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Production and distribution of assimilate in chick pea cicer arietinum

Production and distribution of assimilate in chick pea cicer arietinum

Australian Journal of Plant Physiology 7(6): 727-736

Chickpea plants were supplied with 14CO2 to various organs; assimilation and distribution of 14C was measured to investigate sources of assimilate for pod development and distribution of assimilate within the plant. Leaves were the main photosynthetic organ; pod wall photosynthesis was not a significant source of assimilate for seed development. Pod wall contributed a significant amount of photosynthate to growth. Individual branches on the plant acted as independent units in terms of photosynthate production and utilization. A gradient by selective defoliation or pod removal did not result in movement of assimilate from one branch to others. Within the individual branch, photosynthate was utilized close to its site of production. Export of 14C-labeled photosynthate was not dependent on age of leaf but was regulated by presence or absence of an axillary pod. Amount of assimilate drawn by a pod from the subtending leaf was dependent on the size of the pod.

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Accession: 006190038

Download citation: RISBibTeXText

DOI: 10.1071/PP9800727

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