Chinese scientists have derived a variety of disease-resistant wheat
Wheat
China
Published Jun 30, 2022
Tridge summary
In a recent study published in Theoretical and Applied Genetics, a team of Dr. Han Fangpu of the Institute of Genetics and Developmental Biology of the Chinese Academy of Sciences announced the creation of new lines for adding wheat and rye that provide resistance to Ug99 stem rust. This was reported by phys.org, writes agronews.ua. Ug99, a new strain of Puccinia graminis f. sp. Tritici, is harmful to several varieties of wheat worldwide and is a significant threat to global food security.
Original content
Therefore, it is very important to immediately extract new sources of resistance genes and transfer them to wheat. Rye, a close relative of wheat, is resistant to leaf rust, striped rust, stem rust and powdery mildew. It has become a valuable resource for several genes for resistance to a wide range of diseases to improve wheat genetics. They found that the 3RL line of wheat and rye carried the new Ug99 resistance gene by assessing disease resistance, cytological analysis, and molecular markers. Therefore, a new gene for resistance to Ug99 in the future can be used for wheat breeding. In addition, various chromosomal and centromeric variations are induced by remote hybridization of wheat and rye. As a result of this process, ring chromosomes, minichromosomes, dicentric chromosomes and tricentric chromosomes are formed from the descendants of wheat and rye hybrids. These materials provide valuable genetic resources for studying the structure, activation ...
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