Publication Date
1993
Description
Experiments were conducted in controlled conditions to examine the influences of phytochrome on assimilate partitioning between stolons and branches and to determine the effects on plant moq>hogcncsis in white clover (Trifolium repens L.). Far-red (FR) irradiated plants partitioned more 14C-assimilates to petioles of both the main stolon and branches and less to the nodulated COOis than did control plants. Results clearly demonstrated that FR-irradiated plants developed longer petioles and long internodes. Moreover, the branching rate decreased, which induced a lower portion of dry weight allocated to branches. However, the sink strength of the branches which were developing remained high in FR-treated plants, due to the high sink strength of petioles. The ecological significance of the results is discussed.
Citation
Robin, Ch; Varlet-Grancher, C; Gastal, F; and Guckert, A, "Phytochrome Control of Assimilate Partitioning in White Clover" (2024). IGC Proceedings (1993-2023). 15.
https://uknowledge.uky.edu/igc/1993/session8/15
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Phytochrome Control of Assimilate Partitioning in White Clover
Experiments were conducted in controlled conditions to examine the influences of phytochrome on assimilate partitioning between stolons and branches and to determine the effects on plant moq>hogcncsis in white clover (Trifolium repens L.). Far-red (FR) irradiated plants partitioned more 14C-assimilates to petioles of both the main stolon and branches and less to the nodulated COOis than did control plants. Results clearly demonstrated that FR-irradiated plants developed longer petioles and long internodes. Moreover, the branching rate decreased, which induced a lower portion of dry weight allocated to branches. However, the sink strength of the branches which were developing remained high in FR-treated plants, due to the high sink strength of petioles. The ecological significance of the results is discussed.
