Carbohydrate translocation and branch autonomy of Pinus ponderosa

Technical Report · Wed Mar 01 00:00:00 EST 1989

OSTI ID:5434195

Houpis, J L.J.; Benes, S E

We are testing the degree of mature branch autonomy in P. ponderosa using {sup 14}CO{sub 2}. Determination of the level of branch autonomy involves four elements that are based on pulsing one branchlet with {sup 14}CO{sub 2}: (1) determine if the canopy position of a branch in the canopy, of which one branchlet is pulsed with {sup 14}CO{sub 2}, affects the amount of {sup 14}CO{sub 2} found in other types of tissue (stems, needles, buds) located on the same branch; (2) determine if the position (apical or lateral) of a branchlet that is pulsed with {sup 14}CO{sub 2}, affects the amount of {sup 14}CO{sub 2} found in other tissue across different branchlets located on the same branch; (3) determine if the position of a branchlet in relation to the pulsed branchlet affect the amount of {sup 14}CO{sub 2} that is traced into the target branchlet; and (4) determine if the length of time between pulsing and sampling of trace tissue affects the detection of {sup 14}CO{sub 2}. 2 refs.

• Research Organization: Lawrence Livermore National Lab., CA (USA)
• Sponsoring Organization: CAU
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5434195
• Report Number(s): UCRL-21227-89; ON: DE90001655
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
AIR POLLUTION
BIOLOGICAL EFFECTS
PINES
PHYSIOLOGY
BIOLOGICAL STRESS
CARBON 14
EXPOSURE CHAMBERS
LEAVES
MORPHOLOGICAL CHANGES
TRACER TECHNIQUES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON ISOTOPES
CONIFERS
EVEN-EVEN NUCLEI
ISOTOPE APPLICATIONS
ISOTOPES
LIGHT NUCLEI
NUCLEI
PINOPHYTA
PLANTS
POLLUTION
RADIOISOTOPES
TREES
YEARS LIVING RADIOISOTOPES
140504* - Solar Energy Conversion- Biomass Production & Conversion- (-1989)