Inheritance of glucose content in tubers of diploid potato families
2004
Jakuczun, Henryka | Zimnoch-Guzowska, Ewa
During two consecutive years 17 unselected families of diploid potatoes in comparison to their parents and standard cultivars were assessed for glucose content in tubers. Glucose content was evaluated using Potato Test Strips in tubers stored at 10 C, 4 C, and 4 C followed by reconditioning at 18 C. Distribution of glucose content in families indicated that the trait is inherited in a polygenic way. Transgressive individuals in families in comparison to respective parents were found in all treatments applied. Maternal effect on glucose content in tubers was found in one out of three tested families after cold storage (4 C) and the same families after reconditioning. Analysis of variance showed significant influence of year on the trait. Significance of GCA and SCA showed that both additive effects and genetic interactions are involved in determining of glucose content in tubers in all applied treatments. It was found that glucotests can be recommended for evaluation of chipping ability in early stages of selection.
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