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.
Capsule oblong-obovoid, 2.5-3.2 mm long, 1.4-2.0 mm wide, apex apiculate, tomentose, few sessile glandular hairs below, only apex outwardly chartaceous and inwardly with thin corneous
endocarp extending ca.
hepatic spine on each side of carapace.
Third to fifth pereopods moderately stout, similar in structure but slightly increasing in relative length from third to fifth; dactyli subconical, 0.3-0.4 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 0.7-0.9 length of propodi in third and fourth pereopods, 0.5-0.6 in fifth pereopod; meri and ischia unarmed.
The statistically significant parameters which served to distinguish the sex in these species were the length of the culmen and tomium, length of the lower corneous
beak and the cloaca.
During the reproductive season, males develop one or more terminal elements on the gonopods (first pleopods) that are corneous
. These males are referred to as form I.
Operculum (Figs 2F-H) 0.3 mm in diameter, corneous
and light brown.
In sorghum, iodine is less indicative of phenotype since iodine binding is reduced in lines with corneous
endosperm (Cagampang and Kirleis, 1985).
Can easily be recognized by the characteristic pattern of lighter, nontranslucent specks oriented in spiral lines on a darker, semi-translucent, corneous
background, as well as alternating zones of lighter and darker close-set axial riblets on the upper side of the shell with only microscopic spiral striation on the base.
The nine qualitative characters (Table 2) recorded were leaf and midrib pigmentation, shape of the inflorescence, glume and grain color, glume covering, type of grain (corneous
and lustrous), and presence or absence of subcoat.
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