student profile: Mr Mahbub Rahman


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Thesis work

Thesis title: Identification and development of crown rot resistant and tolerant wheat using marker assisted recurrent selection

Supervisors: Richard TRETHOWAN , Urmil BANSAL , Philip DAVIES

Thesis abstract:

Crown rot of wheat and barley is caused by the fungus Fusarium pseudograminearum, a stubble-borne pathogen that is most common in no-till farming systems in semi-arid grain growing regions. The disease causes significant yield losses of $79 million annually in Australia, particularly under post-anthesis drought stress conditions. A number of control measures have been demonstrated none of them have proven to be effective at controlling this disease. Therefore the development of wheat germplasm resistant and/or tolerant to crown rot is essential for sustainable management of this disease. Attempting to combine genes and QTL for crown rot resistance and tolerance using traditional breeding strategies have generally proven inefficient, and therefore novel breeding strategies are required to more efficiently transfer crown rot resistance into adapted backgrounds. In this project, MARS will be used to select for crown rot resistance and tolerance. The proposed study will result in improved crown rot resistant genotypes by accumulating the many minor genes and QTLs carrying favourable alleles for this disease in a fixed background. This will be achieved by identifying individual gene effects and combining genes of significant effect through recombination amongst sister lines. The study will also provide new information on the relationship between resistance and tolerance in crown rot. Further, this study will document the use of MARS as a breeding strategy for traits with complex inheritances in a self-pollinated crop such as wheat. This study will validate the strategy by comparing parents, the base population and recombined materials.

Selected publications

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Journals

  • Rahman, M., Mandal, M., Alam, M., Rahman, S., Begum, N., Khalil, I. (2017). Identification of drought tolerant spring wheat genotypes based on some of the physiological traits. SABRAO Journal of Breeding and Genetics, 49(1), 104-115.

2017

  • Rahman, M., Mandal, M., Alam, M., Rahman, S., Begum, N., Khalil, I. (2017). Identification of drought tolerant spring wheat genotypes based on some of the physiological traits. SABRAO Journal of Breeding and Genetics, 49(1), 104-115.

Note: This profile is for a student at the University of Sydney. Views presented here are not necessarily those of the University.