Fine mapping of short rachilla hair gene (srh) in Barley and an association study using flanking molecular markers and world germplasms

A. Javaid, S. Ikeda, I. Kataoka, Shin Taketa

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Short rachilla hair in barley is controlled by a recessive gene srh that is located on the long arm of barley chromosome 5H. It shows a skewed geographical distribution toward the Occidental regions of barley cultivation. This morphological character is an attractive trait to study the phylogeny of barley. In a previous study, srh was mapped between two markers at a distance of 1.6 and 0.5 cm in the proximal and distal side, respectively. An integrated map was constructed during this experiment using the data from two F2 populations and 320 homozygous recessive short rachilla hair plants from another population. The CAPS marker k06288KU and SSR marker Bmag0223 are found to be flanking short rachilla hair locus srh at a genetic distance of 1.6 and 4.0 cm, respectively. World barley germplasm collections of 192 accessions differing in rachilla type were surveyed using k06288KU and Bmag0223. SSR marker Bmag0223 showed a better association with srh. In Europe, North Africa and Ethiopia, the frequency of Bmag0223 allele A was high regardless of rachilla type, but in East Asia allele A was closely associated with short rachilla. On the basis of marker association and genetic diversity, the origin of short rachilla hair character in barley is discussed.

Original languageEnglish
Pages (from-to)400-408
Number of pages9
JournalAsian Journal of Plant Sciences
Volume8
Issue number6
DOIs
Publication statusPublished - 2009

Fingerprint

trichomes
germplasm
barley
genetic markers
hairs
genes
recessive genes
Northern Africa
germplasm conservation
East Asia
Ethiopia
gene frequency
genetic distance
geographical distribution
alleles
chromosomes
genetic variation
loci
phylogeny

Keywords

  • Barley
  • Diversity
  • Mapping
  • Origin
  • Rachilla hair

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Plant Science

Cite this

Fine mapping of short rachilla hair gene (srh) in Barley and an association study using flanking molecular markers and world germplasms. / Javaid, A.; Ikeda, S.; Kataoka, I.; Taketa, Shin.

In: Asian Journal of Plant Sciences, Vol. 8, No. 6, 2009, p. 400-408.

Research output: Contribution to journalArticle

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