Strategies to breed sterile leucaena for Western Australia

Authors

  • Daniel Real Department of Primary Industries and Regional Development, South Perth, WA, Australia.
  • Yong Han School of Veterinary and Life Science, Murdoch University, Murdoch, WA, Australia.
  • C. Donovan Bailey Department of Biology, New Mexico State University, Las Cruces, NM, USA.
  • Saipriyaa Vasan School of Veterinary and Life Science, Murdoch University, Murdoch, WA, Australia.
  • Chengdao Li Department of Primary Industries and Regional Development, South Perth, WA, Australia. School of Veterinary and Life Science, Murdoch University, Murdoch, WA, Australia.
  • Marieclaire Castello Department of Primary Industries and Regional Development, South Perth, WA, Australia.
  • Sue Broughton Department of Primary Industries and Regional Development, South Perth, WA, Australia.
  • Alexander Abair Department of Biology, New Mexico State University, Las Cruces, NM, USA.
  • Sam Crouch Department of Primary Industries and Regional Development, Broome, WA, Australia.
  • Clinton Revell Department of Primary Industries and Regional Development, South Perth, WA, Australia.

DOI:

https://doi.org/10.17138/tgft(7)80-86
Abstract How to Cite

Abstract

Keynote paper presented at the International Leucaena Conference, 1‒3 November 2018, Brisbane, Queensland, Australia.

Strategies to breed sterile leucaena for Western Australia include plant breeding and biotechnology tools to generate sterile lines at both the tetraploid and triploid ploidy levels. For tetraploids, the main target species is the commercial Leucaena leucocephala, that is well known for its potential as a high-quality, productive and persistent forage. Gene editing technologies (CRISPR) will be utilized to edit out flowering genes and develop a non-flowering L. leucocephala. For triploids, the strategy is to cross tetraploid species (L. leucocephala and/or L. diversifolia) with diploid species to generate sterile triploid hybrids. The diploid parents will include species that have good forage attributes such as L. collinsii, L. macrophylla, L. shannonii and L. pulverulenta. Several of these triploid crosses have already been created by the Department of Primary Industries and Regional Development (Perth, Western Australia) and will be evaluated in the Kimberley and Pilbara regions of Western Australia for their agronomic performance and sterility. Vegetative propagation will be required for the tetraploid gene-edited non-flowering L. leucocephala. Triploids can either be vegetatively propagated, once generated, or generated via a seed production nursery.

How to Cite

Real, D., Han, Y., Bailey, C. D., Vasan, S., Li, C., Castello, M., Broughton, S., Abair, A., Crouch, S., & Revell, C. (2019). Strategies to breed sterile leucaena for Western Australia. Tropical Grasslands-Forrajes Tropicales, 7(2), 80–86. https://doi.org/10.17138/tgft(7)80-86

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Published

2019-05-31

Issue

Vol. 7 No. 2: Special Issue ILC2018 No. 1 - May 2019

Section

ILC2018 Session 1: Germplasm resources of leucaena