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Titolo:
THE GENOME STRUCTURE OF THE 2 FORMS OF TH E INCOMPLETE WHEAT AGROPYRON-INTERMEDIUM AMPHIPLOIDS (2N=56)
Autore:
VISHNYAKOVA HS; YACHEVSKAYA GL; POLYAKOV VY;
Indirizzi:
RUSSIAN ACAD SCI,BIOINZHENERIYA CTR MOSCOW 117313 RUSSIA SCI PODMOSKOV MFG ASSOC MOSCOW 143013 RUSSIA MOSCOW MV LOMONOSOV STATE UNIV,BELOZERSKII INST MOLEC BIOL & BIOORG CHEM MOSCOW 107065 RUSSIA
Titolo Testata:
Genetika
fascicolo: 2, volume: 30, anno: 1994,
pagine: 244 - 249
SICI:
0016-6758(1994)30:2<244:TGSOT2>2.0.ZU;2-4
Fonte:
ISI
Lingua:
RUS
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
20
Recensione:
Indirizzi per estratti:
Citazione:
H.S. Vishnyakova et al., "THE GENOME STRUCTURE OF THE 2 FORMS OF TH E INCOMPLETE WHEAT AGROPYRON-INTERMEDIUM AMPHIPLOIDS (2N=56)", Genetika, 30(2), 1994, pp. 244-249

Abstract

Two forms of incomplete wheat- Agropyron intermedium amphiploids (IWAA, 2n = 56) were studied by the C-method of differential staining of chromosomes. The karyotypes of the studied forms were represented by the complete chromosome set of A, B, and D genomes of Triticum aestivum (2n = 42), and by varying number of chromosomes of Agropyron intermedium. IWAA153 contains seven chromosome pairs of A. intermedium, IWAA139contains six pairs and the pair with the C-banding pattern markedly different from chromosomes of A. intermedium and wheat. C-banded chromosomes of wheat practically did not exhibit any polymorphism in any of IWAA karyotypes. At the same time, C-banding pattern of four chromosomes of genome A (I A, 4A, 5A, 6A) was different in IWAA153 and IWAA139. Comparative analysis of A. intermedium subgenomes, which were included in karyotypes of IWAA153 and IWAA139, demonstrated that three chromosomes had a uniform C-banding pattern, while the other four had a markedly different pattern of heterochromatin (HC) distribution. The studyof the chromosome conjugation at MI of meiosis was performed on IWAA 139, IWAA153, F1 of this couple, and on the two wheat varieties ''Mironovskaya 808'' and ''Kavkaz''. The number of univalents in IWAA was higher than in the wheat varieties. In F1 of IWAA153 x IWAA139 hybrid normally conjugating chromosomes were accompanied by univalents and multivalents.

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Documento generato il 22/09/14 alle ore 18:14:16