new population derived from the spring/winter cross Beka/Mogador. A set of 120 doubled haploid lines was
evaluated in the field, and under controlled temperature and photoperiod conditions. Genotyping was carried out with 215 markers (RFLP, STS, RAPD, AFLP, SSR), including markers for vernalization candidate genes, HvBM5 (Vrn-H1), HvZCCT (Vrn-H2), and HvT SNP22 (Ppd-H1). Four major QTL, and the interactions between them, accounted for most of the variation in both field (71–92%) and greenhouse trials (55–86%). These were coincident with the location of the major genes for response to vernalization and short photoperiod (Ppd-H2 on chromosome 1H). A major QTL, near the centromere of chromosome 2H was the most important under autumn sowing conditions. Although it is detected under all conditions, its action seems not independent from environmental cues. An epistatic interaction involving the two vernalization genes was detected when the plants were grown without vernalization and under long photoperiod. The simultaneous presence of the winter Mogador allele at the two loci produced a marked delay in heading date, beyond a mere additive effect. This interaction, combined with the effect of the gene responsive to short photoperiod, Ppd-H2, was found responsible of the phenomenon known as short-day vernalization, present in some of the lines of the population.
Es parte deMolecular Breeding, 2008, vol. 21, núm. 4, p. 455–471
Showing items related by title, author, creator and subject.
Yahiaoui, Samia; Cuesta-Marcos, Alfonso; Gracia Gimeno, Ma. Pilar; Medina Abad, Blanca; Lasa Dolhagaray, José Manuel; Casas Cendoya, Ana Maria; Ciudad, F. J.; Montoya, J. L.; Moralejo Vidal, Mª Angeles; Molina Cano, José Luis; Igartua Arregui, Ernesto (Wiley, 2014)Barley landraces from the western Mediterranean area have not been thoroughly exploited by modern breeding. This study aims at assessing the agronomic value of a core collection of lines derived from landraces of Spanish ...
Quantitative trait loci for agronomic traits in an elite barley population for Mediterranean conditions Mansour Elsayed, Elsayed; Casas Cendoya, Ana Maria; Gracia Gimeno, Ma. Pilar; Molina Cano, José Luis; Moralejo Vidal, Mª Angeles; Cattivelli, Luigi; Thomas, William T. B.; Igartua Arregui, Ernesto (Springer, 2013-09-15)Advances in plant breeding through marker-assisted selection (MAS) are only possible when genes or quantitative trait loci (QTLs) can contribute to the improvement of elite germplasm. A population of recombinant inbred ...
Gracia Gimeno, Ma. Pilar; Mansour Elsayed, Elsayed; Casas Cendoya, Ana Maria; Lasa Dolhagaray, José Manuel; Medina Abad, Blanca; Molina Cano, José Luis; Moralejo Vidal, Mª Angeles; López, Alberto; López Fuster, Prudencio; Escribano, J.; Ciudad, F. J.; Codesal, P.; Montoya, J. L.; Igartua Arregui, Ernesto (Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (Espanya), 2012)The Spanish Barley Breeding Program is carried out by four public research organizations, located at the most representative barley growing regions of Spain. The aim of this study is to evaluate the program retrospectively, ...