Anomalous vascular bundle sheath structure in Alloteropsis semialata leaf blades

Anomalous vascular bundle sheath structure in Alloteropsis semialata leaf blades

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Alloteropsis semialata (R.Br.) Hitchc.

of the Paniceae, would be expected to exhibit typical eupanicoid leaf anatomy with a single bundle sheath of large parenchymatous cells with specialized chloroplasts and radially-arranged chlorenchyma.Specimens from South Africa showed the following bundle-sheath and mesophyll deviations from the generalized panicoid model: 1.bundle sheath is usadisk website double; 2.

inner bundle sheath is composed of large cells house of lashes blessings with specialized chloroplasts; 3.outer sheath consists of many smaller cells with few, or without chloroplasts; 4.outline of the third- order bundles is tall and narrow; 5.

chlorenchyma is not radially arranged.Other specimens of A.semialata, however, were found to have a large-celled outer bundle sheath devoid of chloroplasts and with indistinctly radiate chlorenchyma.