Abstract：
: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, (13)C. The current-year shoot and 1-year-old shoot systems were fed (13)CO(2) and the atom% excess of (13)C 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.
journal_name
J Plant Resjournal_title
Journal of plant researchauthors
Hasegawa S,Koba K,Tayasu I,Takeda H,Haga Hdoi
10.1007/s10265-003-0085-7subject
Has Abstractpub_date
2003-06-01 00:00:00pages
183-8issue
3eissn
0918-9440issn
1618-0860journal_volume
116pub_type
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