On conversion of secondary photosynthates in the tillering zone and basal internode after the grain ripeness

摘要

The differences in conversion of secondary photosynthates and content of organic compounds in basal internode and tillering zone of two rice cultivars of various morphotypes were studied during the phase of complete ripeness using the radioisotope method. It was found out that 13% of the flowing photosynthates were included into polymer fractions (starch, proteins, lipids and cell wall substances) of extensive (tall) cv. Dalnevostochnyi and 16% of intensive (dwarf) cv. Dalrice-11. The discovered differences of metabolism are discussed in connection with rice ability to postgenerative tilleting.