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Titolo:
Hexaploid triticales from hybrids of 'Langdon' durum D-genome substitutions with 'Gazelle' rye
Autore:
Xu, SJ; Joppa, LR;
Indirizzi:
Univ Illinois, Dept Crop Sci, Urbana, IL 61801 USA Univ Illinois Urbana IL USA 61801 is, Dept Crop Sci, Urbana, IL 61801 USA N Dakota State Univ, USDA ARS, No Crop Sci Lab, Fargo, ND 58105 USA N Dakota State Univ Fargo ND USA 58105 Crop Sci Lab, Fargo, ND 58105 USA
Titolo Testata:
PLANT BREEDING
fascicolo: 3, volume: 119, anno: 2000,
pagine: 223 - 226
SICI:
0179-9541(200006)119:3<223:HTFHO'>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
AEGILOPS-TAUSCHII; BREAD WHEAT; CHROMOSOMES; INHERITANCE; AESTIVUM; QUALITY; GENE;
Keywords:
Secale cereale; Triticum durum; D-genome; meiotic stability; substitution; triticale;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Xu, SJ Univ Illinois, Dept Crop Sci, 1102 S Goodwin Ave, Urbana, IL 61801 USA Univ Illinois 1102 S Goodwin Ave Urbana IL USA 61801 , IL 61801 USA
Citazione:
S.J. Xu e L.R. Joppa, "Hexaploid triticales from hybrids of 'Langdon' durum D-genome substitutions with 'Gazelle' rye", PLANT BREED, 119(3), 2000, pp. 223-226

Abstract

The formation of unreduced gametes in some hybrids between disomic D-genome substitutions (DS) of durum wheat cv. 'Langdon' and rye provides a convenient approach for the rapid introduction of D-genome chromosomes into hexaploid triticale. Meiotic pairing at metaphase I and seed fertility in spontaneous and colchicine-induced amphidiploids derived from F-1 hybrids betweena set of 'langdon' DS and 'Gazelle' rye were analysed. The purpose was to determine the effects of the substitution of D-genome chromosomes for theirA- and B-genome homoeologues on hexaploid triticale and to select stable disomic D-genome substitutions of hexaploid triticale. The results showed that the disomic substitutions with D-genome slightly increased the frequencyof univalents (1.0-3.13) compared with the 'Langdon' control primary hexaploid triticale (0.76). Substitutions 2D(2A) and 3D(3B) were partly desynaptic. The substitutions 1D(1A), 1D(1B) and 7D(7B) exhibited high seed fertility but the others had decreased fertility. Except for 2D(2A), 5D(5A), 3D(3B) and 5D(5B), 10 of the 14 possible hexaploid triticale D-genome disomic substitutions have been obtained. The results suggest that the poor compensation ability of some D-genome chromosomes for their homoeologous A- and B-genome chromosomes is a major factor affecting meiotic stability and fertility in the hexaploid triticale D-genome substitutions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 07:52:03