Photosynthetic and respiratory activity of fruiting forms within the cotton canopy. [Gossypium hirsutum L]

Journal Article · Mon Oct 01 00:00:00 EDT 1990 · Plant Physiology; (USA)

DOI:https://doi.org/10.1104/pp.94.2.463· OSTI ID:5941523

Wullschleger, S D; Oosterhuis, D M ^[1]

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1. Univ. of Arkansas, Fayetteville (USA)

The supply of photosynthates by leaves for reproductive development in cotton (Gossypium hirsutum L.). has been extensively studied. However, the contribution of assimilates derived from the fruiting forms themselves is inconclusive. Field experiments were conducted to document the photosynthetic and respiratory activity of cotton leaves, bracts, and capsule walls from anthesis to fruit maturity. The data suggest that cotton fruiting forms, although sites of significant respiratory CO{sub 2} loss, do serve a vital role in the recycling of internal CO{sub 2} and therein, function as important sources of assimilate for reproductive development. The relative capacity of these tissues to assimilate {sup 14}CO{sub 2} was also determined.

• OSTI ID: 5941523
• Journal Information: Plant Physiology; (USA), Vol. 94:2; ISSN 0032-0889
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
COTTON
PHOTOSYNTHESIS
CARBON 14 COMPOUNDS
CARBON DIOXIDE FIXATION
MOISTURE
PLANT TISSUES
RESPIRATION
SENSITIVITY
TRACER TECHNIQUES
BODY
CHEMICAL REACTIONS
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
PHOTOCHEMICAL REACTIONS
SYNTHESIS
TISSUES
551001* - Physiological Systems- Tracer Techniques