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Efficiency of Early Selection for Yield Performance in Wheat
Author(s) -
Peters B.,
Spanakakis A.,
Weber W. E.
Publication year - 1991
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.1991.tb00536.x
Subject(s) - selection (genetic algorithm) , yield (engineering) , economic shortage , biology , microbiology and biotechnology , agronomy , statistics , mathematics , computer science , physics , artificial intelligence , linguistics , philosophy , government (linguistics) , thermodynamics
Selection for yield in early generations is difficult, mainly due to a shortage of seed. In the breeding company Fr. Strube the breeder uses three‐way crosses and first selects for yield between F 2 ′‐derived lines in the F 4 ′. The generations are called F 1 , F 2 ′, etc., because the first generation is already segregating. The efficiency of this selection was checked in the F 5 ′ and F 6 ′. For this purpose F 3 ′‐derived progenies, corresponding to poor and good yielding bulks in F 4 ′, were selected. In later generations the average yield of the group of strains with good yield in the F 4 ′ was 4 % (F 5 ′) and 3 % (F 6 ′) higher, respectively, than the mean of the strains with low yield in the F 4 ′. Strains with very low yielding potential can easily be discarded in the F 4 ′. The risk of discarding lines with a very high yield is minimal. Selection for yield in the F 4 ′ was as effective as in the F 5 ′. The importance of testing F 2 ′‐derived bulks in the F 4 ′ is not only based on the assessment of yield but also on the possibility of reliable intensive selection through recording visual characters (height, resistance against diseases) in a second environment in parallel to the single plant progenies.