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| Xie,Quan; Kang,Houyang; Sparkes,Debbie Louise; Tao,Shan; Hu,Zhiqin; Xu,Lili; Fan,Xing; Sha,Lina; Zhang,Haiqin; Wang,Yi; Zeng,Jian; Zhou,Yonghong. |
| English grain aphid (EGA, Sitobion avenae Fabricius) is an important pest in wheat (Triticum aestivum L.). To develop EGA-resistant varieties, introducing the desirable genes from related species is regarded as an efficient avenue. In this study, the F1, F2 and F3 plants derived from the cross of EGA-susceptible wheat-Psathyrostachys huashanica Keng ex Kuo amphiploid (PHW-SA, AABBDDNsNs) and EGA-resistant triticale (Zhongsi 828, AABBRR) were analyzed for EGA resistance. Consequently, PHW-SA was moderately susceptible while Zhongsi 828 and their F1 hybrids were immune, suggesting that the resistance is dominant. All the F2 plants showed high resistance or immunity over two years, indicating that EGA resistance genes are more likely carried by the rye... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chromosome constitutions; Genetic resources; Wide cross. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000300004 |
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| Zhang,Hai-Qin; Yang,Rui-Wu; Zhang,Li; Ding,Chun-Bang; Zeng,Jian; Zhou,Yong-Hong. |
| The phylogenetic relationships of 15 taxa from Hystrix and the related genera Leymus (NsXm), Elymus (StH), Pseudoroegneria (St), Hordeum (H), Psathyrostachys (Ns), and Thinopyrum (E) were examined by using the Giemsa C-banded karyotype. The Hy. patula C-banding pattern was similar to those of Elymus species, whereas C-banding patterns of the other Hystrix species were similar to those of Leymus species. The results suggest high genetic diversity within Hystrix, and support treating Hy. patula as E. hystrix L., and transferring Hy. coreana, Hy. duthiei ssp. duthiei and Hy. duthiei ssp. longearistata to the genus Leymus. On comparing C-banding patterns of Elymus species with their diploid ancestors (Pseudoroegneria and Hordeum), there are indications that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: C-banding; Elymus; Genome; Hystrix; Leymus; Triticeae. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000300015 |
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