A diallel crossing approach aimed on selection for ripening e and yield in breeding of new strawberry (Fragaria x ananassa Duck.) cultivars

作者：Bestfleisch Markus; Moehring Jens; Hanke Magda Viola; Peil Andreas; Flachowsky Henryk^*

来源：Plant Breeding, 2014, 133(1): 115-120.

DOI：10.1111/pbr.12120

• Fragaria
• ripening period
• yield
• general combining ability
• specific combining ability

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 GCAs for the trait Marketable Yield were found for the cultivars Polka%26apos; and Yamaska%26apos;. The trait Earliness is bilateral with significantly low GCAs for early ripening in Clery%26apos; and Daroyal%26apos; and significantly high GCAs for late ripening in Yamaska%26apos; and Florence%26apos;. Crosses with these cultivars are likely to deliver populations with both high yield and an extended ripening period.

• 出版日期2014-2