Genome map for the novel oilseed meadowfoam: The E locus and QTL affecting fatty acid concentrations
2001
Knapp, Steven J. | Crane, Jimmie M. | Sureeporn Kate-ngam(Ubon Ratchathani Univ., Ubon Ratchathani (Thailand). Faculty of Agriculture. Dept. of Agronomy)
Demand for meadowfoam (Limnanthes alba Benth.) oil is increasing along with the demand for new cultivars to boost seed yields and profits. One of our aims is to increase the supply of meadowfoam oil by increasing seed yield and oil content. We are using molecular breeding tools to facilitate this process. A genetic map was produced using inter-subspecific (L. alba ssp. alba x L. alba ssp. versicolor) backcross progeny, inbred parent lines (OMF40-11 and OMF64) and amplified fragment length polymorphisms (AFLPs). The map is presently comprised of one phenotypic marker (E) and 103 AFLP markers spanning five linkage groups (x=5). The genetic map was used for detection of quantitative trait loci (QTLs) underlying fatty acid concentrations of L. alba. L. alba ssp. versicolor produces more erucic acid and less dienoic acid than L. alba ssp. alba. The fatty acid profile difference between those two subspecies is caused by the macromutation E and possibly by QTLs. We will report the findings of a QTL analysis to address this question and describe how this knowledge is being used for molecular breeding in meadowfoam.
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Эту запись предоставил Kasetsart University