Quantitative assessment of the morphogenetic efficiency in strawberry
Fragaria × ananassa Duch.
Jadwiga Żebrowska, Magdalena Dyduch
Department of Genetics and Horticultural Plant Breeding
University of Life Sciences in Lublin
Akademicka 15, 20-950 Lublin, Poland
A quantitative assessment of the morphogenetic capability of strawberry was performed. In the experiment,
three genotypes of strawberry Fragaria × ananassa Duch. were tested, including two cultivars:
‘Plena’ and ‘Kent’, and one breeding clone no. ‘394’. Morphogenetic
efficiency was expressed by the mean number of microplants produced by the explant of progeny
combinations F1 in two subsequent subcultures. Progeny F1
was obtained after crossings, which were carried out according to Griffing’s method 3, with the use of the parental
genotypes given above. Quantitative parameters: combining ability and the effect of reciprocal crosses estimated
in the progeny F1 allowed to assess the genetic control of the analysed feature.
The high positive effect of reciprocal crosses showed that in ‘Plena’ the morphogenetic capability
is genetically controlled mainly by nuclear genes. On the other hand, aspects of extranuclear
inheritance of the analysed trait were observed in ‘Kent’, which proved a weak explant ability of the progeny
combination F1 to produce microplants. This resulted in the high negative
effect of reciprocal crosses for that cultivar.
Żebrowska J., Dyduch M., 2009. Quantitative assessment of the morphogenetic efficiency in strawberry
Fragaria × ananassa Duch. Folia Horticulturae 21/2: 53-64.