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KMID : 0368419890320020101
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Journal of Plant Biology
1989 Volume.32 No. 2 p.101 ~ p.107
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Structure, Ontogeny and Biology of Nectaries in Luffa acutanqqula(L.) Roxb. var. amara(Lam.) Cl.
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HaranIyerK, R. P.
Subramanian, R. B./Inamdar, J. A.
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Abstract
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Luffa acutanqula var. amara exhibits floral and extrafloral nectaries. The floral nectaries are restricted to the torus of the male flowers, while the extrafloral nectaries are observed on foliage leaves, probract, outer surface of calyx and pedicels. The floral nectaries develop from a group of epidermal and sub-epidermal initials which differentiate into secretory and subsecretory zones respectively during further divisions. The extrafloral nectary initiates from a single papillate nectary initial which gives rise to mature nectary comprising stalk layer, secretory and subsecretory tissues. Both the floral and extrafloral nectaries are vascularized. Interactions between insect-visitors and the plant with special reference to their functions are also discussed.
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