A Physiological Study of Developing Pods and Leaves of Honey Mesquite

Photosynthetic and respiratory rates of developing pods and fully expanded leaves of mesquite were assayed during 1972 to determine whether current photosynthesis was sufficient to supply the demands of the developing pods or whether reserve carbohydrates from the roots were required. Net photosynth...

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Published in:Journal of range management 1974-05, Vol.27 (3), p.202-203
Main Authors: Wilson, R. T., D. R. Krieg, Dahl, B. E.
Format: Article
Language:English
Subjects:
Developmental biology
Dry matter accumulation
Herbicides
Leaves
Photosynthesis
Plant roots
Respiration
Seed pods
Supply
Surface areas
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container_title Journal of range management
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creator Wilson, R. T.
D. R. Krieg
Dahl, B. E.
description Photosynthetic and respiratory rates of developing pods and fully expanded leaves of mesquite were assayed during 1972 to determine whether current photosynthesis was sufficient to supply the demands of the developing pods or whether reserve carbohydrates from the roots were required. Net photosynthetic rates of developing pods were very low when expressed as a function of dry weight, whereas the rates of CO2evolution were high, suggesting a very active metabolic rate. Leaf photosynthetic rates were comparable to reported rates for other tree species. From the data collected, it was concluded that current photosynthate could not supply the amount of organic matter needed for pod development on trees possessing heavy fruiting loads, and reserve carbohydrates would be needed during the period of maximum rate of dry matter accumulation by the pods.
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subjects Developmental biology
Dry matter accumulation
Herbicides
Leaves
Photosynthesis
Plant roots
Respiration
Seed pods
Supply
Surface areas
title A Physiological Study of Developing Pods and Leaves of Honey Mesquite
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