ISSN:
1573-5060
Keywords:
Capsicum species
;
plant breeding
;
doubled haploid
;
tobacco etch virus
;
pepper mottle virus
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary Doubled haploid peppers resistant in France to specific strains of tobacco etch virus (TEV) and pepper mottle virus (PeMV) were indexed for resistance to USA strains of TEV and PeMV. The doubled haploids were inoculated when four to six true leaves had developed. The peppers were indexed after an incubation period, and a disease index was calculated. Plants without viral symptoms were reinoculated. Plants challenged to TEV were inoculated four times. Doubled haploids, TEV-resistant in France, were susceptible to the USA strain by the fourth screening. All doubled haploid lines showed TEV symptoms after the fourth inoculation. Two doubled haploids lines, no. 4 and no. 8, had about 6% resistance to TEV after the fourth inoculation. Doubled haploid line no. 5 was 100% resistant to PeMV. The results confirm that the USA PeMV and the USA TEV isolates are different pathotypes than the French ones used originally to screen the doubled haploids. In addition, the use of doubled haploids to identify pathotypes of PeMV and TEV is demonstrated.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00023769
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