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  • 1
    Electronic Resource
    Electronic Resource
    Sources of resistance to tomato spotted wilt virus (TSWV) in cultivated and wild species of Capsicum (1993)
    Springer
    Euphytica 67 (1993), S. 89-94 
    Details
    ISSN: 1573-5060
    Keywords: Capsicum sp. ; pepper ; tomato spotted wilt virus ; field resistance ; isolate-specific resistance ; disease screening
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A germplasm collection of 70 cultivars and wild species of Capsicum was evaluated for resistance to tomato spotted wilt virus (TSWV) under field (natural inoculum) conditions. Different levels of resistance to the disease caused by this virus were observed among the tested lines. High degree of field resistance was detected in two Capsicum baccatum var. pendulum, two C. chinense, and three C. annuum lines. Controlled greenhouse tests were also carried out to confirm the resistant reaction of these seven field selected lines. These lines were mechanically inoculated with two serologically distinct isolates of TSWV obtained from different geographic regions of Brazil. The two C. chinense lines (‘CNPH 275’ and ‘PI 159236’) were virtually immune against one specific (TSWV-BsB) isolate but were susceptible to another isolate (TSWV-SP) used in this assay. Sources of resistance for both isolates were not found. Our experimental results strongly indicate there exists a number of genetic mechanisms (probably including action of vertical and horizontal genes) to TSWV resistance in Capsicum spp.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00022729
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  • 2
    Electronic Resource
    Electronic Resource
    Inheritance of a resistance specific to tomato spotted wilt tospovirus in Capsicum chinense ‘PI 159236’ (1994)
    Springer
    Euphytica 75 (1994), S. 139-142 
    Details
    ISSN: 1573-5060
    Keywords: Capsicum chinense ; Capsicum annuum ; inheritance ; tomato spotted wilt virus ; tospoviruses ; hypersensitive-like resistance ; resistance ; TSWV ; genetics ; pepper
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Inheritance studies were conducted to determine the genetic basis of resistance in pepper against one Tospovirus isolate classified as tomato spotted wilt virus (TSWV). F1, backcrosses and F2 populations were developed using the resistant parent Capsicum chinense ‘PI 159236’ (CNPH 679) and the susceptible parent C. annuum ‘Magda’ (CNPH 192). Segregation ratios strongly indicated that the resistant response (a localization, hypersensitive-like reaction) to TSWV fits a single-dominant gene model. Under our experimental conditions, the penetrance of this gene was very high. This gene (tentatively named Tsw) is highly effective only against TSWV isolates. The resistance governed by the Tsw gene was not effective against isolates belonging to tomato chlorotic spot virus (TCSV) and groundnut ring spot virus (GRSV), two other previously described Tospovirus species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00024541
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    Paper (German National Licenses)
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