Light and scanning electron microscopic studies of flower development inLindenbergia macrostachya Benth. (Scrophulariaceae) |
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Authors: | Devendra K Awasthi Ramaveer Rawat Adesh Kumar Vishnu Kumar |
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Institution: | (1) Department of Botany, M.M. P-G. College, 201204 Modinagar, India;(2) Department of Botany, Meerut University, 250005 Meerut, India |
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Abstract: | All the floral primordia are homologous to leaves in their development inLindenbergia macrostachya. The sepals follow an anterior to posterior sequence of initiation. The petals and stamens are initiated almost simultaneously
but sequentially in order of petals followed by stamens. There is no sign of development of fifth posterior stamen. p ]The
calyx tube is formed by interprimordial growth followed by zonal growth. The combined interprimordial growth between the petal
primordia and growth on the abaxial side of stamen primordia results in the formation of upper corolla tube whereas lower
corolla tube is formed only by zonal growth. The zonal growth extends below the bases of stamen primordia also due to which
they become epipetalous. The placentae arise from the carpellary margins, move inwards and get fused in the lower half and
remain free in the upper part of the ovary. Thus the ovary appears biloeular with axile plaeentation in the lower haler and
unilocular with parietal placentation in the upper half. |
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Keywords: | Flower development Lindenbergia macrostachya Scrophulariaceae |
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