Breeding, importance

Wink, M. 1988. Plant breeding importance of plant secondary metabolites for protection against pathogens and herbivores. Theor. Appl. Gen. 75, 225-... 

Wink, M., Plant breeding Importance of plant secondary metabo-... 

Summer-fall flowering can have certain breeding importance, as flowers develop fully, they blossom well, have viable pollen and set fruits which ripen perfectly (especially in the south). Plants grown from such fruit seeds turn to be earlier maturing than initial cultivars. 

Maintenance of conditions ia the culture environment that keep stress to a minimum is one of the best methods of a voiding diseases. Vacciaes have beea developed agaiast several diseases and more are under development. Selective breeding of animals with disease resistance has met with only limited success. Good sanitation and disiafection of contaminated faciUties are important avoidance and control measure. Some disiafectants are Hsted ia Table 6. Poad soils can be sterilized with burnt lime (CaO), hydrated lime [Ca(OH)2], or chlorine compounds (12). 

An important parameter of any breeder is the breeding ratio (BR) defined as the ratio of the fissile atoms produced to the fissile atoms consumed and given by the simple relation... 

Size of the organic chick is increased by crossing a red hen with a large cockerel such as the Maran. This dual-purpose cross makes a good egg layer and a large table bird, which is important because, if you are breeding your own replacements, 50% of the chicks will be cockerels. 

The most important criteria for selection of breeding plants are quality, yield, and resistance to cold, drought, and the various pests of the area. Seed tea plants have a long economic life and there are known instances of plants over 100 years old. 

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