Molecular marker assisted genetic analysis of head shattering in six- rowed barley

N. Kandemir, David A Kudrna, S. E. Ullrich, A. Kleinhofs

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Head shattering in barley (Hordeum vulgare L.) has two forms; brittle rachis and weak rachis. Brittle rachis is not observed in cultivated barley since all cultivars carry non-brittle alleles at one of the two complementary brittle rachis loci (Btr1;Btr2). Weak rachis causes head shattering in barley cultivars and may be confused with brittle rachis. Brittle rachis has been mapped to the chromosome 3 (3H) short arm while map position(s) of the weak rachis is unknown. Two major and a putative minor QTL for head shattering were mapped using the Steptoe x Morex doubled haploid line population. The largest QTL, designated Hst-3, located on the chromosome 3 (3H) centromeric region, is associated with a major yield QTL. The Steptoe Hst-3 region, when transferred into Morex, resulted in a substantial decrease in head shattering. High-resolution mapping of Hst-3 was achieved using isogenic lines. Brittle rachis was mapped with molecular markers and shown to be located in a different position from that of Hst-3. The second major QTL, designated Hst-2 S, is located on chromosome 2 S. This locus is associated with an environmentally sensitive yield QTL.

Original languageEnglish (US)
Pages (from-to)203-210
Number of pages8
JournalTheoretical And Applied Genetics
Volume101
Issue number1-2
DOIs
StatePublished - 2000
Externally publishedYes

Fingerprint

Hordeum
Genetic Markers
genetic techniques and protocols
quantitative trait loci
barley
Head
genetic markers
Chromosomes, Human, Pair 3
chromosomes
Chromosomes, Human, Pair 2
Haploidy
loci
doubled haploids
cultivars
isogenic lines
Arm
Alleles
Hordeum vulgare
alleles
Population

Keywords

  • Brittle rachis
  • Peduncle curvature
  • QTL
  • Spike density
  • Weak rachis

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Horticulture
  • Plant Science
  • Genetics
  • Genetics(clinical)

Cite this

Molecular marker assisted genetic analysis of head shattering in six- rowed barley. / Kandemir, N.; Kudrna, David A; Ullrich, S. E.; Kleinhofs, A.

In: Theoretical And Applied Genetics, Vol. 101, No. 1-2, 2000, p. 203-210.

Research output: Contribution to journalArticle

Kandemir, N. ; Kudrna, David A ; Ullrich, S. E. ; Kleinhofs, A. / Molecular marker assisted genetic analysis of head shattering in six- rowed barley. In: Theoretical And Applied Genetics. 2000 ; Vol. 101, No. 1-2. pp. 203-210.
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