5G): Oligospiral; exterior portion a calcareous disc, attached to an inner and slightly larger corneous layer; external surface off-white (usually encrusted with detritus particles), lacking colour pattern, but with a broad convex spiral ridge more or less at mid-whorl; thinner toward periphery; edge of disc concave, with numerous, close-set, rather unevenly spaced transverse partitions, except along the growing (parietal) margin, which is smooth.
Operculum: Oligospiral; exterior portion a calcareous disc, attached to an inner and slightly larger corneous layer; external surface very shallowly concave, lacking a distinct convex spiral ridge (cf.
7 mm inside above receptacle, acute between veins; capsule endocarp thinly corneous
One corneous hepatic spine on each side of carapace.
Rostrum densely covered with punctations, excavated, strong median carina present; margins thickened, distal halves straight and slightly converging, terminating in rounded corneous spines, proximal halves slightly convex.
Antennal scale broadest at midlength, thickened lateral margin terminating in large corneous spine.
4 length of propodi, each terminating in strong, curved corneous
unguis, flexor surface with about ten corneous
, distally curved, spinules arranged in three or four rows; propodi increasing in length from third to fifth, each with three or four spinules on ventrodistal margin and irregular two rows of spinules on ventral surface in third and fourth, with double row of spinules laterally and single row of sparse spinules mesially in fifth; carpi 0.
dicolorus, the sex-discriminating variables were the culmem (upper beak dorsal line), tomium (upper beak ventral line), lower corneous beak length (Iower beak ventral line) (p<0.
The lower corneous beak length (discriminating sex), showed a positive correlation with the non-discriminant variable of beak marking length (p<0.
Physical kernel properties such as a high proportion of corneous
to floury endosperm, pericarp structure, thick surface wax of the grain and kernel density are associated with grain mold resistance (Glueck and Rooney, 1980).
Grain from TAM Bk-59 has a white epicarp, thick mesocarp, lacks a pigmented testa, and contains a partially corneous
1951), and Bauer and Carter (1986) that maize produced under high fertility gave higher corneous
(horny)/floury kernel endosperm ratio (i.