Results 181 to 190 of about 2,419 (214)

Effectiveness of ph gene in inducing homoeologous chromosome pairing in agrotricum

Theoretical and Applied Genetics, 1977
We observed pairing, when the ph gene was present, between wheat (Triticum aestivum L. em. Thell.) chromosome 4B, and an Agropyron intermedium (Host) Beauv. chromosome (Ai) carrying a gene resistant to wheat streak mosaic (WSM). In a monosomic addition polyhaploid [2n = 22 = 19' + 5B' (ph) + 4B' + Ai'], we recorded an average of 4.1 bivalents and 0.3 ...
R C, Wang, G H, Liang, E G, Heyne
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Analysis of karyotypic stability of homoeologous-pairing (ph) mutants in allopolyploid wheats

Chromosoma, 2001
Karyotypic analysis of wheat lines with different genotypes for the homoeologous-pairing loci Ph1 and Ph2 was carried out by means of a genomic in situ hybridization method that allowed unequivocal identification of the A, B and D genomes. Chromosomal rearrangements mainly affecting the A and D genomes were found in all plants of allohexaploid wheat ...
E, Sánchez-Morán, E, Benavente, J, Orellana   +2 more
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Meiotic duration in wheat genotypes with or without homoeologous meiotic chromosome pairing

Proceedings of the Royal Society of London. Series B. Biological Sciences, 1974
Abstract In order to investigate the possible relation between meiotic time and meiotic chromosome pairing behaviour, meiosis was timed in various forms of wheat and wheat hybrids. First, meiosis was timed in ten Triticum aestivum (var.
M D, Bennett, G A, Dover, R, Riley
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Attempts to induce homoeologous pairing between wheat and Agropyron cristatum genomes

Genome, 2006
Agropyron cristatum (2n = 4x = 28, PPPP) possesses potentially valuable traits that could be used in wheat (Triticum aestivum) improvement through interspecific hybridization. Homoeologous pairing between wheat chromosomes and P chromosomes added to wheat in a set of wheat – A. cristatum addition lines was assessed. First, the Ph-suppressing effect of
Jubault, Mélanie, Tanguy, Anne-Marie, Abelard, Paulette, Coriton, Olivier, Dusautoir, Jean-Claude, Jahier, Joseph   +5 more
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Genetic mapping of a major QTL promoting homoeologous chromosome pairing in a wheat landrace

Theoretical and Applied Genetics, 2019
Common wheat landrace Kaixian-luohanmai carries a gene(s) that promotes homoeologous chromosome pairing. A major QTL responsible for this effect was mapped to chromosome arm 3AL. Polyhaploid hybrids of a Chinese common wheat landrace Kaixian-luohanmai (KL) and related species show increased levels of chromosome pairing.
Chaolan Fan, Jiangtao Luo, Shujie Zhang, Meng Liu, Qingcheng Li, Yazhou Li, Lei Huang, Xuejiao Chen, Shunzong Ning, Zhongwei Yuan, Lianquan Zhang, Jirui Wang, Youliang Zheng, Dengcai Liu, Ming Hao   +14 more
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HOMOEOLOGOUS CHROMOSOME PAIRING AND RESTRICTED SEGREGATION IN THE FERN CERATOPTERIS

American Journal of Botany, 1978
The segregation of a marker characterized by pale green gametophytes was monitored within an inbreeding study of the polyploid fern Ceratopteris . Although all of the sporophytes showing segregation were derived from the self‐fertilization of haploid gametophytes, a low overall frequency of 2.
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GENETIC SUPPRESSION OF HOMOEOLOGOUS CHROMOSOME PAIRING IN HEXAPLOID WHEAT

Canadian Journal of Genetics and Cytology, 1972
Greater genetic complexity has been revealed for the control of bivalency in hexaploid wheat. A suppressor of homoeologous pairing has been detected on chromosome 3A. Thus, there are two suppressors in homoeologous group 3. The 3A suppressor may be homoeoallelic to either the suppressor on 3Dβ or the promoter, detected in this study, on 3Dα ...
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Homoeologous pairing and recombination features conferred by Aegilops mutica gene system

Theoretical and Applied Genetics
Aegilops mutica (TT, 2n = 2x = 14) possesses a gene system that counteracts the suppression of homoeologous pairing and recombination by Ph1 gene. In this study, the counteracting effects of the genomes ABT, ABTR, AABBTT, AABBDDTT, and AABBDT were investigated. All harbored the Ph1 gene but exhibited homoeologous pairing.
Mingrui Yang, Wen Xiang, Yingjian Zhang, Ziyue Yuan, Guifeng Lu, Wenjuan Yang, Yunfeng Jiang, Ming Hao, Chaolan Fan, Lianquan Zhang, Lin Huang, Shunzong Ning, Bo Jiang, Xuejiao Chen, Xue Chen, Dengcai Liu, Zhongwei Yuan   +16 more
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Genotypic variation in tetraploid wheat affecting homoeologous pairing in hybrids withAegilops peregrina

Genome, 2001
The Ph1 gene has long been considered the main factor responsible for the diploid-like meiotic behavior of polyploid wheat. This dominant gene, located on the long arm of chromosome 5B (5BL), suppresses pairing of homoeologous chromosomes in polyploid wheat and in their hybrids with related species.
H, Ozkan, M, Feldman
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CYTOLOGY AND FERTILITY OF PENTAPLOID WHEAT HYBRIDS WITH INDUCED PAIRING BETWEEN HOMOEOLOGOUS CHROMOSOMES

Canadian Journal of Genetics and Cytology, 1982
Two mutants, each promoting homoeologous chromosome pairing in hexaploid wheat (Triticum × aestivum L. emend gr. aestivum), in the cultivar Chinese Spring, ph1bat the Ph locus on chromosome 5BL and the other, ph2, on chromosome 3DS, were compared for their influence on chromosome pairing and fertility in pentaploid hybrids with Triticum turgidum L ...
U. Kushnir, G. M. Halloran
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