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Archive for November, 2010

Variance components and Estimation of genetic covariance between relatives

Variance components The variance of a random variable is the expectation of the squared deviation between a random variable (X) and its expectation (E). The expectation of a discrete random variable is obtained by weighting the possible outcomes X with their probabilities (in the case of a dice the probability is 1/6 for each outcome). [...]

November 26th, 2010
Topic: Crop Science, Plant breeding Tags: None

Mating designs in plant breeding

The application areas for mating designs are the selection of genotypes as variety parents in breeding of hybrid varieties and synthetic varieties and the estimation of genetic variance components for optimizing the design of breeding programs. The requirements for factoral and diallel designs are – each female must be able to be mated with several [...]

November 14th, 2010
Topic: Crop Science, Plant breeding Tags: None