词条 | Photosynthate partitioning |
释义 |
The partitioning of these sugars depends on multiple factors such as the vascular connections that exist, the location of the sink to source, the developmental stage, and the strength of that sink. Vascular connections exist between sources and sinks and those that are the most direct have been shown to receive more photosynthates than those that must travel through extensive connections. This also goes for proximity those closer to the source are easier to translocate sugars to.[2] Developmental stage plays a large role in partitioning, organs that are young such as meristems and new leaves have a higher demand, as well as those that are entering reproductive maturity—creating fruits, flowers, and seeds.[3] Many of these developing organs have a higher sink strength. Those with higher sink strengths receive more photosynthates than lower strength sinks. Sinks compete to receive these compounds and combination of factors playing in determining how much and how fast sinks receives photosynthates to grow and complete physiological activities. References1. ^http://homepages.uwp.edu/higgs/lect9plant.pdf 2. ^Hopkins, William G., and Norman P. A. Hüner. Introduction to Plant Physiology. Hoboken, NJ: John Wiley & Sons, 2009. Print 3. ^http://homepages.uwp.edu/higgs/lect9plant.pdf 1 : Photosynthesis |
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