Comparative mapping of the wheat Vrn-AI region with the rice Hd-6 region

Genome ◽  
1999 ◽  
Vol 42 (2) ◽  
pp. 204-209 ◽  
Author(s):  
K Kato ◽  
H Miura ◽  
S Sawada
Keyword(s):  
Heading Date ◽  
Wheat Chromosome ◽  
Photoperiod Response ◽  
Cdna Clones ◽  
Vernalization Response ◽  
Response Gene ◽  
Rice Chromosomes ◽  
Chromosome 5A ◽  
Comparative Genetic Mapping ◽  
Rice Cdna

Although extensive synteny between hexaploid wheat and rice chromosomes has been demonstrated, synteny between the species breaks down in several regions of the wheat genome carrying agronomically important genes. A possible relationship between the wheat Vrn-A1, the vernalization response gene on chromosome 5A, and the rice Hd-6, a QTL controlling heading date by photoperiod response on chromosome 3, was investigated. Rice cDNA clones which had previously been mapped onto the Hd-6 region were screened for comparative genetic mapping of the Vrn-A1 region. Ten markers mapped to Hd-6 were assigned to wheat chromosome 5A by nullisomic-tetrasomic analysis. Of them, four cDNA markers, linked within 2.2 cM in the rice Hd-6 region, were mapped on the flanking region of the wheat Vrn-A1, with a complete correspondence of order, demonstrating a fine-scale genetic collinearity. These results gave evidence that the wheat Vrn-A1 region is in synteny with the rice Hd-6 region.Key words: wheat, rice, vernalization response gene, photoperiod response gene, synteny.

Comparative Mapping of the Barley Ppd-H1 Photoperiod Response Gene Region, Which Lies Close to a Junction Between Two Rice Linkage Segments

Genetics ◽  
2002 ◽  
Vol 161 (2) ◽  
pp. 825-834
Author(s):  
Roy P Dunford ◽  
Masahiro Yano ◽  
Nori Kurata ◽  
Takuji Sasaki ◽  
Gordon Huestis ◽  
...  
Keyword(s):  
Comparative Mapping ◽  
Distal Part ◽  
Heading Date ◽  
Rice Chromosome ◽  
Photoperiod Response ◽  
Rflp Markers ◽  
Response Gene ◽  
The Relationship ◽  
Equivalent Region ◽  
Search For Homologs

Abstract Comparative mapping of cereals has shown that chromosomes of barley, wheat, and maize can be described in terms of rice “linkage segments.” However, little is known about marker order in the junctions between linkage blocks or whether this will impair comparative analysis of major genes that lie in such regions. We used genetic and physical mapping to investigate the relationship between the distal part of rice chromosome 7L, which contains the Hd2 heading date gene, and the region of barley chromosome 2HS containing the Ppd-H1 photoperiod response gene, which lies near the junction between rice 7 and rice 4 linkage segments. RFLP markers were mapped in maize to identify regions that might contain Hd2 or Ppd-H1 orthologs. Rice provided useful markers for the Ppd-H1 region but comparative mapping was complicated by loss of colinearity and sequence duplications that predated the divergence of rice, maize, and barley. The sequences of cDNA markers were used to search for homologs in the Arabidopsis genome. Homologous sequences were found for 13 out of 16 markers but they were dispersed in Arabidopsis and did not identify any candidate equivalent region. The implications of the results for comparative trait mapping in junction regions are discussed.

Alternative Splicing of Photoperiod Response Gene Ppd-B1 in Wheat

2009 ◽  
Vol 35 (10) ◽  
pp. 1764-1770 ◽  
Author(s):  
Zhi-Ai GUO ◽  
Guang-Yao ZHAO ◽  
Zheng-Long REN ◽  
Ji-Zeng JIA
Keyword(s):  
Alternative Splicing ◽  
Photoperiod Response ◽  
Response Gene

Linkage Relationships among Genes on Wheat Chromosome 5A That Condition Resistance to Hessian Fly

Crop Science ◽  
1995 ◽  
Vol 35 (6) ◽  
pp. 1603-1607 ◽  
Author(s):  
H. W. Ohm ◽  
H. C. Sharma ◽  
F. L. Patterson ◽  
R. H. Ratcliffe ◽  
M. Obanni
Keyword(s):  
Wheat Chromosome ◽  
Hessian Fly ◽  
Chromosome 5A ◽  
Linkage Relationships

Identification and mapping of a photoperiod response gene (QPpd.zafu-4A) on wild emmer wheat (Triticum turgidum L.) chromosome 4AL

Euphytica ◽  
2019 ◽  
Vol 215 (9) ◽  
Author(s):  
Jinsheng Yu ◽  
Yunzheng Miao ◽  
Siqing Yang ◽  
Zhaobin Shi ◽  
Nana Miao ◽  
...  
Keyword(s):  
Triticum Turgidum ◽  
Wild Emmer Wheat ◽  
Emmer Wheat ◽  
Wild Emmer ◽  
Photoperiod Response ◽  
Response Gene

scholarly journals Vernalization Response of Some Winter Wheat Cultivars (Triticum aestivum L.)

