Results 171 to 180 of about 2,419 (214)

Electrophoretic evidence for homoeologous chromosome pairing in the apogamous fern species Dryopteris nipponensis (Dryopteridaceae)

Journal of Plant Research, 2003
Segregation of genotypes through homoeologous chromosome pairing in the apogamous species Dryopteris nipponensis was tested by electrophoretic analysis. Of 284 progeny examined (250 gametophytes and 34 sporophytes), from the parental sporophyte with the Pgi-2 genotype abc, five showed different genotypes from that of the parent (three aac, one bbc and ...
Yasuyuki Watano
exaly   +3 more sources

Transfer of Ph I genes promoting homoeologous pairing from Triticum speltoides to common wheat

Theoretical and Applied Genetics, 1994
Diploid-like chromosome pairing in polyploid wheat is controlled by several Ph (pairing homoeologous) genes with major and minor effects. Homoeologous pairing occurs in either the absence of these genes or their inhibition by genes from other species (Ph (I) genes).
Hisashi Tsujimoto
exaly   +3 more sources

Prevention of Pairing of Homoeologous Meiotic Chromosomes of Wheat by an Activity of Supernumerary Chromosomes of Aegilops

Nature, 1972
Prevention of Pairing of Homoeologous Meiotic Chromosomes of Wheat by an Activity of Supernumerary Chromosomes of ...
GABRIEL A. DOVER, RALPH RILEY
exaly   +2 more sources

Preferential occurrence of wheat-rye meiotic pairing between chromosomes of homoeologous group 1

Theoretical and Applied Genetics, 1982
Wheat-rye homoeologous pairing in both ABRR and (0-7)A(0-7)BRR plants takes place preferentially between homoeologous chromosomes of group 1. This suggests either a much greater affinity between wheat and rye chromosomes for this group or more efficient pairing initiation because of common nucleolar organizer activities.
exaly   +3 more sources

Homoeologous Meiotic Chromosome Pairing in Triticum aestivum in which Chromosome 5B is replaced by an Alien Homoeologue

Nature, 1970
In the hexaploid bread wheat (Triticum aestivum 2n = 6x = 42) meiotic pairing is confined to fully homologous chromosome partners and inheritance is disomic. This arises from the activity of a single locus (Ph, pairing homoeologous) distally located on the long arm of chromosome 5B1,2.
V, Chapman, R, Riley
exaly   +3 more sources

The effect of B chromosomes on homoeologous pairing in species hybrids

Chromosoma, 1973
G.M. Evans, A.J. Macefield
exaly   +2 more sources

Homoeologous chromosome pairing across the eukaryote phylogeny

Molecular Phylogenetics and Evolution, 2017
During the past quarter century, molecular phylogenetic inferences have significantly resolved evolutionary relationships spanning the eukaryotic tree of life. With improved phylogenies in hand, the focus of systematics will continue to expand from estimating species relationships toward examining the evolution of specific, fundamental traits across ...
Amanda L, Grusz, Erin M, Sigel, Colby, Witherup   +2 more
openaire   +2 more sources

THE PAIRING OF AN ALIEN CHROMOSOME WITH HOMOEOLOGOUS CHROMOSOMES OF WHEAT

Canadian Journal of Genetics and Cytology, 1972
The homoeology of chromosome A of Triticum umbellulatum has been determined by studying its pairing relationships with wheat telocentrics in hybrids having the chromosome constitution of 20 wheat chromosomes + one wheat telocentric chromosome + seven Triticum speltoides chromosomes + chromosome A.
Raghbir S. Athwal, Gordon Kimber
openaire   +1 more source

Regulation of homoeologous pairing in pentaploid wheat hybrids

Genetica, 1982
Comparisons were made of levels of chromosome pairing in pentaploid hybrids between normal and ph1b-and ph2-mutant forms of Triticum aestivum ssp. vulgare cv. Chinese Spring each crossed with Triticum kotschyi and T. turgidum var. dicoccoides. Higher levels of multivalent formation in the ph1b-kotschyi, compared with the ph1b-dicoccoides pentaploid was
U. Kushnir, G. M. Halloran
openaire   +1 more source

Suppression of Homoeologous Pairing by B Chromosomes in a Lolium Species Hybrid

Nature New Biology, 1972
INTERSPECIFIC hybridization together with polyploidy has been an important force in the evolution of many of our graminaceous crop plants. Both wheat (Triticum aestivum) and oats (Avena sativa), for example, are natural allohexaploids derived in each case from the hybridization of three separate but related diploid species.
G M, Evans, A J, Macefield
openaire   +2 more sources