Upland cotton is tetraploid--meaning it hasfour sets of chromosomes--and most of the related species with reniform
nematode resistance are diploid, having two sets of chromosomes," explains Stetina.
GENETIC VARIATION WITHIN THE RIBOSOMAL DNA REGION OF THE RENIFORM
Female epigynum usually with a median hood, spermathecae small, globular, oval or reniform
orientalis males observed that had the reniform
spot united with a medial band in the costal region and an incomplete postmedial band, while others had this reniform
spot separated from the medial band and the post-medial band complete (Sanchez-Soto et al.
8 cm, linear-elliptic, broadest in the middle, the bases attenuate, the apexes cuneate to acute, the margins irregularly sinuate, the indument similar to fertile laminae; rachises abaxially and adaxially terete, stramineous with dark dots, essentially glabrous but with a few scales abaxially; veins irregularly anastomosing, adaxially some ending in dark hydatodes; sori submarginal, oblong to reniform
, 3-5 X 2-3 mm, in one row on each side of midrib, not sunken, without scaly paraphyses; sporangia with long pedicels, 0.
Occiput convex or flat; antennal postpedicel usually globular, reniform
, conoid or budlike, with indistinct apex, or with slender apical projection, and with subapical or apical, rarely dorsal, arista-like stylus inserted sometimes in apical incision 8
At higher magnification, the cellular infiltrate is polymorphic, comprising variable numbers of histiocyte-like cells, with reniform
, convoluted, or grooved nuclei and abundant cytoplasm (Figure 9).
In addition, plants of this family can be easily identified by their lenticels on the trunk and branches, aromatic bark and leaves with peppery taste, simple and alternate-distichous leaves, flowers with fleshy perianth, three sepals (rarely two) and berry fruit containing reniform
seeds (Salazar, 20O6).
He's studying a serious cotton pest, the reniform
nematode, which destroys about 10 percent of Mississippi's cotton crop each year.
The seeds are fairly large, reniform
in shape with a distinctive carunculate surface.
Forewing ground color blackish brown with an obviously triangular patch between medial and subterminal lines; basal line black, just represented at front part; antemedial line black and wavy, inconspicious, excurved to orbicular spot, then incurved to inner margin; medial line black, poorly discernible and sinuated, excurved to reniform
spot, then incurved to inner margin; postmedial line black, sinuated and strongly excurved to [M.
Spores of the three Cyrtogonellum species were either reniform
or globose in shape (Fig.