High temperatures during cotton flowering and early boll development can detrimentally affect cotton yield. Current commercial cultivars do not have pronounced tolerance to elevated temperatures, and improved methods of screening for thermo-tolerance are needed. The effect of heat stress on cotton has been measured with several different methods including membrane leakage, chlorophyll fluoresce...

Annexins are assumed to be involved in regulating cotton fiber elongation, but direct evidence remains to be presented. Here we cloned six Annexin genes (AnxGb) abundantly expressed in fiber from sea-island cotton (G. barbadense). qRT-PCR results indicated that all six G. barbadense annexin genes were expressed in elongating cotton fibers, while only the expression of AnxGb6 was cotton fiber-sp...

Corynespora cassiicola attackes diverse agriculturally important plants, including soybean and cotton, in the US. It is a reemerge pathogen on cotton in southeastern US. Whole genome sequences of four cotton and one soybean isolate from Tennessee were used to develop single nucleotide polymorphism markers for cotton isolates. Cotton isolates had little diversity at the genome level and very lit...

The genetic distance of 11 cotton genotypes varying in heat tolerance was studied using RAPD markers. Fifty-three random decamer primers were used for the estimation of genetic distance. Among the 53 RAPD primers, which were custom synthesized by GeneLink Inc., UK, 32 were polymorphic and 21 were monomorphic. The 32 polymorphic primers produced 273 fragments, with a mean of 8.3 fragments per pr...

originally found in Mississippi in 1980 and by 2002 was estimated to infest 32.4% of the cotton hectarage in Cotton (Gossypium hirsutum L.) lint yields have not changed apMississippi (Lawrence et al., 2002). Although genetics preciably during the last decade. Because more and higher infestations is still probably the predominant reason for the lack of of reniform nematodes (Rotylenchulus renifo...

The plant Gossypium Hirsutum genotypes were grown in Qwshtapa district, Grdmala village, which is 30 kilometres from the centre of Erbil, Iraq. cotton there included Coker 310, Lachata (Iraqi genotypes), Cafko, Dunn 1047, Montana, Stone Ville (USA Bakhtegon, Khdorda, and Vanamin (Iranian genotypes). anatomical investigation demonstrates distinct petioles, midribs, laminas, margin outline shapes...

Cotton is one of the most economically important crops in Iran; hybridization is a means to increase the genetic diversity and obtain new elite cultivars in this crop. We examined agronomic characteristics and molecular genetic diversity in the Opal cotton (Gossypium hirsutum) cultivar and in F(2) progenies. Ten homo-primers and seven hetero-primers of 26 RAPD primers produced 261 reproduc...

Upland cotton (Gossypium hirsutum L.) is an important cash crop that provides renewable natural fiber worldwide. Currently limited genetic base leads to a decrease in upland cotton genetic diversity. Multi-parent advance generation inter-cross (MAGIC) populations can be used to evaluate complex agronomic traits in crops. In this study, we developed an upland cotton MAGIC population. A total of ...

ABSTRACT The objective of this study was to evaluate the quantum yield and concentrations photosynthetic pigments naturally colored cotton genotypes under irrigation with waters different electrical conductivities foliar applications hydrogen peroxide. design used randomized blocks in a 4 × 3 2 factorial arrangement, corresponding four peroxide - H2O2 (0, 25, 50 75 μM), three fiber (‘BRS Rubi’,...