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Composite Breeding Methods and the DSM System in Cereals 1
Author(s) -
Jensen Neal F.
Publication year - 1978
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1978.0011183x001800040025x
Subject(s) - germplasm , diallel cross , biology , competition (biology) , breeding program , plant breeding , microbiology and biotechnology , mating , cultivar , mating system , agronomy , ecology , hybrid
The integration of the diallel selective mating system (DSM) is discussed in relation to overall project breeding operations. An overview of composite breeding and the role of competition is given as background. Composite breeding methods are shown to be efficient users of germplasm and effort; cultivars can be created in time periods comparable to other widely used methods. Competition is viewed as a helpful force in plant breeding. Important features of the DSM are a widening of the germplasm base of the breeding project and improved economy of operations. Implementation procedures of the DSM include: a) the objective basis for the system; b) the formation of DSM objective base composites; c) early generation field operations; and d) details of the selective mating option. The supplementary and reinforcing nature of the DSM are stressed relative to other known successful breeding methods.