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Genetic architecture may profoundly influence the ability of adaptive traits to spread between species via introgressive hybridization. Here, we examine the genomic location of quantitative trait loci (QTL) associated with pollen sterility and morphological traits distinguishing two annual sunflowers, Helianthus annuus and H. debilis ssp. cucumerifolius.(More)
The contribution of epistasis to 15 morphological traits differentiating two annual sunflowers (Helianthus annuus and H. debilis ssp. cucumerifolius) and to hybrid pollen sterility was estimated in a first generation backcross (BC1) mapping population. Analysis of digenic interactions among quantitative trait loci (QTLs) with significant main effects(More)
The structural system of prestressed concrete (PC) voided slab deck is intermediate between plate and girder. Therefore, the conventional design method is based on the assumption that the system is similar to the plate system or to the grid system. In this paper, the structural behavior of a continuous PC voided slab deck with three spans was analyzed by(More)
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