Markers associated with stalk number and suckering in sugarcane colocate with tillering and rhizomatousness QTLs in sorghum

Jordan, D. R., Casu, R. E., Besse, P., Carroll, B. C., Berding, N. and McIntyre, C. L. (2004) Markers associated with stalk number and suckering in sugarcane colocate with tillering and rhizomatousness QTLs in sorghum. Genome, 47 5: 988-993. doi:10.1139/G04-040


Author Jordan, D. R.
Casu, R. E.
Besse, P.
Carroll, B. C.
Berding, N.
McIntyre, C. L.
Title Markers associated with stalk number and suckering in sugarcane colocate with tillering and rhizomatousness QTLs in sorghum
Journal name Genome   Check publisher's open access policy
ISSN 0831-2796
Publication date 2004
Sub-type Article (original research)
DOI 10.1139/G04-040
Volume 47
Issue 5
Start page 988
End page 993
Total pages 6
Place of publication Ottawa
Publisher Natl Research Council Canada
Collection year 2004
Language eng
Subject C1
300203 Plant Improvement (Selection, Breeding and Genetic Engineering)
620106 Sugar
Abstract Two important factors influencing sugar yield, the primary focus of sugarcane plant breeding programs, are stalk number and suckering. Molecular markers linked to both of these traits are sought to assist in the identification of high sugar yield, high stalk number, low-suckering sugarcane clones. In this preliminary mapping study, 108 progeny from a biparental cross involving two elite Australian sugarcane clones were evaluated at two sites for two years for both stalk number and suckering. A total of 258 DNA markers, including both restriction fragment length polymorphisms (RFLPs) and radio-labelled amplified fragments (RAFs), were scored and evaluated using single-factor analysis. Sixteen (7 RFLPs and 9 RAFs) and 14 (6 RFLPs and 8 RAFs) markers were identified that were significantly associated (P < 0.01) with stalk number and suckering, respectively, across both years and sites. The seven and six RFLP markers associated with stalk number and suckering, respectively, were generated by eight different RFLP probes, of which seven had been mapped in sorghum and (or) sugarcane. Of significant interest was the observation that all seven RFLP probes could be shown to be located within or near QTLs associated with tillering and rhizomatousness in sorghum. This observation highlights the usefulness of comparative mapping between sorghum and sugarcane and suggests that the identification of useful markers for stalk number and suckering in sugarcane would be facilitated by focussing on sorghum QTLs associated with related traits.
Keyword Biotechnology & Applied Microbiology
Genetics & Heredity
Comparative Mapping
Suckering
Sugarcane
Sorghum
Tillering
Cultivar Saccharum Spp.
Genetic Dissection
Aflp Markers
Map
Rflp
Andropogoneae
Construction
Maize
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

 
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Created: Wed, 15 Aug 2007, 04:12:26 EST