Genotype x fertilizer interactions in slash pine: variation phosphate (/sup 33/P) incorporation

Journal Article · Mon Mar 01 04:00:00 EST 1976 · For. Sci.; (United States)

OSTI ID:7326003

Jahromi, S T; Smith, W H; Goddard, R E

Variation in /sup 33/P incorporation in acid-soluble (AS), nucleic acid (NA) and phospholipid-phosphoprotein (PL) phosphate fractions in roots were investigated for three families of slash pine (Pinus elliottii) under five N/P fertilizer regimes. Height and weight growth and P accumulation as acid soluble P in shoot terminals were also characterized for comparisons. Phosphate incorporation was largely determined by the P status of the seedlings as higher levels were assayed in organic fractions of seedlings under low P than when grown with high P. Both N level and family also affected incorporation. Interactions suggested that some families accumulate P differentially under various fertilizer treatment regimes. Certain families also translocated more P to shoots. Highest P incorporation in shoot terminals was under the N/sub 50/P/sub 50/ treatment. Families that accumulated more P in roots generally showed higher P activities in the shoot terminal. Families also interacted with fertilizer treatment in this measure. Incorporation of P in the acid-soluble fraction of shoot terminals was closely correlated with height growth and top fresh weight. This study indicates that in slash pine seedlings early selection for phosphate incorporation into metabolic fractions can be conducted as a correlated response to growth. Because of the effect of fertility regime and the interactions of these with families, selections should be conducted under nutrient regimes typical of the expected growth medium of the trees.

• OSTI ID: 7326003
• Journal Information: For. Sci.; (United States), Journal Name: For. Sci.; (United States) Vol. 22:1; ISSN FOSCA
• Country of Publication: United States
• Language: English

Related Subjects

510101 -- Environment
Terrestrial-- Basic Studies-- Radiometric Techniques-- (-1989)
54 ENVIRONMENTAL SCIENCES
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553000 -- Agriculture & Food Technology
59 BASIC BIOLOGICAL SCIENCES
60 APPLIED LIFE SCIENCES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOMASS
CONIFERS
DAYS LIVING RADIOISOTOPES
ENERGY SOURCES
FERTILIZERS
GENOTYPE
GROWTH
ISOTOPES
LIGHT NUCLEI
NUCLEI
NUTRIENTS
ODD-EVEN NUCLEI
OXYGEN COMPOUNDS
PHOSPHATES
PHOSPHORUS 33
PHOSPHORUS COMPOUNDS
PHOSPHORUS ISOTOPES
PINES
PLANTS
RADIOISOTOPES
RENEWABLE ENERGY SOURCES
RETENTION
ROOT ABSORPTION
ROOTS
TRANSLOCATION
TREES
UPTAKE