A5024552464- Wheat and Barley Genetics and Pathology
- Yeasts and Rust Fungi Studies
- Plant Disease Resistance and Genetics
- Genetics and Plant Breeding
- Bioenergy crop production and management
- Agricultural pest management studies
- Genetic Mapping and Diversity in Plants and Animals
- Genetic and Environmental Crop Studies
- Legume Nitrogen Fixing Symbiosis
- Greenhouse Technology and Climate Control
- Agricultural Practices and Plant Genetics
- Plant Pathogens and Resistance
- Soybean genetics and cultivation
- Potato Plant Research
- Genetic diversity and population structure
The University of Sydney
2017-2025
Universidade Federal do Rio Grande do Sul
2024
The University of Queensland
2014-2022
Agriculture and Food
2014-2022
Institute for Sustainable Plant Protection
2021
Plant Industry
2021
Chickpeas are a globally crucial agricultural product, currently at risk due to human-induced climate change. There has been little research into the impact of heat stress on chickpea compared other crops, but it is known that can cause up 100% yield loss. This study measures Growing Degree Days (GDD) in chickpeas, utilizing an existing calculation. formula expanded for stress, titled Stress (SDD), examine effects high temperature commercially important traits such as and seed size. Using...
We identified Rph24 as a locus in barley (Hordeum vulgare L.) controlling adult plant resistance (APR) to leaf rust, caused by Puccinia hordei. The was previously reported quantitative trait line ND24260-1 and named qRphND. crossed the leaf-rust-susceptible standard Gus determined inheritance patterns progeny. For comparative marker frequency analysis (MFA), resistant susceptible tails of F2 were genotyped with Diversity Arrays Technology genotyping-by-sequencing (DArT-Seq) markers....
High temperature stress affects tomato production both in tropical and sub-tropical environments worldwide. To explore genetic variation for heat tolerance tomato, 329 transcontinental varieties were evaluated at The Ministry of Municipality Environment (MME) greenhouses near Doha, Qatar. Preliminary phenotypic analysis identified a diverse set 71 hybrid pure line more detailed studies. selected subset was examined the greenhouse randomized complete block design under stress. materials...
Chickpeas are a vital source of protein and starch for large portion the world's population known to be impacted by heat stress at every life stage. Previously as an "Orphan Legume", little is genetic control tolerance, most previous research has focused on avoidance rather than tolerance. This study utilised 148 chickpea genotypes, primarily Kabulis, in 12 field trials conducted 2 locations, two sowing periods, across 3 years. Physiology was examined, data paired with Diversity Arrays...
Multi-year evaluation of the Vavilov wheat diversity panel identified new sources adult plant resistance to stripe rust. Genome-wide association studies revealed key genomic regions influencing resistance, including seven novel loci. Wheat rust (YR) caused by Puccinia striiformis f. sp. tritici (Pst) poses a significant threat global food security. Resistance genes commonly found in many varieties have been rendered ineffective due rapid evolution pathogen. To identify (APR), 292 accessions...
A panel of 114 genetically diverse barley lines were assessed in the greenhouse and field for resistance to pathogen Puccinia hordei, causal agent leaf rust. Multi-pathotype tests revealed that 16.6% carried all-stage (ASR) gene Rph3, followed by Rph2 (4.4%), Rph1 (1.7%), Rph12 (1.7%) or Rph19 (1.7%). Five (4.4%) postulated carry combinations Rph2+9.am, Rph2+19 Rph8+19. Three (2.6%) Rph15 based on seedling rust genotyping with a marker linked closely this gene. Based adult-plant tests, 84...
Genetic resistance to net form of blotch in the international barley differential Canadian Lake Shore (CLS) was characterized and mapped. A doubled haploid (DH) population generated from a cross between CLS susceptible cultivar Harrington evaluated at seedling stage using eight diverse Pyrenophora teres f. (Ptt) isolates adult field natural inoculum. To effectively map resistance, comparative marker frequency analysis (MFA) performed 8,762 polymorphic DArT-seq markers, where 'resistant'...
Leaf rust caused by Puccinia hordei is a major disease of barley and best managed deploying effective resistance genes. The effect post-inoculation temperature [18 ± 2°C (low), 22 (mid), or 26 (high)] on the expression selection known all stage (ASR) Rph genes their interaction in combination with adult plant (APR) gene Rph20 were investigated barley. Rph1.a Rph2.b expressed at higher temperatures whereas Rph4.d lost its effectiveness when tested pathotype (pt) 200 P− (avirulent these...
The appearance of blotch/ tiger stripe on chickpea seeds is a genotype-specific seed marking which, although not considered defect during inspection, often rejected based consumer trait preferences. This study aimed to investigate the expression blotch/tiger stripe, thousand grain weight (TGW) and days podding in Australian desi-type chickpea. A single seed-descent mapping population 242 F7 derived progeny lines was selected from controlled cross two homozygous parent genotypes, PBA Slasher...
Abstract Oat crown rust, caused by the fungus Puccinia coronata f. sp. avenae (Pca), is most destructive foliar pathogen of oat. Almost 100 genes conferring resistance to Pca have been catalogued. However, only limited mapped, and chromosomal location remains undetermined. The goals this study were detect locations 13 catalogued Pc one uncharacterized but highly effective gene identify functions related them. We used an A. sativa L. nested association mapping population comprising 14...
Barley stripe or yellow rust (BYR) caused by
High temperature stress affects tomato production both in tropical and sub-tropical environments worldwide. To explore genetic variation for heat tolerance tomato, 329 transcontinental genotypes were evaluated at the Ministry of Municipality Environment (MME) greenhouses near Doha, Qatar, where average daytime was 38 °C with a big fluctuation during growth season. A preliminary phenotypic analysis identified panel 71 hybrid pure-line more detailed studies. The selected subset examined...
Chickpeas are a globally crucial agricultural product, currently at risk due to human-induced climate change. There has been little research into the impact of heat stress on chickpea compared other crops, but it is known that can cause up 100% yield loss. This study utilises an existing calculation, as Growing Degree Days (GDD), and expanded this formula for stress: Stress (SDD), examine effects high temperature commercially important traits such seed size. Using multi-environment trial,...
Abstract Wheat stripe rust (YR) caused by Puccinia striiformis f. sp. tritici ( Pst ), poses a significant threat to global food security. Resistance genes commonly found in many wheat varieties have been rendered ineffective due the rapid evolution of pathogen. To identify novel sources adult plant resistance (APR), 292 accessions from N.I. Vavilov Institute Plant Genetic Resources, Saint Petersburg, Russia, were screened for known APR (i.e. Yr18 , Yr29 Yr46 Yr33 Yr39 and Yr59 ) using...