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Stomatal characters and diurnal variation in two cultigroups of cowpea Vigna unguiculata (L.) Walp


, : Stomatal characters and diurnal variation in two cultigroups of cowpea Vigna unguiculata (L.) Walp. Environment and Ecology 14(1): 86-88

Stomatal characters and diurnal variation were studied in 2 cowpea cultivars representing cultigroups, Unguiculata (cv. C-4) and Sesquipedalis (cv. C-7). A higher mean stomatal frequency/mmsuperscript 2 was observed on the lower than on the upper leaf surface in C-4 than inC-7. No significant difference in stomatal size, guard cells size and pore size were recorded between the leaf surfaces. However, C-7 had somewhat larger stomatal size and pore dimension than C-4.

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