Abstract
The fruits of Uchchey and Korala, two common Indian varieties of Momordica charantia L. have the same length and diameter in initial stages. But with age the rate of lengthwise growth becomes higher in Karola, which differs from Uchchey by its larger size and much elongated shape. The major cause of their difference in size and shape is the higher cell number of Karola in its axial direction from the earliest stages of development, and their rapid transverse division during maturation. Differentiation of xylem bundles of the pericarp starts at the middle and apical parts of the ovary. The courses of differentiation of xylem in the middle, apical and basal bundles are bidirectional, basipetal and acropetal, respectively.
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