GENETIC STUDIES OF BARLEY CROSSES INVOLVING TWO BRACHYTIC GENES

概要

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A study was made of the genetic behaviors of some crosses involving the genes for uzu and brachytic characters, with particular reference to the effects of these dwarf genes upon various characters of different types that segregated from these crosses. As the results, it was confirmed that, in spite of the close similarity in their effects, the gene, uz, for uzu character and br for brachytic one were inherited independently, and that an extraordinary dwarf type, called br-uz, arised as their complementary action. Both of the dwarf genes exerted diminutive effects upon the sizes of various plant parts examined, but the magnitude of effects varied considerably with plant parts. Comparison of the uzu and brachytic-type segregates in a few crosses has revealed that the uzu gene may be rather superior at least under our growing condition to the brachytic gene from agricultural point of view. It appears that the diminutive effects of uz and br on various characters in br-uz are on the whole additive, but it may be safe not to draw such a general conclusion as to their complementary action.
日本遺伝学会の論文