Characterization of wheat – Psathyrostachys huashanica small segment translocation line with enhanced kernels per spike and stripe rust resistance
| العنوان: | Characterization of wheat – Psathyrostachys huashanica small segment translocation line with enhanced kernels per spike and stripe rust resistance |
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| المؤلفون: | Yi Wang, Wei-Liang Qi, Yao Tang, Daiyan Li, Haiqin Zhang, Houyang Kang, Hao Wang, Zhi-Juan Zhang, Yonghong Zhou, Xing Fan, Lina Sha, Jian Zeng, Wei Zhu, Lili Xu |
| المصدر: | Genome. 59:221-229 |
| بيانات النشر: | Canadian Science Publishing, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, Chromosomal translocation, Plant disease resistance, Biology, Poaceae, 01 natural sciences, Chromosomes, Plant, Translocation, Genetic, 03 medical and health sciences, Genetics, Common wheat, Molecular Biology, Triticum, Disease Resistance, Plant Diseases, Basidiomycota, food and beverages, Stripe rust, General Medicine, Plant Breeding, Phenotype, 030104 developmental biology, Psathyrostachys huashanica, Hybridization, Genetic, 010606 plant biology & botany, Biotechnology |
| الوصف: | Psathyrostachys huashanica Keng (2n = 2x = 14, NsNs), a distant wild relative of common wheat, possesses rich potentially valuable traits, such as disease resistance and more spikelets and kernels per spike, that could be useful for wheat genetic improvement. Development of wheat – P. huashanica translocation lines will facilitate its practical utilization in wheat breeding. In the present study, a wheat – P. huashanica small segmental translocation line, K-13-835-3, was isolated and characterized from the BC1F5 population of a cross between wheat – P. huashanica amphiploid PHW-SA and wheat cultivar CN16. Cytological studies showed that the mean chromosome configuration of K-13-835-3 at meiosis was 2n = 42 = 0.10 I + 19.43 II (ring) + 1.52 II (rod). GISH analyses indicated that chromosome composition of K-13-835-3 included 40 wheat chromosomes and a pair of wheat – P. huashanica translocation chromosomes. FISH results demonstrated that the small segment from an unidentified P. huashanica chromosome was translocated into wheat chromosome arm 5DS, proximal to the centromere region of 5DS. Compared with the cultivar wheat parent CN16, K-13-835-3 was highly resistant to stripe rust pathogens prevalent in China. Furthermore, spikelets and kernels per spike in K-13-835-3 were significantly higher than those of CN16 in two growing seasons. These results suggest that the desirable genes from P. huashanica were successfully transferred into CN16 background. This translocation line could be used as novel germplasm for high-yield and, eventually, resistant cultivar breeding. |
| تدمد: | 1480-3321 0831-2796 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b856caa99e8e169fa3a3b8d86856934 https://doi.org/10.1139/gen-2015-0138 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....1b856caa99e8e169fa3a3b8d86856934 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14803321 08312796 |
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