2012 ◽  
Vol 38 (No. 3-4) ◽  
pp. 97-103 ◽  
Author(s):  
J. Košner ◽  
K. Pánková
Keyword(s):  
Triticum Aestivum ◽  
Winter Wheat ◽  
Agronomic Traits ◽  
Triticum Aestivum L ◽  
Vernalization Requirement ◽  
Photoperiod Response ◽  
Vernalization Response ◽  
Multiple Alleles ◽  
Winter Wheat Cultivars ◽  
The Given

For 17 cultivars of winter wheat (Triticum aestivum L.) different vernalization and photoperiod responses were detected. The effect of photoperiod sensitivity was not significantly changed by vernalization; different vernalization responses were probably due to the presence of multiple alleles at Vrn loci. The delay in heading depended on the vernalization deficit exponentially: y = Parameter (1) + (y0 – Parameter (1)) × EXP (Parameter (2) × (x – x0)). The dependence was shown to be general and significant for the given model in all the studied cultivars. Individual regressions characterised responses of cultivars to a deficit of vernalization treatment. Cluster analysis according to the characterisation obtained (full vernalization requirement, minimum vernalization requirement, insufficient vernalization and parameters of the dependence) showed the relationships between cultivars and enabled their grouping by similar profiles of vernalization, and, possibly, of photoperiod response. In individual cultivars, an attempt was made to use the model to predict performance for some agronomic traits.

Dwarfing effect associated with the threshability gene Q on wheat chromosome 5A

2003 ◽  
Vol 122 (6) ◽  
pp. 489-492 ◽  
Author(s):  
K. Kato ◽  
R. Sonokawa ◽  
H. Miura ◽  
S. Sawada
Keyword(s):  
Wheat Chromosome ◽  
Chromosome 5A

A new genetic and deletion map of wheat chromosome 5A to detect candidate genes for quantitative traits

2014 ◽  
Vol 34 (4) ◽  
pp. 1599-1611 ◽  
Author(s):  
A. Gadaleta ◽  
A. Giancaspro ◽  
D. Nigro ◽  
S. L. Giove ◽  
Ornella Incerti ◽  
...  
Keyword(s):  
Candidate Genes ◽  
Quantitative Traits ◽  
Wheat Chromosome ◽  
Chromosome 5A

Development of STS markers closely linked to the Ppd-H1 photoperiod response gene of barley (Hordeum vulgare L.)

2000 ◽  
Vol 101 (8) ◽  
pp. 1202-1206 ◽  
Author(s):  
L. Decousset ◽  
S. Griffiths ◽  
R. P. Dunford ◽  
N. Pratchett ◽  
D. A. Laurie
Keyword(s):  
Hordeum Vulgare ◽  
Photoperiod Response ◽  
Hordeum Vulgare L ◽  
Response Gene ◽  
Sts Markers

INFLUENCE OF PHOTOPERIOD, SHORT-DAY VERNALIZATION, AND COLD VERNALIZATION ON DAYS TO HEADING IN AVENA SPECIES AND CULTIVARS

1972 ◽  
Vol 52 (4) ◽  
pp. 471-482 ◽  
Author(s):  
D. R. SAMPSON ◽  
V. D. BURROWS
Keyword(s):  
Wild Species ◽  
Dark Period ◽  
Heading Date ◽  
Vernalization Response ◽  
Breeding Lines ◽  
Short Day ◽  
Avena Strigosa ◽  
Days To Heading ◽  
Oat Cultivars ◽  
Oat Breeding

Exposure of 19 accessions belonging to nine species of Avena to constant daily photoperiods of 9, 12, 15, 18, and 24 hr showed that heading was promoted by the longer photoperiods, except in A. abyssinica, which headed first on 15-hr days. Some accessions headed sooner in 9-hr than in 12-hr photoperiods. An interrupted night treatment suggested that photoperiodic control of heading date is exercised by the length of the dark period. A second experiment demonstrated a short-day vernalization response in two of the six accessions initially grown in 9-hr days and later in 12-hr days. In a third experiment (19 entries) cold vernalization (7.2 C for 39 days) strongly promoted heading in seven wild species from the Mediterranean region and in A. abyssinica and the winter oat Landhafer (from 21 to 60 days earlier in 18-hr days). Weaker but significant (P <.05) responses were evident in A. strigosa and three of the remaining nine cultivated hexaploids. The responses to cold vernalization were greater in plants growing in 12- and 18-hr days than in 9-hr days. For the three experiments, regression analysis of days to heading on hours of photoperiod showed that A. byzantina C.W. 544, A. sativa Rapida, A. abyssinica, A. vaviloviana, and A. barbata were the least sensitive to differences in photoperiod (1–3 days earlier per hour longer). Avena strigosa and related diploid wild species showed intermediate sensitivity. Northern spring oat cultivars and Ottawa breeding lines were very sensitive (6–10 days earlier per hour longer). The implications that these findings have for oat breeding are discussed.

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