example of mass selection breeding

Crop improvement by deliberate attempt to cross two parents of desirable characters to incorporate such characters in next generations is called breeding. The entire process of pollination, fertilization and regeneration is kept under control and selected parents are allowed to ..

Mass Selection - Desirable plants are selected purely based on phenotype and pooled. They are allowed to be grown in mass in next generation. Further selections are made in 3-4 such generations to consolidate desirable characters by ignoring plants ..

Desirable plants are selected purely based on phenotype and pooled. They are allowed to be grown in mass in next generation. Further selections are made in 3-4 such generations to consolidate desirable characters by ignoring plants with undesirable character at e..

. Polyploidy may be caused by fertilization of an egg by more than one sperm failure of meiosis during gamete formation. Polyploidy can artificially be introduced by a chemical called colchicine or by crossing diploids with tetraploids. Although triploids exhibit sterility, polyploidy is useful in ..

This involves breeding among unrelated animals. To increase the milk yield, Indian cows are crossbred with European breeds like Jersey, Holstein, Red Dane, Brown Swiss et..

White Leghorn, Rhode Island Red, Plymouth rock, Barred Plymouth, Sussex and Minorcha are some of the exotic breeds utilized for the improvement of egg production and yield of meat in our count..

Indigenous dairy breeds produce 6-8 litres of milk a day where as foreign exotic breeds produce 60 litres of milk a day. Even the lactation period (period when milk is produced) is longer. To improve the production of milk of our Indian cows, crossbreeding programmes are conduct..

Pigs are very economical in the sense that they give birth to nearly a dozen piglets at a time. So their number multiplies quickly and therefore, their produce to..

Right from the early days of human civilization man has been breeding selected species that are useful to him. This has produced different varieties of plants and animals. The Result of Selective Breeding..

For breeding to start, the female should be 14-18 months and the male should be 2 yrs of age. For effective breeding it is important to select ewes and ram or goats that are best suited for local conditions. Different breeds are known for the quality of wool ..