Genetic Regulation of Flavonoid Content in Seeds and Seedlings of Melilotus alba
نویسندگان
چکیده
Chemical analysis of seeds and seedlings of the CC and cc genotypes in Melilotus ulhu indicated that these alleles affect flavonoid biosynthesis. The CC seed coats contained orientin and iso-orientin, which were absent in the cc seed coats. The pigment responsible for the red pigmentation of young seedlings of CC genotypes was a cyanidin glycoside. The embryos of seeds of both the CC and cc genotypes contained a flavonoid tentatively identified as a 6,8-di-C-pentosylapigenin. The observation that 3',4'-dihydroxyflavonoids were absent in the cc genotype and that 4'-hydroxyflavonoids were present in both genotypes indicated that the C/c alleles controlled the 3'-hydroxylation of flavonoids. The C/c alleles did not, however, control 3'-hydroxylation of cinnamic acids since caffeic acid was detected in both genotypes.
منابع مشابه
Effect of High Pressure on Germination of Seeds (medicago Sativa and Melilotus Alba)
An increase in percentage germination is obtained with seeds of Medicago sativa exposed for 1 to 10 minutes at 2000 atmospheres hydraulic pressure at 20 degrees C., dried, and germinated after 30 days; and from seeds of Melilotus alba under the same conditions of pressure, when exposed for 5 to 30 minutes, dried, and germinated 30 days later. Exposures to 500 atmospheres pressure was less advan...
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