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rust resistance

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Catalogue: GRDC 2014 Research Summaries
Cereal rust diseases cause significant losses in Australia... Efforts to develop high yielding cereal cultivars with resistance to rust diseases have often been thwarted by the ability of rust pathogens to overcome these genes... The detection of 10 new pathotypes of cereal rust pathogens, resulting in the loss of 5 resistance genes from 2007-2011 highlight the need for ongoing R&D to underpin resistance breeding efforts and ensure industry-wide rust protection...
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Catalogue: Ground Cover
LivingstonA is one of few varieties that has moderate tolerance to root lesion nematodes (RLN), along with other desirable featur.. Livingston is one of few varieties that has moderate tolerance to root lesion nematodes (RLN), along with other desirable features... The researchers concluded that where Pt combines with high levels of crown rot (a common scenario), yield losses can be exacerbated if varieties are susceptible to Pt. Instead of a 10 per cent yield loss from Pt in a susceptible variety it could be 30 to 50 per cent if crown rot is combined with a Pt-intolerant variety...
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Catalogue: Ground Cover
About 200 breeding lines were exchanged between the three countries to improve resistance to the diseases blackleg, white rust and sclerotinia and also tolerance to pod shattering, drought and high temperatures, plus the traits required for canola-quality mustard... During two exchanges, 106 breeding lines of Brassica napus and 104 of B. juncea were exchanged between the three countries... All countries will benefit, with India and China seeking to replace their traditional rapeseed and mustard cultivars with Australian canola-quality (low erucic acid, low glucosinolate) B. napus varieties," Associate Professor Salisbury says...
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Catalogue: GRDC Media
Winning grain growers prepare for world study tour.. Winning grain growers prepare for world study tour The 2011 cropping season will be one to remember for three Australian grain growers... The winning growers, one from each GRDC region, have revolutionised their farming systems by improving farming practices and implementing change to increase productivity, sustainability and viability," Ms Paulsen said. "..
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Catalogue: Ground Cover
Rust's genetic resistance explored via award.. Professor Park says that pathogens reduce yields of the eight most important crops by a staggering 42 per cent and the most effective, economical and environmentally sound way to control rust diseases is to develop and cultivate varieties with genetic resistance. ".. The rust species can destroy entire crops, with Australia's last outbreak, in 1973, costing the wheat industry an estimated $300 million...
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Catalogue: GRDC Updates (North)
Topic Crown rot: Inoculum loads going into 2006; rotation strategies and impacts; Precision row placement to aid crown-rot management... Driftability of amine formulations The 2,4- D products Surpass and Amicide 625 which were used in the trial are considered to be nonvolatile any drift that is associated with these products will be droplet drift not vapour drift... Fungicides as foliar, seed or fertiliser treatments will play a role in the integrated management of this disease until new varieties with improved resistance become available...
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Catalogue: Ground Cover
Kevin Kilby is hoping research will eventually come up with a cheaper, more effective way to control fallow weeds like fleabane... The coming season has the potential - courtesy of well-soaked soils - to deliver above-average yields, but Kevin is quick to point out that recent history has shown nothing can be taken for granted... Kevin soil-tests about 40 per cent of his paddocks to gain a broad picture of his nutrient needs, but hasn't invested in variable-rate technologies, saying weed control has the biggest influence on his crops' performance and that, for the moment, remains the priority...
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Catalogue: GRDC Updates (South)
Topic Crown rot: Inoculum loads going into 2006; rotation strategies and impacts; Precision row placement to aid crown-rot management... Driftability of amine formulations The 2,4- D products Surpass and Amicide 625 which were used in the trial are considered to be nonvolatile any drift that is associated with these products will be droplet drift not vapour drift... Fungicides as foliar, seed or fertiliser treatments will play a role in the integrated management of this disease until new varieties with improved resistance become available...
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Catalogue: Ground Cover
Applications from more than 100 growers, researchers and agribusiness professionals gave the GRDC a hard task in forming its new advisory panels... The new panels comprise a mix of industry stakeholders, including growers, the broader grains agribusiness sector and researchers... She says her strengths are "communication, education and grain marketing" and she hopes to help shape the future of a very exciting industry: "I"d like to see an improvement in the uptake of new technology and see that R&D is spent in a way that allows graingrowers to extract value from further along the chain...
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Catalogue: Ground Cover
Alan Bowring who is researching the role of head and flag leaf development in contributing to wheat yield... New research is suggesting lower leaves contribute more to wheat yield than is currently the "accepted norm" - under which protection of the flag leaf is the principal determinant of grain yield... In similar cool long season conditions in Australia this also seems to be the case in more difficult hot, dry seasons in northern Australia, Alan Bowring's results suggest that the importance of the flag leaf is about half of what is accepted in the UK. His data indicates that in these dry conditions the earlier leaves preceding the flag leaf (especially the preceding two; flag leaf -1 and -2) have a similar overall contribution to yield as the flag leaf, at least in environments such as northern NSW. Contribution to yield of pre-flowering stem reserves was assessed in the research and is believed to contribute between 16 and 21 per_cent by remobilisation of sugars and proteins to the grain...
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