The experiment got offspring of salt tolerant alfalfa by double recurrent selection and one massed selection,then chose 106 good individual plants from them and mensurated the general combining ability of salt-tolerance.

In order to shorten core length and maintain average head weight,two cycles of recurrent selection were conducted in initial cabbage population C0 derived from fourteen cabbage hybrids.

Four japonica restorer lines with the restoring genes for the genetic-cytoplasmic male sterility including Jijing 85,Ji 524,E180 and E385 have been successfully developed through the breeding method of recurrent selection,using eight japonica PTGMS lines and 28 elite japonica varieties or lines selected from the north cold rice growing area in China as the breeding materials.

A novel two-swarm based PSO algorithm (TSPSO) with roulette wheel selection was proposed to solve optimal power flow problem.

Influence of oil selection cycles of BHO population on chemical compositions,in vitro ruminal digestion characteristics and fermentation traits of HOC grain;