COMPARISON OF AGRICULTURAL CHARACTERISTICS AMONG THE SUBSTITUTION LINES FOR MITOCHONDRIAL GENOME IN CUCUMBER

Previously it was reported that the mitochondrial genomes in Cucumis species were transmitted paternally through sexual reproduction.
In view of the practical importance of nuclear-cytoplasm interaction of cucumber, we developed the substitution lines for the mitochondrial genome by the continuous backcrossing method using the recurrent parents as the seed parents.
Two mitochondrial types were used as the donors and two inbred lines with different sex phenotypes were used as recipients.
The mitochondrial types originated from a wild strain and a native Japanese cultivar.
The two recipients inbred used were parental inbred lines of hybrid varieties for slicing, and their sex phenotypes were gynoecious and monoecious types, respectively.
We detected that the mitochondrial DNAs were transmitted paternally in the six back crossing progenies using the PCR detection.
Several agricultural characteristics were observed in two crop seasons in Japanese green house cultivation, but we could not find any remarkable differences among these substitution lines.
The agricultural importance of this phenomenon were discussed.

II International Symposium on Cucurbits

S. Matsuura, H. Mizusawa, K. Kadowaki

nuclear-cytoplasmic interaction

https://doi.org/10.17660/ActaHortic.2002.588.45