| Gene Symbold |
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Class
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Level 1
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Response to Vernalization
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Level 2
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Level 3
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Level 4
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Symbol
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Wild Type
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Vrn-B1a
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Allele
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Synonyms
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Vrn4{1173}, Vrn2{1172}, Ss{002}, Vrn2a = Vrn2{921,920}, Vrn2b = Vrn2{921,920}
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Chromosomes
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5B{885}, 5D{635}, 5BL{885}, 5B{921,920}, 5BL or 7BL{635,0282}
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Germplasms
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i:Ank-18{921,920}, i:Triple Dirk B{1172}, s:Diamant 1*8/Mironovskaya 5A{920}, s:Diamant 1*8/Skorospelka 35 5A{920}, s:Rescue*/Cadet 5A Vrn-A1 Vrn-D1a{885}, s:Saratovskaya 29*8/Mironovskaya 808 5A{920}, s:Saratovskaya 29*8/Odesskaya 51 5A{920}, v:Bersee{557}, v:Brown Schlanstedt{001,002,1171,1172}, v:Cadet{1221}, v:Festiguay{1172}, v:Magali, v:Mara{1611}, v:Milturum 321{885,920}, v:Milturum 885{885,920}, v:Noe{002}, v:Pyrothrix 28{920}, v:Spica{557}, v:T. spelta var. duhamelianum KT19-1{10057}, v:Ulyanovka 9{920}, v2:Borsum Vrn1-A1a{001}, v2:Dala Vrn1-A1a{001}, v2:Diamant 1 Vrn1{001,920}, v2:Gabo Vrn4{1172}, v2:Halland Vrn-A1a{001}, v2:Harukikari Vrn-A1a{883}, v2:Rubin Vrn-A1a{001}, v2:Saratovskaya 29 Vrn-A1a{920}, v2:Shortandinka Vrn-A1a{1221}, v2:Triple Dirk Vrn-A1a{1173}, ma:A dCAPS marker derived from Xwg644-5B was 1.7 cM from Vrn-B1{10006}, ma:Vrn-B1a - 1.6 cM - Xwg644-5B - 2.5 cM - Xgwm408-5B{10004}, ma:Closely linked to Xgwm408-5B in Diamant I*/Mironovskaya 808 5A // Bezostaya 1{10007}, ma:A close association of Vrn-B1 with Xcdo1326-5B was reported in{10057}, c:GenBank AY74603.1{10695}
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Comment
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When mapped as a QTL Vrn-B1 showed closest association with Xgwm408-5B {10007}.
All common wheat genotypes carrying Vrn-B1a studied so far have a 6.8 kb deletion in intron 1 (Triple Dirk B, Bersee, Festiguay, Mara, Milturum, Noe, Spica) {10202}.
Two variants of Vrn-B1a were distinguished in {920,921}. Carriers of an earlier designated Vrn2b (characterized by Diamant 1*8/Skorospelka 35 5A) showed accelerated flowering after 15 and 30 days of vernalization, whereas carriers of Vrn-2a, (characterized by Ank-18 and Saratovskaya 29*8/Mironovskaya 808 5A) did not respond to these periods of vernalization. This distinction was not made in the above list.
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