Barley (Hordeum vulgare L.), a cereal species with major economic and agricultural impact, is a facultative long-day plant, i.e. it flowers earlier in response to long days than to short days. Flowering time genes of the photoperiod, vernalization and circadian clock pathways are best studied in barley. The Ppd-H1 gene, a pseudo-response regulator gene, is thought to be key for flowering induction under long days. Further important genes which convey flowering in barley under both photoperiods are homologs of FLOWERING LOCUS T (FT) and CONSTANS (CO). Flowering in response to vernalization is economically important in temperate cereals like barley and wheat and is controlled by the interaction of Vrn-H1 and Vrn-H2.
f36
ca4
MADS-box transcription factor
Chromosome: 5H
f4c
ac2
Chromosome: 7H
ae7
ec9
dd1
d52
Chromosome: 3H
d57
e9b
ae7
zinc finger motif and CCT domain
Chromosome: 4H
d39
Chromosome: 7H
c35
pseudo-response regulator gene
Chromosome: 2H
eb6
ec9
d52
Chromosome: 1H
pseudoresponse regulator gene
c07
b99
d57
e9b
d28
e49
f85
f85
Chromosome: 2H
d57
edd
f6e
c8c
Chromosome: 6H
c35
ee5
f85
c39
PubMed
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signaling pathwayPW:0000003Pathway Ontology