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heat stress tolerance

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Catalogue: Ground Cover
Dr Phil Davies from SARDI checks the performance of field pea plants in a trial at the University of Adelaide's Waite campus in South Australia... "The heat-stress tolerance is due to several genes dispersed across the genome - a situation that makes it difficult to breed all genes into elite cultivars without the genes becoming separated during the genetic recombination that occurs during sexual reproduction," Dr Davies says... Dr Davies has found there is sufficient interest in the trait to pursue molecular markers, which may provide a viable way to rapidly select for these heat-tolerance genes using a cost-effective DNA typing technology favoured by breeders...
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Catalogue: Ground Cover
Dr Phil Davies from SARDI checks the performance of field pea plants in a trial at the University of Adelaide's Waite campus in South Australia... "The heat-stress tolerance is due to several genes dispersed across the genome - a situation that makes it difficult to breed all genes into elite cultivars without the genes becoming separated during the genetic recombination that occurs during sexual reproduction," Dr Davies says... Dr Davies has found there is sufficient interest in the trait to pursue molecular markers, which may provide a viable way to rapidly select for these heat-tolerance genes using a cost-effective DNA typing technology favoured by breeders...
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Catalogue: GRDC Research Summaries
Target traits include bacterial blight resistance of field peas, pod drop tolerance in lentils and heat stress tolerance in field peas and faba beans... Outputs will include bacterial blight race specific and non-specific resistant parent lines and genetic inheritance information in field pea, pod drop resistance screening methodology, tolerant parent lines with genetic inheritance information in lentil and heat stress tolerant screening methodology, tolerant material and genetic inheritance information in field peas and faba beans... The research project aims to produce parental lines with new sources of genetic resistance to bacterial blight race 6 in field pea, pod drop in lentil and heat stress in field pea and faba bean...
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Catalogue: GRDC Updates
The SAGIT funded project involves using a controlled environment assay that is run at Roseworthy, to identify and quantify the level of heat stress tolerance in current varieties, advanced breeders lines and exotic lines, as well as using 'gene mapping', to genetically dissect and understand the key sources of tolerance identified to date... Figure 1 illustrates the fertility and grain size response for a subset of varieties to heat stress in the controlled environment assay. In general heat stress causes a significant (p<0.05) reduction in both grain number and grain size, the two key yield components and ultimately grain yield... A subset of exotic introductions that have been screened for heat stress tolerance in the controlled environment assay, showing diverse levels of adaption...
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Catalogue: GRDC Publications
6 AGP00010: Validation of late sowing to identify heat stress tolerance in wheat and investigation of QTL for heat stress tolerance .................................................................................................................................................................................... In summary, the project will provide valuable genotype information and deliver new genetic resources to Australian wheat breeders... Overall, the approach has a strong applied orientation aimed at crop improvement...
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Catalogue: Ground Cover
Paul Telfer: The most adverse effects of heat stress on yield have been found to occur during flowering rather than grain fill... The wheat plant is most sensitive to heat stress during flowering and grain filling, and 'heat-stress events' often coincide with drought stress and frost events... In the short term, the data collected has highlighted that current best practice in terms of sowing time and appropriately matching it to crop maturity are the best ways to minimise the effects of heat stress on crop production...
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Catalogue: GRDC Media
SARDI Senior Research Officer, Lachlan Lake (left), and Associate Professor Victor Sadras are looking at ways to improve drought and heat stress tolerance in field peas and chickpeas... Four years ago, the team of Associate Professor Victor Sadras from the South Australian Research & Development Institute began looking at ways to improve drought and heat stress tolerance in field peas, which began with mapping the risk of drought in Australia and its different forms... Management should be to have good growing conditions prior to flowering...
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Catalogue: GRDC YouTube channel
Heat is a key abiotic stress... The effects of heat on grain yield are equally as important as drought and frost... Better adapted varieties also generally perform better in heat stress conditions, especially varieties from Southern Australia...
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Catalogue: GRDC Updates (South)
03 5441 6176 03 5444 4299 admin@orm.com.au CAUTION: RESEARCH ON UNREGISTERED PESTICIDE USE Any research with unregistered pesticides or of unregistered products reported in this document does not constitute a recommendation for that particular use by the authors, the authors' organisations or the management committee... If you have a blackleg problem and are growing a susceptible cultivar your first action should be to change to a cultivar with higher levels of resistance... In comparing while many farm decisions are made intuitive versus logical analytical under the influence of a DSS which provide learning reasoning he suggests the either/or approach to on a topic, they are not necessarily used every time the dichotomies is destructive and goes on to say a decision is made...
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Catalogue: GRDC Updates (South)
Gross margins achieved on-farm for wheat in 2011 may have been lower than shown in Table 2... The gross margin calculations depicted in Figure 5 assumed that canola yielded 50 % of wheat at that site in that year... In comparing while many farm decisions are made intuitive versus logical analytical under the influence of a DSS which provide learning reasoning he suggests the either/or approach to on a topic, they are not necessarily used every time the dichotomies is destructive and goes on to say a decision is made...
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