| Autor: |
Verkleij, Frans N., Challa, Hugo |
| Předmět: |
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| Zdroj: |
Physiologia Plantarum; Oct88, Vol. 74 Issue 2, p284-293, 10p |
| Abstrakt: |
Thus source leaf temperature did not affect the distribution of assimilates between source and sink, in contrast to sink temperature. After 24 h at a sink temperature of 30°C, 20% more 14C was exported to plant parts below the source leaf than with a sink temperature of 20°C. at the expense of carbon remaining in the source. During the day less starch and more structural dry matter was formed at a source leaf temperature of 30°C than at 20°C. After a complete day/night cycle, however, there was no difference between the treatments. Starch was the primary carbon source during the night, and the decline in the rate of export coincided with the depletion of starch. Thus the decline in the rate of export at a source leaf temperature of 25 or 30°C at 12 h after the start of the night was due to the depletion of starch at that time. Similarly, at 20°C export could continue until the end of the night as the starch degradation supplied assimilates during the whole night. |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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