First Report of Globodera tabacum Infecting Tobacco Plants in Quebec, Canada
نویسندگان
چکیده
منابع مشابه
Tobacco Resistance to Globodera tabacum.
Two flue-cured tobacco cultivars, VA-81 and PD-4, resistant to Globodera tabacum solanacearum were tested for resistance to G. tabacum in field and greenhouse experiments. A G. tabacum-susceptible broadleaf cultivar CT86-4 was used for comparison. In a greenhouse screening procedure, VA-81 and PD-4 had, respectively, 1 of 24 and 0 of 24 plants with any cysts visible on the root systems. All 24 ...
متن کاملHatch and Reproduction of Globodera tabacum tabacum in Response to Tobacco, Tomato, or Black Nightshade.
The effects of broadleaf tobacco, tomato, and black nightshade on juvenile hatch and reproduction of Globodera tabacum tabacum were determined in laboratory and greenhouse experiments. Root exudates from nightshade stimulated greater egg hatch than those from either 'Rutgers' tomato or '86-4' tobacco. Hatch was greater at higher proportions of root exudates for all three plant species. Root exu...
متن کاملBroadleaf Tobacco Yield Loss in Relation to Initial Globodera tabacum tabacum Population Density.
Field microplot experiments were conducted from 1995 to 1998 to determine the relationship between fresh shoot weight of stalk-cut broadleaf and shade-grown cigar wrapper tobacco types (Nicotiana tabacum L.) and initial density of Globodera tabacum tabacum second stage juveniles (J2) per cm(3) soil. Total shoot weight was negatively correlated with initial nematode densities of 12.3 to 747.3 J2...
متن کاملShade Tobacco Yield Loss and Globodera tabacum tabacum Population Changes in Relation to Initial Nematode Density.
Field microplot experiments were conducted from 1987 to 1992 to determine the relationship between fresh weight leaf yield of shade tobacco (Nicotiana tabacum) and initial density of Globodera tabacum tabacum (encysted J2 per cm(3) soil). Initial nematode densities of 0.1 to 1,097 J2/cm(3) soil were negatively correlated with leaf yield, total shoot weight, and normalized plant height 5 to 6 we...
متن کاملGenetics of Burley and Flue-Cured Tobacco Resistance to Globodera tabacum tabacum.
Genotypes of burley (cultivars B-21 and B-49), flue-cured (line VA-81 and cultivar PD-4), and Connecticut broadleaf (cultivar C9) tobacco (Nicotiana tabacum) resistant (R) or susceptible (S) to the tobacco cyst nematode Globodera tabacum tabacum were crossed. F1 progeny of burley and susceptible broadleaf were selfed and backcrossed to produce additional progeny for evaluation of resistance in ...
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ژورنال
عنوان ژورنال: Plant Disease
سال: 2006
ISSN: 0191-2917,1943-7692
DOI: 10.1094/pd-90-0527b