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Characterization of intergeneric hybrids of Erianthus rockii and Saccharum using molecular markers

文献类型： 外文期刊

作者： Aitken, K. 1 ; Li, J. 2 ; Wang, L. 2 ; Qing, C. 2 ; Fan, Y. H. 3 ; Jackson, P.;

作者机构： 1.CSIRO, Div Plant Ind, St Lucia, Qld 4067, Australia

2.CSIRO, Div Plant Ind, St Lucia, Qld 4067, Australia; Acad Agr Sci, Yunnan Sugarcane Res Inst, Kaiyuan 661600, Yunnan, Peoples R China; CSIRO, Plant Ind, Davies Lab, Aitkenvale, Qld 4814, Australia; Univ Queensland, Cooperat Res Ctr Sugar Ind Innovat Biotechnol, St Lucia, Qld 4072, Australia

3.CSIRO, Div Plant Ind, St Lucia, Qld 4067, Australia; Acad Agr Sci, Yunnan Sugarcane Res Inst

关键词： AFLP;Erianthus rockii;intergeneric hybrids;Saccharum;sugarcane

期刊名称：GENETIC RESOURCES AND CROP EVOLUTION （ 影响因子：1.524； 五年影响因子：1.713 ）

ISSN： 0925-9864

年卷期： 2007 年 54 卷 7 期

页码：

收录情况： SCI

摘要： Erianthus rockii, a wild relative of sugarcane, is drought and cold tolerant, and both are potentially important agronomic traits to the sugarcane industry worldwide. As such it is of interest as a source of parental germplasm to sugarcane breeders and is currently being used in sugarcane introgression programs in both China and Australia. To date morphological characters have been used to verify the putative hybrids produced. Two crosses were generated between two different Saccharum species and two E. rockii accessions. Over 400 AFLP markers were used to identify the intergeneric hybrid progeny as well as determine hybrid diversity. Both crosses generated hybrids but efficiency levels were very different and are probably related to the different Saccharum parent used in each cross. Cross 1 was between a Saccharum officinarum and E. rockii and generated 100% hybrid progeny. Cross 2, however, was between a sugarcane hybrid (S. officinarum x Saccharum spontaneum) and E. rockii and only 10% of the progeny were intergeneric hybrids. Inheritance of markers in the progeny was analysed and for both crosses there were equal numbers of markers from both parents indicating n + n transmission of chromosomes. This is the first verification of E. rockii hybrids with molecular markers. It may now be possible to exploit genes of value from E. rockii in sugarcane breeding programs.

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