Book ChapterDOI
Incorporation of Barley Chromosomes into Wheat
A. K. M. R. Islam,K. W. Shepherd +1 more
- pp 128-151
TLDR
Wide crosses between different plant species and even between different genera have interested plant breeders and botanists since before the turn of the century and hybrids between Wheat and barley are the starting materials for determining the evolutionary and genetical relationship between wheat and barley chromosomes.Abstract:
Wide crosses between different plant species and even between different genera have interested plant breeders and botanists since before the turn of the century. Wheat (Triticum),being the most important food crop of the world, has attracted most attention and it has been hybridized extensively with “alien” species belonging to several neighboring genera (Islam 1980a; Sharma and Gill 1983). The objectives in hybridizing wheat with barley are manifold. The prospect of transferring desirable agronomic characters like tolerance to drought or soil salinity from barley to wheat prompted some early workers to attempt wheat-barley hybridizations. More recent considerations are to transfer nematode and disease resistance genes from barley to wheat. Furthermore, hybrids between wheat and barley are the starting materials for determining the evolutionary and genetical relationship between wheat and barley chromosomes.read more
Citations
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Journal ArticleDOI
Long-distance transport of gases in plants: a perspective on internal aeration and radial oxygen loss from roots
TL;DR: In this article, the authors investigated the anatomical basis of the barrier to radial O2 loss in various species and found that the barrier may also impede influx of potentially toxic substances such as CO2, methane, and ethylene.
Journal ArticleDOI
Use of wild relatives to improve salt tolerance in wheat
TL;DR: As several sources of improved Na+ "exclusion" are now known to reside on different chromosomes in various genomes of species in the Triticeae, further work to identify the underlying mechanisms and then to pyramid the controlling genes for the various traits might enable substantial gains in salt tolerance to be achieved.
Journal ArticleDOI
Improving salt tolerance of wheat and barley: future prospects
TL;DR: In this review, key traits contributing to salt tolerance, and sources of variation for these within the Triticeae, are identified and recommendations for use of these traits in screening for salt tolerance are summarised.
Journal ArticleDOI
Chromosome-based genomics in the cereals.
TL;DR: This review describes the development of methods for the preparation of intact chromosome suspensions from the major cereals, and their analysis and sorting using flow cytometry, and presents some examples demonstrating that a chromosome-based approach is advantageous for the analysis of the complex genomes of cereals.
Journal ArticleDOI
The barley Genome and its Relationship with the Wheat Genomes. A Survey with an Internationally Agreed Recommendation for Barley Chromosome Nomenclature
TL;DR: The information collected demonstrates largely similar genetic contents and collinearity of gene loci in the seven chromosomes of barley and in those of other members of the Triticeae, indicating that the whole group can be considered as a single gene pool.
References
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Journal ArticleDOI
Ribosomal DNA spacer-length polymorphisms in barley: mendelian inheritance, chromosomal location, and population dynamics.
TL;DR: It is concluded that the rDNA sl variants and/or associated loci are under selection in CCII, which demonstrates that Rrn1 and Rrn2 are useful as new genetic markers.
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TOWARD A SATURATED LINKAGE MAP IN TOMATO BASED ON ISOZYMES AND RANDOM cDNA SEQUENCES
TL;DR: A linkage map in tomato has been developed based on isozyme and random cDNA clones derived from mRNA, which estimates that approximately 92% of the genome can be monitored during segregation with these markers.
Journal ArticleDOI
Construction of genetic linkage maps in maize and tomato using restriction fragment length polymorphisms.
TL;DR: A subsequent comparison of the RFLP inheritance patterns in F2 populations from tomato and maize permitted arrangement of the loci detected by these clones into genetic linkage groups for both species.
Journal ArticleDOI
Genetics society of canada award of excellence lecture an induced mutant with homoeologous pairing in common wheat
TL;DR: An apparent deletion of Ph, the chromosome-5B suppressor of homoeologous pairing, was obtained by X-raying normal pollen and using it on plants monosomic for a 5B chromosome carrying the marker Hai.
Journal ArticleDOI
Isolation and characterization of euplasmic wheat-barley chromosome addition lines
TL;DR: Hybridization of Chinese Spring wheat and Betzes barley using wheat as the female parent gave only 1·3 per cent seed set compared to 15·4 per cent obtained with the reciprocal cross made earlier, and only one of the 20 F1 hybrids obtained possessed the normal complement of 28 chromosomes.