Analysis of genomic and functional RFLP derived markers associated with sucrose content, fiber and yield QTLs in a sugarcane (Saccharum spp.) commercial cross
| Autor: | J. A. Bressiani, Laura Helena Marcon Teixeira, Antonio Augusto Franco Garcia, Maria Marta Pastina, Eugênio C. Ulian, Anete Pereira de Souza, M. A. P. Bidoia, Luciana Rossini Pinto |
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| Rok vydání: | 2009 |
| Předmět: |
Genetics
Expressed sequence tag biology Crop yield food and beverages Plant Science Horticulture Quantitative trait locus biology.organism_classification Saccharum chemistry.chemical_compound chemistry Gene interaction Genetic marker Molecular marker Restriction fragment length polymorphism Agronomy and Crop Science |
| Zdroj: | Euphytica. 172:313-327 |
| ISSN: | 1573-5060 0014-2336 |
| DOI: | 10.1007/s10681-009-9988-2 |
| Popis: | Expressed sequence tags derived markers have a great potential to be used in functional map construction and QTL tagging. In the present work, sugarcane genomic probes and expressed sequence tags having homology to genes, mostly involved in carbohydrate metabolism were used in RFLP assays to identify putative QTLs as well as their epistatic interactions for fiber content, cane yield, pol and tones of sugar per hectare, at two crop cycles in a progeny derived from a bi-parental cross of sugarcane elite materials. A hundred and twenty marker trait associations were found, of which 26 at both crop cycle and 32 only at first ratoon cane. A sucrose synthase derived marker was associated with a putative QTL having a high negative effect on cane yield and also with a QTL having a positive effect on Pol at both crop cycles. Fifty digenic epistatic marker interactions were identified for the four traits evaluated. Of these, only two were observed at both crop cycles. |
| Databáze: | OpenAIRE |
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