Use of bulk hybrid populations to select for adaptation to contrasting environments in subterranean clover

Authors

  • Phillip Nichols
  • Philip Cocks

DOI:

https://doi.org/10.33584/rps.12.2006.3017

Abstract

Population changes were measured over 17 years within a highly variable bulk hybrid population of subterranean clover in a short and long growing season mediterranean-type environment in Western Australia. Flowering time was used as an indicator of evolutionary change and was highly responsive to environment. Markedly different populations evolved, with rapid selection for early flowering at the short growing season site and later flowering at the long growing season site. The use of bulk hybrid populations is suggested as a low-input means of breeding and selecting annual pasture legumes adapted to target environments and farming systems. While adapted genotypes can be selected after just 3 seasons, further adaptive fine-tuning occurs with increased homozygosity. The success of the method hinges on the original parents containing genes for desirable characters, trial sites being representative of target environments and trial management being representative of typical farm practice

Downloads

Published

2006-01-01

How to Cite

Nichols, P., & Cocks, P. (2006). Use of bulk hybrid populations to select for adaptation to contrasting environments in subterranean clover. NZGA: Research and Practice Series, 12, 157–162. https://doi.org/10.33584/rps.12.2006.3017

Issue

Vol. 12 (2006): Advances in Plant Breeding

Section

Past volumes

License

Copyright

This work is licensed under a Creative Commons Attribution-Non Commercial-NoDerivatives 4.0 International License. Rights granted to the New Zealand Grassland Association through this agreement are non-exclusive. You are free to publish the work(s) elsewhere and no ownership is assumed by the NZGA when storing or curating an electronic version of the work(s). The author(s) will receive no monetary return from the Association for the use of material contained in the manuscript. If I am one of several co-authors, I hereby confirm that I am authorized by my co-authors to grant this Licence as their agent on their behalf. For the avoidance of doubt, this includes the rights to supply the article in electronic and online forms and systems.