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Titolo:
QTL analysis of tolerance to a German strain of BYDV-PAV in barley (Hordeum vulgare L.)
Autore:
Scheurer, KS; Friedt, W; Huth, W; Waugh, R; Ordon, F;
Indirizzi:
Univ Giessen, Inst Crop Sci & Plant Breeding 1, D-35392 Giessen, Germany Univ Giessen Giessen Germany D-35392 reeding 1, D-35392 Giessen, Germany Fed Biol Res Ctr, D-38104 Braunschweig, Germany Fed Biol Res Ctr Braunschweig Germany D-38104 8104 Braunschweig, Germany Scottish Crop Res Inst, Dundee DD2 5DA, Invergowrie, Scotland Scottish Crop Res Inst Dundee Invergowrie Scotland DD2 5DA wrie, Scotland
Titolo Testata:
THEORETICAL AND APPLIED GENETICS
fascicolo: 6-7, volume: 103, anno: 2001,
pagine: 1074 - 1083
SICI:
0040-5752(200111)103:6-7<1074:QAOTTA>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
YELLOW DWARF VIRUS; MAIZE STREAK VIRUS; MOSAIC-VIRUS; RESISTANCE GENES; YD2 GENE; MOLECULAR MARKERS; BAMMV-RESISTANCE; MASCARENE SOURCE; LOCI; WHEAT;
Keywords:
barley (Hordeum vulgare L.); barley yellow dwarf virus (BYDV-PAV) tolerance; QTL analysis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
78
Recensione:
Indirizzi per estratti:
Indirizzo: Ordon, F Univ Giessen, Inst Crop Sci & Plant Breeding 1, Heinrich Buff Ring 26-32, D-35392 Giessen, Germany Univ Giessen Heinrich Buff Ring 26-32 Giessen Germany D-35392 ny
Citazione:
K.S. Scheurer et al., "QTL analysis of tolerance to a German strain of BYDV-PAV in barley (Hordeum vulgare L.)", THEOR A GEN, 103(6-7), 2001, pp. 1074-1083

Abstract

One hundred and forty six barley doubled-haploid lines (DH lines) were tested for variation in grain yield, yield components, plant height, and heading date after artificial infection with a German isolate of barley yellow dwarf virus (BYDV-PAV-Braunschweig). Of these 146 lines 76 were derived fromthe cross of the barley yellow dwarf virus (BYDV) tolerant cultivar 'Post'to cv 'Vixen' (Ryd2) and 70 from the cross of Post to ev 'Nixe. Phenotypicmeasurements were gathered on both non-infected plants and plants artificially inoculated with BYDV-PAV by viruliferous aphids in pot and field experiments for three years at two locations. For all traits a continuous variation was observed suggesting a quantitative mode of inheritance for tolerance against BYDV-PAV. Using skeleton maps constructed using SSRs, AFLPs and RAPDs, two QTLs for relative grain yield per plant after BYDV infection, explaining about 47% of the phenotypic variance, were identified in Post x Vixen at the telomeric region of chromosome 2HL and at a region containing theRyd2 gene on chromosome 3HL. In Post x Nixe, a QTL was found in exactly the same chromosome 2HL marker interval. In this cross, additional QTL were mapped on chromosomes 7H and 4H and together these explained about 40% of the phenotypic variance. QTL for effects of BYDV infection on yield components, plant height, and heading date generally mapped to the same marker intervals, or in the vicinity of the QTL for relative grain yield. on chromosomes 2HL and 3HL, suggesting that these regions are of special importance for tolerance to the Braunschweig isolate of BYDV-PAV. Possible applications ofmarker-assisted selection for BYDV tolerance based on these results are discussed.

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Documento generato il 04/04/20 alle ore 02:55:21