A5062642616- Wheat and Barley Genetics and Pathology
- Crop Yield and Soil Fertility
- Genetics and Plant Breeding
- Plant nutrient uptake and metabolism
- Rice Cultivation and Yield Improvement
- Genetic Mapping and Diversity in Plants and Animals
- Plant Taxonomy and Phylogenetics
- Remote Sensing in Agriculture
- Irrigation Practices and Water Management
- Chromosomal and Genetic Variations
- Plant Water Relations and Carbon Dynamics
- Plant Disease Resistance and Genetics
- Turfgrass Adaptation and Management
- Bioenergy crop production and management
- Weed Control and Herbicide Applications
- GABA and Rice Research
- Photosynthetic Processes and Mechanisms
- Botanical Research and Chemistry
- Genomics and Phylogenetic Studies
- Natural Products and Biological Research
- Seed Germination and Physiology
- Climate change impacts on agriculture
- Sugarcane Cultivation and Processing
- Microbial Metabolism and Applications
- Plant responses to elevated CO2
Agriculture and Food
2015-2024
ARC Centre of Excellence for Plant Success in Nature and Agriculture
2012-2024
The University of Queensland
2015-2024
Queensland Government
2016-2024
Department of Agriculture, Fisheries and Forestry
2013-2015
Breast Cancer Now
2012
Institute of Cancer Research
2012
Lawrence Berkeley National Laboratory
2012
Kabarak University
2012
Moi University
2012
Better understanding of root system structure and function is critical to crop improvement in water-limited environments. The aims this study were examine characteristics two wheat genotypes contrasting tolerance water limitation assess the functional implications on adaptation environments any differences found. drought tolerant barley variety, Mackay, was also included allow inter-species comparison. Single plants grown large, soil-filled root-observation chambers. Root growth monitored by...
Water availability is a major limiting factor for wheat (Triticum aestivum L.) production in rain-fed agricultural systems worldwide. Root system architecture has important functional implications the timing and extent of soil water extraction, yet selection root architectural traits breeding programs been limited by lack suitable phenotyping methods. The aim this research was to develop low-cost high-throughput methods facilitate desirable traits. Here, we report two methods, one using...
A stay-green phenotype enables crops to retain green leaves longer after anthesis compared with senescent types, potentially improving yield. Measuring the normalized difference vegetative index (NDVI) during whole senescence period allows quantification of component traits contributing a phenotype. These objective and standardized can be across genotypes environments. Traits examined include maximum NDVI near (Nmax), rate (SR), trait integrating (SGint), plus time from onset (OnS),...
Lolium rigidum Gaud. biotype SLR31 is resistant to the herbicide diclofop-methyl and cross-resistant several sulfonylurea herbicides. Wheat ryegrass exhibit similar patterns of resistance herbicides, suggesting that mechanism may be similar. Cross-resistant also wheat-selective imidazolinone imazamethabenz. The metabolized [phenyl-U-14C]chlorsulfuron at a faster rate than which susceptible both chlorsulfuron. A third but not chlorsulfuron same as biotype. increased metabolism observed in is,...
Water availability is a key limiting factor in wheat production the northern grain belt of Australia. Varieties with improved adaptation to such conditions are actively sought. The CIMMYT line SeriM82 has shown significant yield advantage multi-environment screening trials this region. objective study was identify physiological basis adaptive traits underpinning advantage. Six detailed experiments were conducted compare growth, development, and that adapted cultivar, Hartog. undertaken field...
Radiant spring frosts occurring during reproductive developmental stages can result in catastrophic yield loss for wheat producers. To better understand the spatial and temporal variability of frost, occurrence impact frost events on rain-fed production was estimated across Australian wheatbelt 1957–2013 using a 0.05 ° gridded weather data set. Simulated outcomes at 60 key locations were compared with those virtual genotypes different levels tolerance. Over last six decades, more events,...
We aim to incorporate deep root traits into future wheat varieties increase access stored soil water during grain development, which is twice as valuable for yield captured at younger stages. Most phenotyping efforts have been indirect studies in the laboratory, young plant stages, or using shoot measures. Here, coring 2 m depth was used across three field environments directly phenotype on development (depth, descent rate, density, length, and distribution). Shoot phenotypes included canopy...
Plant breeding requires numerous generations to be cycled and evaluated before an improved cultivar is released. This lengthy process required introduce test multiple traits of interest. However, a technology for rapid generation advance named 'speed breeding' was successfully deployed in bread wheat (Triticum aestivum L.) achieve six per year while imposing phenotypic selection foliar disease resistance grain dormancy. Here, the first time deployment this methodology presented durum Desf.)...
The optimal root system architecture (RSA) of a crop is context dependent and critical for efficient resource capture in the soil. Narrow growth angle promoting deeper often associated with improved access to water nutrients deep soils during terminal drought. RSA, therefore drought-adaptive trait that could minimise yield losses regions limited rainfall. Here, GWAS seminal (SRA) identified seven marker-trait associations clustered on chromosome 6A, representing major quantitative locus...
Stay-green plants retain green leaves longer after anthesis and can have improved yield, particularly under water limitation. As senescence is a dynamic process, genotypes with different patterns may exhibit similar final normalised difference vegetative index (NDVI). By monitoring NDVI from as early awn emergence to maturity, we demonstrate that analysing dynamics improves insight into genotypic stay-green variation. A evaluation tool was developed fit logistic function data used analyse...
WLR1, a biotype of Lolium rigidum Gaud. that had been treated with the sulfonylurea herbicide chlorsulfuron in 7 consecutive years, was found to be resistant both wheat-selective and nonselective imidazolinone herbicides. Biotype SLR31, which became cross-resistant following treatment aryloxyphenoxypropionate diclofop-methyl, wheat-selective, but not nonselective, The concentrations required reduce vitro acetolactate synthase (ALs) activity 50% respect control assays minus for WLR1 greater...
In wheat, tillering and water-soluble carbohydrates (WSCs) in the stem are potential traits for adaptation to different environments of interest as targets selective breeding. This study investigated observation that a high WSC concentration (WSCc) is often related low tillering. The proposition tested was accumulation plant density dependent could be an emergent property tillering, whether driven by genotype or environment. A small subset recombinant inbred lines (RILs) contrasting grown at...
Genomic selection (GS) can be effective in breeding for quantitative traits, such as yield, by reducing the cycle duration. Speed (SB) uses extended photoperiod and temperature control to enable rapid generation advancement. Together, GS SB synergistically reduce quickly producing recombinant inbred lines (RILs) enabling indirect phenotypic improve key height flowering time, prior field trials. In addition, traits measured under (SB traits) correlated with field‐based yield could prediction...
Abstract Using a field to lab approach, mature deep-rooting traits in wheat were correlated root phenotypes measured on young plants from controlled conditions. Mature of 20 genotypes at maturity established via coring three trials across 2 years. Field expressed by the after growth four commonly used screens: (i) soil tubes for emergence, elongation, length, and branching ages 34 days sowing (DAS); (ii) paper pouches 7 DAS (iii) agar chambers primary (PR) number angles 8 DAS; (iv) baskets...