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Marker‐Assisted Selection as a Strategy for Increasing the Probability of Selecting Superior Genotypes
Author(s) -
Knapp Steven J.
Publication year - 1998
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/cropsci1998.0011183x003800050001x
Subject(s) - selection (genetic algorithm) , citation , crop , library science , information retrieval , computer science , biology , artificial intelligence , ecology
,particularly in long range or recurrent selection experi- ments (Beavis, 1994, 1997; Bulmer, 1971; Dudley, 1993; Marker-assisted selection (MAS) has been shown, in theory, to Gimelfarb and Lande, 1994a,b, 1995; Knapp et al., 1993; produce greater selection gains than phenotypic selection for normally Knapp, 1994b; Lande and Thompson, 1990; Lande, distributed quantitative traits. Theory is presented in this paper for 1992; Zhang and Smith, 1992, 1993). estimating the probability of selecting one or more superior genotypes by MAS (PrMAS ). This paramater was used to estimate the cost effi-,MAS should be most effective in the early generations ciency of MAS relative to phenotypic selection (Ec). Prof delaying selection (Geiger, 1984; Snape and Simpson, decreases the resources needed to accomplish a selection goal for a 1984; Sneep, 1977, 1984; Weber, 1984). Selection is fre- low to moderate heritability trait when the selection goal and the quently delayed to later generations,because,heritabili- selection intensity are high. ties and the statistical accuracy,of progeny,mean,esti- mates tend to increase as the number of replications, generations, sites, and years of testing increase. T