抄録
This experiment was carried out to make clear the mechanism of variation of flower colour in Petunia hybrida frorn the qhemical stand point, using the method of Paper Partition Chromatography. The results are sumrilerized as follows. 1 . P. P.C. proved to be found four anthocyanins-malvidin, malvidin diylucoside, petunidin and petunidin monoglycoside and three fiavones rutip, lsoquercitrin and quercetin in the flower of Petunia. 2. Blue strains generally contained the complexsalt of malvidin and its glycoside, but the co-pigment effect could not recognized. 3. Red strains generally contained petunidin and its glycoside, but the difference between pink and salmon depended on that of co-pigments. 4. No constitutional difference of pigments existed between coloured and white parts of variegated flower, and coloured or white flower. 5. Petunidin were widely found in the flowers of F1 hybrids, but the production of petunidin djd not suppress that of malvidin. 6. White was generally recognized as a recessive character in the flower of hybridization, but it frequently affected to induce colotirs after hybridization with the chromogeris, which it contained.
