Genetic variation in component traits of heading date in Hordeum vulgare subsp. spontaneum accessions characterized in controlled environments

I. Karsai, P. M. Hayes, J. Kling, I. A. Matus, K. Mészáros, L. Láng, Z. Bedo, Kazuhiro Sato

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Ancestral germplasm may be a useful source of genetic variation for crop improvement. Genetic variation in developmental traits that contribute to heading date may be useful in developing varieties that are uniquely tailored to specific stress environments. Hordeum vulgare subsp. spontaneum (K. Koch) A. & Gr. is the ancestor of cultivated barley and useful developmental trait alleles may have been lost in the domestication process. Accordingly, we surveyed a sample of 16 subsp. spontaneum accessions for vernalization requirement, photoperiod sensitivity, photoperiod response, and relative earliness. We compared the subsp. spontaneum accessions to four H. vulgare L. subsp. vulgare accessions representing spring, facultative, and winter growth habit. Thirteen subsp. spontaneum accessions originating from the Fertile Crescent and the one subsp. spontaneum accession from the Caucasus region required vernalization; they were responsive to long photoperiods and most were very early. Two subsp. spontaneum accessions from the Himalayan region had no vernalization requirement but were extremely sensitive to short photoperiods. We used a clustering procedure to define two groups of subsp. spontaneum accessions, a group of subsp. spontaneum that included the two subsp. vulgare accessions of spring and facultative growth habit, and a fourth group comprised of the two subsp. vulgare winter habit cultivars. These data indicate that subsp. spontaneum may be a source of novel alleles for growth habit.

Original languageEnglish
Pages (from-to)1622-1632
Number of pages11
JournalCrop Science
Volume44
Issue number5
Publication statusPublished - Sep 2004

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Hordeum vulgare subsp. spontaneum
heading
vernalization
growth habit
photoperiod
genetic variation
alleles
winter
domestication
Hordeum vulgare
early development
germplasm
ancestry
barley
cultivars
crops
sampling

ASJC Scopus subject areas

  • Agronomy and Crop Science

Cite this

Genetic variation in component traits of heading date in Hordeum vulgare subsp. spontaneum accessions characterized in controlled environments. / Karsai, I.; Hayes, P. M.; Kling, J.; Matus, I. A.; Mészáros, K.; Láng, L.; Bedo, Z.; Sato, Kazuhiro.

In: Crop Science, Vol. 44, No. 5, 09.2004, p. 1622-1632.

Research output: Contribution to journalArticle

Karsai, I, Hayes, PM, Kling, J, Matus, IA, Mészáros, K, Láng, L, Bedo, Z & Sato, K 2004, 'Genetic variation in component traits of heading date in Hordeum vulgare subsp. spontaneum accessions characterized in controlled environments', Crop Science, vol. 44, no. 5, pp. 1622-1632.
Karsai, I. ; Hayes, P. M. ; Kling, J. ; Matus, I. A. ; Mészáros, K. ; Láng, L. ; Bedo, Z. ; Sato, Kazuhiro. / Genetic variation in component traits of heading date in Hordeum vulgare subsp. spontaneum accessions characterized in controlled environments. In: Crop Science. 2004 ; Vol. 44, No. 5. pp. 1622-1632.
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