| Autor: |
Hasegawa, Shigeaki, Koba, Keisuke, Tayasu, Ichiro, Takeda, Hiroshi, Haga, Hiroki |
| Předmět: |
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| Zdroj: |
Journal of Plant Research; Jun2003, Vol. 116 Issue 3, p183-188, 6p, 1 Diagram, 5 Charts |
| Abstrakt: |
Carbon autonomy of current-year shoots in flowering, and of current-year shoots plus 1-year-old shoots (1-year-old shoot system) in fruiting of Siberian alder (Alnus hirsuta var. sibirica) was investigated using a stable isotope of carbon, 13C. The current-year shoot and 1-year-old shoot systems were fed 13CO2 and the atom% excess of 13C in flowers and fruits was determined. The majority of photosynthate allocated to flower buds was originally assimilated in the leaves of the flowering current-year shoots. Of all the current-year shoots on fruiting 1-year-old shoots, only those nearest to the fruits allocated the assimilated photosynthate to fruit maturation. These results indicate that the current-year shoots and 1-year-old shoot systems are carbon-autonomous units for producing flowers and maturing fruits, respectively. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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