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Origin and Growth of Extinction Bands in Cotton

A.V. Moharir, Lieva Van Langenhove and Paul Kiekens


In this paper, the literature on, the origin and growth of reversal extinction bands in cotton fibres, as observed along their lengths in crossed polarized light in a polarizing light microscope, has been briefly reviewed and extensive data on the frequency of reversal/extinction bands in field matured fibres of a large number of the same cotton varieties, grown at four different locations of growth in India, are presented and discussed. It is observed that the frequency of reversal/extinction bands per centimeter length of cotton fibres for the same varieties grown at different locations remain practically invariant, although their value varies between individual varieties. Apparently, reversals/extinction bands observed along the length of cotton fibres,appear to be genetically determined.

Reprinted from Proceedings of the 1998 Beltwide Cotton Conferences pp. 1583 - 1587
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998