INHERITANCE AND HERITABILITY IN F₁ GENERATION OF POTATO HYBRIDS

The genetic effects on potato properties were analyzed using six parental combinations (Ausonia, Brda, Dobrin, Jelica, Morene, Svatava), in five crossing combinations.
The study was conducted on four genotypes of F₁ generation in each crossing combination.
Field experiments using the hybrid material were carried out in 1993 – 1995 in the experimental field of Kaona, belonging to the Potato Research Center at Guca, Yugoslavia.
The following potato properties were studied: duration of vegetation period, number of stems per plant, stem height, yield, number of tubers per plant, average tuber mass, and dry matter and starch contents.
By biometric processing of obtained phenotype values for these properties, the manner and degree of their inheritance in hybrid progeny were determined.
It was found that the manner of inheritance of all the potato properties differentiated depending on clonal families of F₁ generation.
High values for heritability were obtained for studied physiological, morphological, productive and technological properties.
Duration of vegetation period (h²= 98.6%) and starch contents (h²= 97.9%) were the most stable properties – as they were largely determined by the genotype so that their phenotype was affected by the genotype in a small degree by ecological conditions.
The results were that productive tuber properties (tuber yields and size) were affected most by ecological factors.

I Balkan Symposium On Vegetables and Potatoes

Z. Bugarcic, B. Jovanovic, A. Djokic, S. Prodanovic

genotype, phenotype, variance, dominated, intermediate

https://doi.org/10.17660/ActaHortic.1997.462.38