Abstract:Fusarium species are known to play a role in several diseases of cotton including the seedling disease complex, wilt, and boll rot. Therefore, a mycoflora study was conducted in 1998 in order to identify Fusarium species found in association with cotton roots. A total of 109 samples of cotton seedlings infected with post-emergence damping-off or rotted roots of adult plants were obtained from different cottongrowing areas in Egypt. Forty-six isolates were recovered and were identified
“…are isolated from cotton seedlings (1,8,39,59). Sacc, have been demonstrated (1,8,9,36,59). indicated that most species are of minor significance in the etiology of cotton seedling disease (17,24,36).…”
“…are isolated from cotton seedlings (1,8,39,59). Sacc, have been demonstrated (1,8,9,36,59). indicated that most species are of minor significance in the etiology of cotton seedling disease (17,24,36).…”
“…In Egypt, F. oxysporum was frequently isolated from cotton seedlings infected with damping-off (Aly et al, 1996 andEl-Samawaty, 1999). Also, F. solani was pathogenic for eighty-three percentage of collected isolates (Abd-Elsalam et al, 2006). In another study Johnson et.…”
Cotton breeders in Egypt pay a great attention to development hybrids has resistance to several diseases and pests and give good yield. Pathogenicity tests of four Fusarium species ,namely: Fusarium poae; Fusarium oxysporum; Fusarium subglutinane and Fusarium solani (isolated from diseased cotton seedling). The diseases evaluation had spot line on the susceptibility of thirteen cultivars of Egyptian cotton (Gossypium barbadense L.), including Giza45, Giza90 under greenhouse conditions. The obtained results revealed that at least every cultivar was resistant for one of Fusarium spices. Giza85 was the most susceptible cultivars (26.67; 40; 13.33 and 40 %, respectively) pre-emergence% for all tested Fusarium species. At the same time, Giza88 recorded resistance reaction ( 0.0; 6.67; 20 and 6.67% respectively). Fusarium oxysporum was the most pathogenic species (25.64% seedling death) followed by Fusarium solani and Fusarium poae (18.46 and 17.95%, respectively). The minimum incidence was noted in Fusarium subglutinane (9.74%), compared to 2.56% in check treat.
“…often are the most frequently isolated fungi from cotton seedlings (34,26,47,22,56). Isolates of several species have been demonstrated to be pathogenic (66,22,23,56,1). Symptoms caused by Fusarium spp.…”
This article, adapted from the new book, Cotton, 2nd edition, discusses three types of cotton diseases: seed and seedling, bacterial blight, and vascular wilt. For more information on this topic as well as a comprehensive presentation of many other aspects of cotton from biology to production to marketing, check out the book at https://dl.sciencesocieties.org/publications/books. Earn 1.5 CEUs in Integrated Pest Management by reading this article and completing the quiz at http://www.certifiedcropadviser.org/certifications/self-study/723.
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