Publication Date
1993
Description
An ecologically based breeding method has recently been adopted by the National Subterranean Clover Improvement Programme in Australia. It differs from the traditional pedigree method by allowing F2-derived lines lo continue segregating in the F4 to F6 generations in target environments under regenerating, grazed sward conditions. Advantages of the new method include: (i) assessment of field performance in the early generations; (ii) Inclusion of regeneration processes in selection procedures; (iii) allowing effects of natural selection to act on segregating lines; and (iv) allowing regional testing centres lo become involved in early generation selection. Disadvantages include possible distortion in the direction of selection owing lo successive atypical seasons and the addition of an extra generation to the selection programme. For the method to be successful, care is needed in choice of sites and grazing management.
Citation
Nichols, P.G H., "An Agro-Ecological Approach to Breeding Subterranean Clover (Trifolium subterraneaum L.)" (2024). IGC Proceedings (1993-2023). 9.
https://uknowledge.uky.edu/igc/1993/session12/9
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
An Agro-Ecological Approach to Breeding Subterranean Clover (Trifolium subterraneaum L.)
An ecologically based breeding method has recently been adopted by the National Subterranean Clover Improvement Programme in Australia. It differs from the traditional pedigree method by allowing F2-derived lines lo continue segregating in the F4 to F6 generations in target environments under regenerating, grazed sward conditions. Advantages of the new method include: (i) assessment of field performance in the early generations; (ii) Inclusion of regeneration processes in selection procedures; (iii) allowing effects of natural selection to act on segregating lines; and (iv) allowing regional testing centres lo become involved in early generation selection. Disadvantages include possible distortion in the direction of selection owing lo successive atypical seasons and the addition of an extra generation to the selection programme. For the method to be successful, care is needed in choice of sites and grazing management.
