TRUE-SPIRAL ANGLES IN DIPLOID AND TETRAPLOID NATIVE COTTON FIBERS GROWN AT DIFFERENT LOCATIONS

In this article, data on true-spiral angles in respect to the same 12 cotton varieties grown at different agroclimatic locations and in diff erent crop years in India are presented and discussed. It has been con cluded that the values of true-spiral angles are different for differe nt varieties but within a variety remain practically invariant irrespe ctive of the location and environmental conditions of growth. The para meter therefore appears to be genetic in origin. It is believed that t his information can be suitably exploited by progressive cotton breede rs for evolving high-strength cottons, keeping in view the demand of t he modern cotton processing technologies. (C) 1998 John Wiley & Sons, Inc.