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Catalogue: GRDC 2014 Research Summaries
Production of wheat is limited by many abiotic and biotic stresses... The project will consolidate initial achievements and aims to: i) Identify and develop high yielding, widely adapted germplasm with tolerance/resistance to terminal heat and drought stress ii) Transfer reputed heat and drought tolerance genes into Australian elite wheat backgrounds... iii) Identify potentially new sources of resistance to fungal diseases such as yellow rust and septoria, and incorporate those into adapted Australian genetic backgrounds to broaden the genetic base of resistance to diseases iv) Identify molecular markers closely linked to heat and drought tolerance genes and validate them in Australian wheat backgrounds...
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Catalogue: GRDC Research Summaries
The Services are to increase awareness by growers, advisers, machinery dealers and trainers (primary information providers) in the Northern and Southern grain growing regions of the factors that contribute to spray drift and the tools and techniques available to minimise the potential for spray drift to occur without significantly impacting on product efficacy by: 1) Developing and updating resources and training materials for spray drift management courses and to the GRDC to include the most current information available for spray..... Spray operators can obtain advice on minimising the risk of spray drift by consulting the Grains Research and Development Corporation (GRDC) Fact Sheet Practical tips to reduce spray drift... Resource can help growers plan for summer spraying..
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Catalogue: GRDC Media
Unseasonal hot weather reduced the yield potential of many Western Australian canola crops this year, but research could help deliver varieties with better heat tolerance in the future... "WA canola crops - particularly in the northern and eastern grainbelt - suffered from heat stress this season, and this is likely to happen again in future seasons," UWA Institute of Agriculture and School of Plant Biology researcher Sheng Chen said... Dr Chen said it was too early to determine which canola lines had superior heat tolerance, but independent research led by Wallace Cowling at the UWA Institute of Agriculture had identified some heat tolerant lines of Brassica rapa , an ancestor of canola grown as an oilseed or vegetable crop in some countries...
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Catalogue: GRDC Final Reports
Rationale of the research is growing a diverse range of chickpea genotypes for heat tolerance screening in India (International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad) and Australia (Plant Breeding Institute (PBI), Narrabri, New South Wales) over two growing seasons in the field... The broad outcome of this project was to develop an improved understanding of genetic diversity of chickpea genotypes using molecular markers, the effects of high temperature on chickpea growth and yield and to identify traits that can be potentially exploited for future breeding programs on heat tolerance in chickpeas... Improved knowledge of high temperature effects on plant responses under stressed and non-stressed environments is required for effective germplasm screening...
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Catalogue: GRDC Media
Dry sowing wheat in April can help to optimise farm yields, increase farm area sown and reduce the risks of later season heat shocks across much of WA without significantly affecting frost risk... Less is known about the effects of dry sowing on wheat yields when there are early season soil water deficits... Dr Fletcher found the risk of heat shock fell from 25 to 14 per cent when wheat was sown dry, mainly due to a tighter and earlier flowering window compared to wet sowing of wheat...
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Catalogue: GRDC Media
Research shows benefits of dry sowing wheat early.. Crop modelling work shows that dry sowing wheat in April can maximise whole-farm yields in Western Australia and minimise the likelihood of late-season heat stress, without significantly affecting frost risk... "Using data from 54 seasons at seven sites across the WA grainbelt, the modelling work shows farm-level yield benefits of up to 35 per cent - or up to 0.5 to 1.2 tonnes per hectare - from dry seeding wheat before autumn rains, compared with wet sowing wheat after autumn rains," he said...
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Catalogue: GRDC Media
Dry sowing wheat in April can help to optimise farm yields, increase farm area sown and reduce the risks of later season heat shocks across much of WA without significantly affecting frost risk... Less is known about the effects of dry sowing on wheat yields when there are early season soil water deficits... Dr Fletcher found the risk of heat shock fell from 25 to 14 per cent when wheat was sown dry, mainly due to a tighter and earlier flowering window compared to wet sowing of wheat...
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Catalogue: GRDC Media
Unseasonal hot weather reduced the yield potential of many Western Australian canola crops this year, but research could help deliver varieties with better heat tolerance in the future... "WA canola crops - particularly in the northern and eastern grainbelt - suffered from heat stress this season, and this is likely to happen again in future seasons," UWA Institute of Agriculture and School of Plant Biology researcher Sheng Chen said... Dr Chen said it was too early to determine which canola lines had superior heat tolerance, but independent research led by Wallace Cowling at the UWA Institute of Agriculture had identified some heat tolerant lines of Brassica rapa , an ancestor of canola grown as an oilseed or vegetable crop in some countries...
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Catalogue: Ground Cover
Researchers are calculating the risk and assessing the impact of heat stress at flowering to help growers choose the most appropriate varieties for their location.. On 12 October 2004, the southern grainbelt was hit with an extreme heat event, leaving growers anxious and unsure about how much damage the heat had done to their wheat... But Dr Hayman says there is still a lot that scientists do not know about the impact of heat stress on grain in Australian conditions...
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Catalogue: Ground Cover
Dr Viola Devasirvatham undertaking a chickpea heat-tolerance field experiment at the Plant Breeding Institute at Narrabri... The discovery of heat-tolerant chickpea genotypes may improve the reliability of yields in the northern grainbelt of Australia and other semi-arid environments around the world... Crop phenology (days to first flowering, days to 50 per cent flowering, days to first pod and days to maturity), growth (plant height, plant width and biomass at harvest) and grain yield (including pod number per plant, filled pod number per plant and seed number per plant) were recorded in both seasons...
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