Journal ArticleDOI
Increased homoeologeous chromosome pairing in Hordeum vulgare × Triticum aestivum hybrids
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The production, morphology and cytology of F1 hybrids of Hordeum vulgare L. cv Betzes and Triticum aestivum cv Chinese Spring are reported on.Abstract:
WHEAT and barley are the most important cereals in the agriculture of temperate zones. Although both genera belong to the same tribe, Triticeae, apparently successful crosses between wheat and barley have been reported recently1,2. I report here the production, morphology and cytology of F1 hybrids of Hordeum vulgare L. cv Betzes×Triticum aestivum L. cv Chinese Spring.read more
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The genetic control of grain esterases in hexaploid wheat : 1. Allelic variation.
TL;DR: Segregational data involving null alleles and complex phenotypic differences indicate that the wheat grain esterases are encoded by three compound and probably homoeoallelic loci, each capable of producing at least six different isozymes.
Journal ArticleDOI
The genetic control of grain esterases in hexaploid wheat : 2. Homoeologous loci in related species.
TL;DR: A comparison of EST-5 grain esterase phenotypes from wheat-alien amphiploid, addition and substitution genotypes, resolved by flat-bed isoelectric focusing identified homoeologous Est-5 loci on chromosome 3H of Hordeum vulgare.
Journal ArticleDOI
Production and meiotic pairing behaviour of new hybrids of winter wheat (Triticum aestivum) × winter barley (Hordeum vulgare)
TL;DR: The demonstration by GISH of wheat-barley chromosome pairing in the hybrids and especially in their in vitro regenerated progenies proves the possibility of producing recombinants between these two genera, and thus of transferring useful characters from barley into wheat.
Journal ArticleDOI
Cycloiridation of α,β-Unsaturated Ketones, Esters, and Acetophenone
TL;DR: C−H activation of acetophenone and cyclic and acyclic α,β-unsaturated ketones or esters occurs with [IrH2(acetone)2(PPh3)2]+.
Journal ArticleDOI
Efficient production of wheat-barley hybrids and preferential elimination of barley chromosomes.
T. Koba,T. Handa,Takiko Shimada +2 more
TL;DR: Intergeneric hybridization between four common wheat cultivars, Triticum aestivum L. cultivars Chinese Spring, norin 12, Norin 61, and Shinchunaga, and cultivated barley, Hordeum vulgare L. cultivatears Betzes, Nyugoruden, Harunanijou, and Kinai 5 was carried out, suggesting the presence of crossability gene(s) other than the kr system of Chinese Spring.
References
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Meiosis in haploid barley — An interpretation of non-homologous chromosome associations
R. S. Sadasivaiah,K. J. Kasha +1 more
TL;DR: It is concluded that very little chromosome duplication is likely to be found within the haploid set of barley chromosomes and that the basic chromosome number is seven.
Journal ArticleDOI
Variation at Two Loci affecting Homoeologous Meiotic Chromosome Pairing in Triticum aestivum × Aegilops mutica Hybrids
Gabriel A. Dover,Ralph Riley +1 more
TL;DR: If allelic variation occurs at the PA locus in nature it is extremely rare, although mutation has been induced and mutant alleles isolated3,4.
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The effect of genes controlling different degrees of homoeologous pairing on quadrivalent frequency in induced autotetraploid lines of triticum longissimum
TL;DR: Different genotypes of Triticum longissimum are known to either promote or suppress chromosome pairing in crosses with polyploid wheats, and lines that promote homoeologous pairing are here designated as intermediate pairing lines, while those which have no effect or suppress pairing are known as low pairing lines.