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Inheritance of resistance to Colletotrichum acutatum in Fragaria x ananassa


, : Inheritance of resistance to Colletotrichum acutatum in Fragaria x ananassa. Phytopathology 95(4): 405-412

Anthracnose, caused by Colletotrichum acutatum, is a major disease of the octoploid cultivated strawberry, Fragaria x ananassa. The inheritance of high and intermediate level plant resistances to C. acutatum, pathogenicity group 2, was investigated in an 8 x 8 factorial design. A single dominant gene (Rca2) controlled the high-level resistance, although minor genes may also contribute to resistance in cultivars such as Belrubi. The intermediate level of resistance was quantitative and controlled by minor genes. Analysis of 26 genotypes and cultivars from Fragaria spp. showed that the dominant gene was not rare in the germ plasm of F. x ananassa and that anthracnose resistance was also present in other species of Fragaria. These findings have important implications for anthracnose resistance breeding.

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Related references

Denoyes-Rothan, Béatrice.; Guérin, G.; Lerceteau-Köhler, E.; Risser, G., 2008: Inheritance of Resistance to Colletotrichum acutatum in Fragaria x ananassa. ABSTRACT Anthracnose, caused by Colletotrichum acutatum, is a major disease of the octoploid cultivated strawberry, Fragaria x ananassa The inheritance of high and intermediate level plant resistances to C. acutatum, pathogenicity group 2, was inv...

Benoyes Rothan, B., 1997: Inheritance of resistance to Colletotrichum acutatum in strawberry (Fragaria x ananassa). The inheritance of resistance to anthracnose caused by Colletotrichum acutatum was investigated in six strawberry cultivars of varying resistance. Three cultivars chosen as female parents (Elsanta, Darestival and Rosanne) were crossed with three o...

Ballington, J.R.; Shuman, J.L.; Hokanson, S.C.; Smith, B.J.; Gimenez, G., 2002: Breeding strawberries (Fragaria x ananassa) for resistance to anthracnose caused by Colletotrichum acutatum. In the United States, anthracnose fruit and crown rots of strawberry, incited by the fungal species Colletotrichum acutatum, C. fragariae, and C. gloeosporioides, were initially considered 'southeastern' diseases. These diseases are beco...

Lerceteau Kohler, E.; Moing, A.; Guerin, G.; Maucourt, M.; Renaud, C.; Rolin, D.; Roudeillac, P.; Denoyes Rothan, B., 2004: QTL analysis for fruit quality traits and resistance to Colletotrichum acutatum and Phytophthora cactorum in octoploid strawberry (Fragaria x ananassa). Mapping of quantitative trait loci (QTL) controlling components of strawberry (Fragaria x ananassa, 2n=8x=56) fruit quality and resistance to C. acutatum and P. cactorum can be used to provide a better understanding of the genetic control of the t...

Guerin, G.; Lerceteau Kohler, E.; Laigret, F.; Roudeillac, P.; Denoyes Rothan, B., 2003: Development of a SCAR marker linked to dominant gene conferring resistance to Colletotrichum acutatum in strawberry (Fragaria x ananassa). Colletotrichum acutatum is responsible for strawberry anthracnose, one of the main disease of cultivated strawberry in the south-western area of France (60% of the French production). Anthracnose is a polycyclic disease for which no efficient dise...

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Delp B.R.; Milholland R.D., 1980: Evaluating strawberry fragaria ananassa plants for resistance to colletotrichum fragariae. A reliable technique for evaluating strawberry plants (F. .times. ananassa) for resistance to C. fragariae involves spraying the distal half of attached petioles with a 106 conidia per milliliter suspension, incubating at 100% RH (relative humidit...

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