Leaf Abscission Zones in Molinia caerulea (L.) Moench, the Purple Moor Grass |
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Authors: | SALIM, KAMARIAH A. CARTER, PETER L. SHAW, STANLEY SMITH, CHRISTOPHER A. |
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Affiliation: | Department of Biological Sciences, Manchester Polytechnic Manchester M1 5GD, UK |
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Abstract: | Leaf separation and loss in the grass Molinia caerulea (L.)Moench was investigated using scanning electron microscopy.Leaf senescence and subsequent shedding of leaves was precededby the formation of a leaf abscission zone. The zone containscells which have more than doubled their wall thickness to greaterthan 0-4 µm. The line of fracture associated with thezone principally followed the middle lamellae, leaving intactcells on the fracture faces. Molinia should prove an interestingmodel in which to study abscission processes in the Gramineae. Molinia caerulea, leaf abscission zone, electron microscopy |
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