نتایج جستجو برای: inbred line
تعداد نتایج: 438494 فیلتر نتایج به سال:
The third most important food crop worldwide, potato (Solanum tuberosum L.) is a tetraploid outcrossing species propagated from tubers. Breeders have long been challenged by polyploidy, heterozygosity, and asexual reproduction. It has been assumed that tetraploidy is essential for high yield, that the creation of inbred potato is not feasible, and that propagation by seed tubers is ideal. In th...
T h e n u m b e r o f resistance genes in soybean to soybean cyst nematode (SCN) Heterodera glycines was est imated using progeny f rom a cross of 'Williams 82' x 'Hartwig' (derived f rom 'Forrest '~ x PI 437.654) screened with a four th-genera t ion inbred nematode line der ived f rom a race 3 field popula t ion o f SCN. Numbers o f females developing on roots o f inoculated seedlings were ass...
THAT mouse Mecca, the Jackson Laboratory, has repeatedly pioneered in bringing mouse genetics to its present state. There was George Snell’s NobelPrize-winning work on histocompatibility, Roy Stevens’ work on embryonal carcinoma, Tibby Russell’s on hematopoiesis, and many others (reviewed by Paigen 2003a,b). It has also been the site of several important methodological innovations. First and mo...
Eimeria spp. are a group of highly successful intracellular protozoan parasites that develop within enterocytes. Eimeria maxima from the chicken is characterized by high immunogenicity (a small priming infection gives complete immunity to subsequent homologous challenge) and naturally occurring antigenically variant populations that do not completely cross-protect. In this study we examined the...
Components of quantitative resistance in sunflower (Helianthus annuus) to Plasmopara halstedii, the pathogen causing downy mildew, were investigated. Percentage infection, latent period, sporulation density and reduction of hypocotyl length were compared on two sunflower lines showing different levels of quantitative resistance in the field infected with different P. halstedii strains of races ...
that some of the inbreds continued to contribute substantially to hybrids marketed in the USA. For example, Historically important public inbred lines continue to play an imB73 and Mo17 were used in about 28% of all seed portant role in maize (Zea mays L.) improvement in many different breeding programs. Their continued use means they have undergone planted in the USA in 1979. This fell to 12.8...
The major difference between QTL analysis using inbred-line crosses vs. outbred populations is that while the parents in the former are genetically uniform, parents in the latter are genetically variable. This distinction has several consequences. First, only a fraction of the parents from an outbred population are informative. For a parent to provide linkage information, it must be heterozygou...
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