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A diallel crossing approach aimed on selection for ripening time and yield in breeding of new strawberry ( F ragaria × ananassa D uch.) cultivars
Author(s) -
Bestfleisch Markus,
Möhring Jens,
Hanke MagdaViola,
Peil Andreas,
Flachowsky Henryk
Publication year - 2014
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/pbr.12120
Subject(s) - ripening , diallel cross , cultivar , biology , selfing , trait , yield (engineering) , horticulture , fragaria , growing season , selection (genetic algorithm) , agronomy , population , artificial intelligence , materials science , demography , programming language , hybrid , sociology , computer science , metallurgy
The extension of the ripening season in open field production is of high economic interest for strawberry growers. Therefore, targeted breeding for extreme early or late ripening cultivars with high yield potential is of particular interest. Thirteen strawberry cultivars were crossed in a reciprocal way without selfing, and the 144 resulting F 1 populations were evaluated in a field trial over a period of two consecutive years. The data were analysed using a mixed‐model approach adapted for diallel crossing designs using SAS 9.3. The variability in the crossing approach is mainly based on the general combining ability ( GCA ) of the cultivars (additive effects). Specific and reciprocal combining abilities (non‐additive effects) appear less important. The highest GCA s for the trait M arketable Yield were found for the cultivars ‘ P olka’ and ‘ Y amaska’. The trait E arliness is bilateral with significantly low GCA s for early ripening in ‘ C lery’ and ‘ D aroyal’ and significantly high GCA s for late ripening in ‘ Y amaska’ and ‘ F lorence’. Crosses with these cultivars are likely to deliver populations with both high yield and an extended ripening period.