PHYSIOTECHNICAL STUDIES OF SORGHUM CARRIED OUT AT THE POSTGRADUATE COLLEGE (MEXIC0) 1

Abstract

The purpose of this paper is to present some of the results obtained in crop physiology research at the Graduate College, using sorghum as an example. These results emphasize the need for the use of physiological, anatomical and morphological characters, as criteria for the selection and evaluation, in order to attain increased efficiency in breeding. This requires by necessity a multidisciplinary approach.
A fast, inexpensive and indirect method is presented for the identi­fication of low-tannin grain sorghum genotypes, which correlates well (r = 0.92**, and r = 0.89**) with the vanillin-HC1 and prusian blue test, respectively.
Preliminary results of growth analyses of sorghum hybrids and their parental lines grown together in evaluation trials, seem to support the notion that hybrid's performance relates more to that of the female than to the male parent.