GISH characterization of Erianthus arundinaceus chromosomes in three generations of sugarcane intergeneric hybrids
文献类型: 外文期刊
第一作者: Piperidis, Nathalie
作者: Piperidis, Nathalie;Piperidis, George;Chen, Jian-wen;Deng, Hai-hua;Wang, Li-Ping;Jackson, Phillip
作者机构:
关键词: introgression;Erianthus arundinaceus;sugarcane;recombination;GISH
期刊名称:GENOME ( 影响因子:2.166; 五年影响因子:2.474 )
ISSN: 0831-2796
年卷期: 2010 年 53 卷 5 期
页码:
收录情况: SCI
摘要: Within Erianthus, a genus close to Saccharum, the species E. arundinaceus has the potential to contribute valuable traits to sugarcane, including adaptation to biotic and abiotic stresses and ratooning ability. Sugarcane breeders have tried for a long time to use Erianthus species in their breeding programs but until recently were constrained by a lack of fertile Saccharum x Erianthus hybrids. We report here for the first time the chromosome composition of fertile Saccharum officinarum x E. arundinaceus F(1), BC(1) (F(1) x sugarcane cultivar), and BC(2) (BC(1) x sugarcane cultivar) hybrids. The F(1) and BC(2) resulted from n + n chromosome transmission, while the BC(1) resulted from 2n + n transmission. In the BC(1) clones, the number of E. arundinaceus chromosomes ranged from 21 to 30, and in the BC(2) clones, the number ranged from 14 to 15, revealing cases of chromosome loss. No recombination events between Saccharum and Erianthus chromosomes were observed in either the BC(1) or BC(2) clones. The implications of these results for introgression of genes from E. arundinaceus in sugarcane breeding programs are discussed. We propose a strategy to identify the agronomic value of chromosomes from E. arundinaceus and to conduct targeted breeding based on this information.
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