These sub-populations may be managed at different breeding directions at the beginning, e.g. for wood quality, for broad range of environmental condition, etc.
A concept of multiple population breeding system is to divide a large breeding population into a number of sub-populations for different breeding directions and objectives, such as for different breeding/planting zones, environmental adaptability and different products (growth, stem quality and wood quality) (Namkoong et al., 1980, 1988).
The factors contributing to the micro-epidemiology of malaria, including the substantial variation in malaria risk between neighboring villages 7, 8 or even households 9 are still not fully understood but include variation in distance from the nearest mosquito breeding site, wind direction, and human genetic factors.
"Inside cerebrally, I'm saying, here is a horse that can help change the direction of breeding in America, maybe the world.
It has been, however, much more difficult to detect evidence for breeding density shaping the direction or intensity of selection on female morphological traits, including body size (Fleming and Gross 1994; Seamons et al. 2007).
Our results might be used to ascertain in what direction to steer breeding in order to improve the flavour characteristics of tomato ecotypes.
Finding from this study would indicate a possible direction for rice breeding programme aiming at improving the quality of rice crop.
We discuss factors that will likely influence the extent of plastic and evolutionary responses, including patterns of environmental changes, species' life history characteristics including generation time and breeding system, and degree and direction of gene flow.
Although further studies will be required to grasp the complex factors underlying organoleptic quality in tomato, our results might be used to understand in what direction to steer breeding in order to improve flavour characteristics of tomato ecotypes.
