The carbon balance of flowers of Diplacus aurantiacus (Scrophulariaceae)

K. Williams, George W Koch, H. A. Mooney

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Measurements and modeling of photosynthesis, respiration and growth in flowers of Diplacus aurantiacus, a semidrought-deciduous shrub, indicate that they can provide 18%-25% of their total carbon requirements through photosynthesis of flower parts. Daily photosynthetic carbon fixation exceeds daily respiratory CO2 loss during most non-fruiting stages of development. However, this carbon gain fails to meet the requirements for new biomass construction during bud growth and corolla expansion. During fruiting stages, insufficient carbon is fixed to fully supply either respiration or growth. The calyx performs most of the flower's photosynthesis throughout the life of the flower. However, during stages of fruit development, the contribution of the ovary to flower photosynthesis may equal that of the calyx.

Original languageEnglish (US)
Pages (from-to)530-535
Number of pages6
JournalOecologia
Volume66
Issue number4
DOIs
StatePublished - Jul 1985
Externally publishedYes

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Scrophulariaceae
carbon balance
flower
flowers
photosynthesis
carbon
calyx
fruiting
respiration
carbon fixation
Calvin cycle
bud
corolla
shrub
shrubs
fruit
buds
carbon dioxide
biomass
modeling

ASJC Scopus subject areas

  • Ecology

Cite this

The carbon balance of flowers of Diplacus aurantiacus (Scrophulariaceae). / Williams, K.; Koch, George W; Mooney, H. A.

In: Oecologia, Vol. 66, No. 4, 07.1985, p. 530-535.

Research output: Contribution to journalArticle

Williams, K. ; Koch, George W ; Mooney, H. A. / The carbon balance of flowers of Diplacus aurantiacus (Scrophulariaceae). In: Oecologia. 1985 ; Vol. 66, No. 4. pp. 530-535.
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