Studies on pollen morphology of bitter gourd (Momordica charantia L.)

Studies on pollen morphology of bitter gourd (Momordica charantia L.)

2008

A:PS

Two objectives in this research were to use the pollen characteristics identification the similarity of 40 varieties and to identify pollen activity effect on fruit set of bitter gourd (Momordica charantia L.). Pollen grains from 40 varieties of bitter gourd were examined by using a scanning electron microscope. The view of equatorial plane on pollen was prolate, of polar plane was three cracks spheroid and had tricolporate. On the exine surface of pollen, the sculpturing was regulate and entirely covered the lumiba. Seventeen examined items from the pollen surface and the sculpture of pollen exine were subjected to factor analysis with principal component solution. The contribution of the first three principal components came to 81.88% of the total variation. The pollen surface and sculpture characters were used to discriminate among bitter gourd varieties. The first principal component was created mainly by exine characters, including sculpturing and the lumiba, and was the most useful factor for discriminating bitter gourd varieties. Results of 40 bitter gourd varieties on the first and the second principal component could discriminate the bitter gourd varieties: (1) the epicarp white with pearl-like tubercles on the surface; (2) the epicarp was green with linear tubercles on the surface; (3) the epicarp was green with pearl-like tubercles on the surface; (4) wildly bitter gourd varieties and so on. By the above results explained the pollen character still permissible to discriminate the epicarp color and tubercles on surface of bitter gourd varieties.

v.10(1):1-20, SEED & NURSERY

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