Publication Date
1985
Location
Kyoto Japan
Description
Herbage legumes are very important for forage production in Sweden. One of the main problems when growing red clover and lucerne is their susceptibility to diseases of which the most important are stem nematodes, verticillium wilt, clover rot and root rot. Breeding for improved disease resistance has for a long time been one of the principal objectives in breeding programmes. The first successful result was obtained when a red clover cultivar resistant to stem nematodes was released. By the development of efficient laboratory, screening methods it is nowadays possible to introduce nematode resistance in all new cultivars of red clover and lucerne. Verticillium wilt of lucerne can be very damaging where lucerne is grown intensively. Resistant cultivars have been successfully produced in recurrent selection programmes. It has been possible to combine high dry matter yield with resistance to verticillium wilt as well as stem nematodes. Root-rot on red clover causes severe losses. Root rot is a complex disease where several different fungi are involved in combination with cultivation practices not suitable for red clover. The complex nature of the disease makes breeding for resistance difficult. One method, based on selection in the field after natural infection, has shown positive results after three generations of selection.
Citation
Andersson, Bengt, "Some Results of Selection for Disease Resistance in Herbage Legumes at Svalof, Sweden" (1985). IGC Proceedings (1985-2023). 14.
(URL: https://uknowledge.uky.edu/igc/1985/ses2/14)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Some Results of Selection for Disease Resistance in Herbage Legumes at Svalof, Sweden
Kyoto Japan
Herbage legumes are very important for forage production in Sweden. One of the main problems when growing red clover and lucerne is their susceptibility to diseases of which the most important are stem nematodes, verticillium wilt, clover rot and root rot. Breeding for improved disease resistance has for a long time been one of the principal objectives in breeding programmes. The first successful result was obtained when a red clover cultivar resistant to stem nematodes was released. By the development of efficient laboratory, screening methods it is nowadays possible to introduce nematode resistance in all new cultivars of red clover and lucerne. Verticillium wilt of lucerne can be very damaging where lucerne is grown intensively. Resistant cultivars have been successfully produced in recurrent selection programmes. It has been possible to combine high dry matter yield with resistance to verticillium wilt as well as stem nematodes. Root-rot on red clover causes severe losses. Root rot is a complex disease where several different fungi are involved in combination with cultivation practices not suitable for red clover. The complex nature of the disease makes breeding for resistance difficult. One method, based on selection in the field after natural infection, has shown positive results after three generations of selection.
