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Catalogue: GRDC Research Summaries
The work will characterise PUE of a diverse range of wheat and barley varieties in the field to identify germplasm with consistently high PUE... The aim of the project is to assess the level of genetic variation in response to phosphorus fertiliser in wheat and barley and to provide plant breeders with the information and genetic tools to improve phosphorus use efficiency of cereals... There are three outputs from this project: (i) it will characterise the response to phosphorus among a large number of varieties of wheat and barley; (ii) it will provide detailed analysis of the reasons why varieties show different response to phosphorus fertiliser and how this relates to their phosphorus use effciency and (iii) through genetic studies it will aim to provide plant breeders with tools to make the selection for phosphorus use effciency easier...
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Catalogue: GRDC Research Summaries
The work will characterise PUE of a diverse range of wheat and barley varieties in the field to identify germplasm with consistently high PUE... The naturally-low levels of soil phosphorus over large areas of Australia?s cropping zone necessitate regular applications of phosphorus fertiliser to sustain productivity... The aim of the project is to assess the level of genetic variation in response to phosphorus fertiliser in wheat and barley and to provide plant breeders with the information and genetic tools to improve phosphorus use efficiency of cereals...
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Catalogue: Ground Cover
While a lack of water for irrigated crops tends to be a 'negative', one Wee Waa cotton and grain grower is finding there can also be benefits.. I've looked upon this period as a chance to better our systems by rebuilding our water-management facilities, trying new crops and varieties and fine-tuning the rotation to produce three profitable crops in any two-year period," James says... The rotation James feels works best is irrigated cotton, followed by winter wheat - grown dryland but potentially irrigated if allocations allow for one or two waterings - with mungbeans grown as a summer crop, with one watering followed by a winter fallow period, and cotton sown in the following spring...
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Catalogue: Ground Cover
A common (genetic) denominator has been discovered for wheat's acute sensitivity to stress - from drought, heat or frost - at flowering... The finding stems from the discovery of a common biological response to different kinds of environmental stresses... Dr Dolferus arrived at this concept by integrating many, disparate field observations in which plants subjected to different stresses all ultimately responded the same way - by aborting the development of pollen...
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Catalogue: Ground Cover
New pathotype virulent to the Yr17 resistance gene identified in two crops.. A new pathotype of stripe rust showing potential resistance to the Yr17 resistance gene has put a question mark over all varieties depending on that gene - including some, such as Ventura, which showed promise as a replacement for the popular, but highly susceptible, H45 variety... [Photo (left) by Brad Collis: Dr Harbans Bariana is working on the development of early plant resistance in the ongoing fight against stripe rust.] "Previous experience suggests that when a pathotype overcomes a resistant gene present in a large number of varieties, it has an advantage and can spread quite rapidly, so it could become more dominant," Dr Wellings says...
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Catalogue: Ground Cover
NVT adopts grower approach to disease management.. Mr Bedggood says if the NVT are not treated for disease it misrepresents the potential of some varieties, especially if a commercial variety has become susceptible since its release and is currently widely grown... "To ensure uniformity of treatments, the NVT program likes to sow all seed bare [untreated], as supplied by the plant breeder, so we use a fertiliser at sowing which has been amended with fungicide," Mr Bedggood says...
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Catalogue: GRDC Updates
Take home message Lodging creates a major challenge for plant breeders because of the trade off between lodging resistance and grain yield potential... The stay-green trait can have a significant effect in reducing the occurrence of lodging... The importance of pathogens on lodging and any build-up that may occur under continuous sorghum cultivation is unclear and needs more research...
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Catalogue: Ground Cover
Following their discovery of two genes that control the size of plant seeds, CSIRO researchers are investigating how that knowledge can be used to produce larger seeds across a wide range of crops... In initial tests, where the genes have been "turned down", seed size has been reduced by up to 30 per cent... The challenge now for the CSIRO team led by Dr Abed Chaudhury and Dr Ming Luo is to "turn up" the activity of the genes to try to increase seed size...
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Catalogue: Ground Cover
Demonstration trial evaluates crop water use.. Trial coordinator Julie Ferguson, from Queensland Primary Industries (QPI), says two new varieties being developed by CSIRO are also part of the trial, providing growers with a preview of advanced breeding lines... The QPI water-use efficiency team has been monitoring the site with an 'Enviroscan' probe and will develop crop coefficients from water use information throughout the growing season...
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Catalogue: GRDC YouTube channel
This previously isolated plant material will provide a genetic diversity never before included in plant breeding programs... 0.269: GCTV Ep#11 Special Feature: Bob Redden - Curator of the Aust Grains Genebank 0.799: Darryl Anderson: Reporter The Australian Grains Genebank at Horsham 2.84: in Victoria has germ plasm collected from farmers, roadsides and breeding programs all 8.48: over the world... 381.249: Dr Bob Redden: Correct it really will because the new genebank 385.909: is going to have a new database which will be online, which will have all our inventories 392.809: listed for peas, lentils, chickpeas, wheat, maize, all of it will be available online 399.889: with a shopping cart where you can tick off which ones you want...
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