Abstract
Morphology of various types of vascular bundles in shoot axis of jowar— the great millet has been studied. Mesocotyl internode and coleoptile have four to six collateral endarch vascular strands. In the vegetative internode three strata of vascular bundles can be recognized. All vascular bundles of internode have a sclerenchyma sheath around them. Peripheral bundles of the internode have a heavy sclerenchyma sheath. The amount of sclerenchyma sheath gradually decreases in the central vascular bundles. Nodal vasculature is most complex. Some bundles in the node lack sclerenchyma sheath, whereas some of them have a radiating parenchyma sheath around them. The fibro-vascular system varies not only in various parts of the axis but also in a radial plane of any given point in the axis.
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