Verticillium Wilt Tolerance in Some Cotton Genotypes

Impacts of Verticillium Wilt on Photosynthesis Rate, Lint Production, and Fiber Quality of Greenhouse-Grown Cotton (Gossypium hirsutum)

“…The day that first symptoms were seen on individual plants was recorded. Plants were rated for foliar disease severity based on the 0-5 scale as described by [36,37]. The 0-5 scale defines foliar symptoms as follows: 0 = 0%, no disease symptoms; 1 = 1-25%, minimum chlorosis at lower leaves; 2 = 26-50%, plant with chlorosis on lower and middle leaves; 3 = 51-75%, plant shows well developed symptoms of chlorotic, necrotic, and twisted terminal leaflets on one or more branches; 4 = >75%, more than three leaves show severe symptoms of chlorosis/necrosis; 5 = 100%, a complete plant death.…”

Determination of Tolerance Levels of Cotton Genotypes Obtained from F6-F7 Generation against Verticillium Wilt Disease Caused by Verticillium dahliae Kleb.

“…FL (mm) FS (g tex -1 ) Simsek and Sahin (1980) and Yelin and Ersan (1985) reported that VW negatively affected fiber quality and besides fiber technological properties were not well in resistant varieties. Kechagia and Xanthpoulus (1998) and Azaddisfani and Zangi (2007) revealed that FL was effected fewer than VW, variation of FF was substantially dependent on varieties and effect VW on FS changed according to the varieties. Aguado et al (2010) who reported that in natural infested disease differences among the genotypes were significant in variance analysis regarded with fiber characteristics.…”