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root trait

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Catalogue: Ground Cover
Stay-green wheat may weaken drought's grip.. Stay-green was discovered in wheat more than 25 years ago, but the traits are only now becoming accessible to breeders through the development of molecular markers, the details of which will be published this year... Stay-green in plants can be determined by a range of underlying mechanisms, several of which facilitate increased water availability after flowering, such as small canopy size at flowering, increased moisture uptake after flowering, increased nitrogen uptake during grain-fill and increased nitrogen in leaves...
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Catalogue: GRDC Final Reports
The stay-green phenotype has been successfully used to select for yield and yield stability of sorghum in the Australian northern cereal belt (Borrell et al. 2006) and shows promise for selection in wheat... Deep soil moisture was important for expression of the high-yielding, stay-green phenotype (Christopher et al. 2008)... Small increases in soil moisture extraction post anthesis lead to significant yield gain...
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Catalogue: GRDC Research Summaries
" Increasing the capacity of wheat to extract phosphorus from soils... High-grade P fertilizer is manufactured from rock phosphate which is a limited resource mined from of a few major deposits in north Africa, China and the USA. Rock phosphate it is a highly traded commodity on the world market and demands for fertilizer are expected to increase significantly over the next 50 years... Large price fluctuations during 2007/2008 saw the cost of phosphorus fertilizers in Australia rise by 400% which was detrimental to farmer profits...
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Catalogue: Ground Cover
Stay-green wheat may weaken drought's grip.. Stay-green was discovered in wheat more than 25 years ago, but the traits are only now becoming accessible to breeders through the development of molecular markers, the details of which will be published this year... Stay-green in plants can be determined by a range of underlying mechanisms, several of which facilitate increased water availability after flowering, such as small canopy size at flowering, increased moisture uptake after flowering, increased nitrogen uptake during grain-fill and increased nitrogen in leaves...
Related categories:
Catalogue: GRDC Research Summaries
" Increasing the capacity of wheat to extract phosphorus from soils... High-grade P fertilizer is manufactured from rock phosphate which is a limited resource mined from of a few major deposits in north Africa, China and the USA. Rock phosphate it is a highly traded commodity on the world market and demands for fertilizer are expected to increase significantly over the next 50 years... Large price fluctuations during 2007/2008 saw the cost of phosphorus fertilizers in Australia rise by 400% which was detrimental to farmer profits...
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Catalogue: GRDC 2014 Research Summaries
The favourable root architectural traits were identified in the stay-green genotype SeriM82.Wheat genotypes with narrower lateral root distribution and higher root length density at depth can gain improved access to deep soil moisture late in the season when marginal water use efficiency for grain production is high (Manschadi et al 2006; Kirkegaard et al 2007)... Evaluation of the root traits in a wide range of Australian cropping areas using computer simulation modeling for over 100 years of historical meteorological data indicates that they are widely useful in all Australian cropping regions not only in the northern region and, importantly, they do not limit yield in wetter seasons (UQ00057)... We have identified molecular markers and quantitative trait loci (QTL) indicating genetic regions controlling seedling seminal root angle and number in wheat (Christopher et al 2012)...
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Catalogue: GRDC Final Reports
In line with previous research findings using rice, the wheat experiments showed overall consistency among genotypes in root penetration between a wax layer in soil columns and a hardpan in the field... 2. Wheat varieties differ in root penetration of a wax layer and of field soils Seminal and nodal root penetration ability through thin wax layers was evaluated in 24 Australian wheat varieties and breeding lines in soil columns... 5. Substantial variation among DH lines in root depth below the wax layer and in the field Study of the genotypic variation in hardpan penetration ability within the same genetic background was undertaken using a DH population (N = 143) of the cross between Halberd (good) and Cranbrook (poor)...
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Catalogue: GRDC Updates
Stay-green in wheat has potential to improve yield independently of root traits... Stay-green was measured on a segregating population in 3 environments in 2010, 2011 and 2012.. Dr. Jack (John) Christopher Research Fellow Queensland Alliance for Agricultural and Food Innovation (QAAFI) University of Queensland Ph: 07 4639 8813 Mb: 0434 609 152 Fx: 07 4639 8800 Email: j.christopher@uq.edu.au Website: www.qaafi.uq.edu.au < Keep browsing 0 Responses to Stay green in wheat has potential to improve yield independently of root traits..
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Catalogue: GRDC Final Reports
Discussion Group for 'Root systems to increase water and nutrient capture for greater yields'.. Generate mutant populations or develop genetic variants that show novel root traits that may have value for water and nutrients Use germplasm that has historically performed very well in the target region in Australia... Modelling of field data may reveal value of known traits in given regions (E.g. Lilley and Kirkegaard for deep roots in NSW; Hammer and Christopher in the north), in different soil types, and if there are ones beneficial to more than one soil (e.g. fine roots)...
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Catalogue: GRDC Research Summaries
The aim of the project is to apply the new genetic model for wheat, Brachypodium distachyon, to speed up gene discovery in wheat root systems... The objectives are to (1) assemble a collection of diverse Brachypodium germplasm for this project and other Australian researchers; (2) screen Brachypodium genotypes for variation in root vigour, architecture, water uptake and tolerance to wheat root pathogens, and (3) identify genomic regions and markers associated with root traits in wheat using Brachypodium... http://www.nature.com/news/2010/100728/full/466552a.html - international; 53,000 circulation; ~400,000 readership - Impact factor 32 Peer reviewed journals Brkljacic et al (19 international authors including Watt) (2011) Brachypodium as a model for the grasses: Today and the future...
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