Recurrent selection

Japanese: 循環選抜 - じゅんかんせんばつ（英語表記）recurrent selection

This is one of the selection methods used in breeding, and refers to the operation of repeatedly selecting and crossbreeding to accumulate superior genes. It is a selection technique developed for the breeding of corn, which is easy to self-pollinate and cross-pollinate, and has been applied mainly to outcrossing crops. First, several superior individuals are selected from the test material, and in the next generation, mutual crossbreeding or natural crossbreeding between the individuals is carried out. The hybrid seeds are cultivated, and the same selection and crossbreeding are repeated in successive generations. There are various types of recurrent selection, such as phenotypic selection, general combining ability recurrent selection, specific combining ability selection, and reciprocal recurrent selection.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

品種改良で実施している選抜方法の一つで，選抜と交雑とを繰り返して，優良遺伝子を集積しようとする操作をいう。自殖も他殖も容易なトウモロコシの育種で開発され，おもに他殖性作物に応用されてきた選抜技術である。まず供試材料から優良個体を複数選抜し，次の世代で個体間の相互交配や自然交雑を行う。この交雑種子を栽培して，順次，後の世代にわたって同様の選抜と交雑とを繰り返していく。循環選抜には表現型選抜法，一般組合せ能力循環選抜法，特定組合せ能力選抜法，相反循環選抜法などがある。

出典　株式会社平凡社世界大百科事典第２版について　情報

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