Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Identification of QTLs for grain yield and grain-related traits of maize (Zea mays L.) using an AFLP map, different testers, and cofactor analysis
Autore:
Marsan, PA; Gorni, C; Chitto, A; Redaelli, R; van Vijk, R; Stam, P; Motto, M;
Indirizzi:
Ist Sperimentale Cerealicoltura, I-24126 Bergamo, Italy Ist Sperimentale Cerealicoltura Bergamo Italy I-24126 126 Bergamo, Italy Keygene NV, NL-6700 AE Wageningen, Netherlands Keygene NV Wageningen Netherlands NL-6700 AE AE Wageningen, Netherlands Univ Wageningen & Res Ctr, Dept Plant Sci, Lab Plant Breeding, NL-6700 AJ Wageningen, Netherlands Univ Wageningen & Res Ctr Wageningen Netherlands NL-6700 AJ Netherlands
Titolo Testata:
THEORETICAL AND APPLIED GENETICS
fascicolo: 2-3, volume: 102, anno: 2001,
pagine: 230 - 243
SICI:
0040-5752(200102)102:2-3<230:IOQFGY>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Soggetto:
EUROPEAN FLINT LINES; QUANTITATIVE TRAITS; INBRED LINES; LINKAGE MAP; CONFIDENCE-INTERVALS; MOLECULAR MARKERS; HIGH-RESOLUTION; LOCI; POPULATION; RFLP;
Keywords:
AFLP markers; QTL mapping; testcross performance; composite interval mapping; Zea mays L.;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
53
Recensione:
Indirizzi per estratti:
Indirizzo: Motto, M Ist Sperimentale Cerealicoltura, Via Stezzano 24, I-24126 Bergamo, Italy Ist Sperimentale Cerealicoltura Via Stezzano 24 Bergamo Italy I-24126
Citazione:
P.A. Marsan et al., "Identification of QTLs for grain yield and grain-related traits of maize (Zea mays L.) using an AFLP map, different testers, and cofactor analysis", THEOR A GEN, 102(2-3), 2001, pp. 230-243

Abstract

We exploited the AFLP(R)(1) technique to map and characterise quantitativetrait loci (QTLs) for grain yield and two grain-related traits of a maize segregating population. Two maize elite inbred lines were crossed to produce 229 F-2 individuals which were genotyped with 66 RFLP and 246 AFLP markerloci. By selfing the F-2 plants 229 F-3 lines were produced and subsequently crossed to two inbred testers (T1 and T2). Each series of testcrosses was evaluated in field trials for grain yield, dry matter concentration, and test weight. The efficiency of generating AFLP markers was substantially higher relative to RFLP markers in the same population, and the speed at which they were generated showed a great potential for application in marker-assisted selection. AFLP markers covered linkage group regions left uncoveredby RFLPs; in particular at telomeric regions, previously almost devoided of markers. This increase of genome coverage afforded by the inclusion of the AFLPs revealed new QTL locations for all the traits investigated and allowed us to map telomeric QTLs with higher precision. The present study has also provided an opportunity to compare simple (SIM) and composite interval mapping (CIM) for QTL analysis. Our results indicated that the method of CIM employed in this study has greater power in the detection of QTLs, and provided more precise and accurate estimates of QTL positions and effects than SIM. For all traits and both testers we detected a total of 36 QTLs, of which only two were in common between testers. This suggested that the choice of a tester for identifying QTL alleles for use in improving an inbred iscritical and that the expression of QTL alleles identified may be tester-specific.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/04/20 alle ore 02:34:13