Chromosome Engineering in Tetraploid Wheat

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Abstract
The progress in genetic research of tetraploid wheats has been limited by a lack of suitable cytogenetic stocks similar to those available in hexaploid wheat. Also, the tetraploid wheats, as a group, have received less attention from scientists, because they are grown on a small part of the world's total wheat production area and have limited use in the production of bread products. However, one of the varieties Triticum turgidum L. var. durum, is widely used in the production of pasta products such as spaghetti and macaroni. Therefore, investigations have centered on the production of several sets of aneuploid genetic stocks in durum wheat and on the development of methods for their use. The aneuploid stocks of the durum cultivar Langdon include double‐ditelosomics, dimonotelosomics, D‐genome disomic substitutions, intercultivar chromosome substitution lines, and homozygous recombinant lines. The knowledge obtained during the development of these aneuploids has suggested methods for their use. Some examples of useful studies are described.

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