Effect of translocations from Aegilops speltoides Tausch on resistance to fungal diseases and productivity in common wheat

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• 作者：N. V. Petrash ; I. N. Leonova ; I. G. Adonina ; E. A. Salina
• 关键词：wheat ; introgression lines ; fungal diseases ; agronomically important traits ; Ae. speltoides
• 刊名：Russian Journal of Genetics
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：52
• 期：12
• 页码：1253-1262
• 全文大小：
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Human Genetics; Animal Genetics and Genomics; Microbial Genetics and Genomics;
• 出版者：Pleiades Publishing
• ISSN：1608-3369
• 卷排序：52

文摘

The effect of alien genetic material on resistance to fungal diseases and productivity traits was studied in the T. aestivum/Ae. speltoides common wheat introgression lines. The analysis of genomic composition of the lines by means of cytological Spelt1, pSc119.2, and pAs1 markers detected the presence of translocations in the chromosomes 5BL, 6BL, and 7D. The assessment of lines on susceptibility to the leaf rust and powdery mildew during three field seasons demonstrated that the lines containing the translocation fragments in the chromosomes 5B and 7D are completely resistant to the leaf rust population specific to the West Siberian region. The presence of the Ae. speltoides genetic material in the chromosome 7D provided a high level of resistance to powdery mildew. A positive effect of the translocation in the chromosome 5BL on such traits as the number of spikelets and grains per ear was demonstrated. A decrease in the thousand-grain weight was registered in all introgression lines independently of the chromosomal localization of alien chromatin. No negative effect on the studied traits was detected in lines with the translocation in the chromosome 7D except for thousand-grain weight, allowing them to be used as a source of disease resistance genes.