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seed dormancy

Catalogue: GRDC Final Reports
Several field studies were undertaken in SA and WA to identify promising herbicides for the control of barley grass in wheat... After barley grass was confirmed to be increasing on SA and WA farms, laboratory studies were undertaken to determine the reasons for this trend... The project was designed to identify weeds that were emerging as a threat to productivity of grain crops in SA and WA and to undertake studies to determine underlying reasons for their increasing incidence...
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Catalogue: Ground Cover
Breakthrough finds wheat's vital sleeper gene.. Two bread wheat genes that provide resistance to pre-harvest sprouting - one of the main impediments to consistent grain quality - have been identified by CSIRO's Agriculture Flagship in a GRDC project... The resistance was thought to be due to the existence of genes collectively called 'dormancy genes' because of their ability to suppress germination (keep seed asleep, so to speak) under conditions that would otherwise lead to pre-harvest sprouting...
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Catalogue: Ground Cover
Breakthrough finds wheat's vital sleeper gene.. Two bread wheat genes that provide resistance to pre-harvest sprouting - one of the main impediments to consistent grain quality - have been identified by CSIRO's Agriculture Flagship in a GRDC project... The resistance was thought to be due to the existence of genes collectively called 'dormancy genes' because of their ability to suppress germination (keep seed asleep, so to speak) under conditions that would otherwise lead to pre-harvest sprouting...
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Catalogue: GRDC Final Reports
Most of the weed seedbank remains on the soil surface where exposure to light could have an important in uence on the germination behaviour of B. diandrus and B. rigidus... Across the experiment, germinability of B. rigidus from the in-crop habitat was found to be slow and incomplete, and populations of B. rigidus collected from Minlaton and Warooka on the YP showed no germination at all in light/dark conditions at any of the tested time-points (Fig. 1)... In summary, strong differences in light/dark germinability were observed in the collected populations of B. diandrus and B. rigidus right through until the end of the growing season (end of September), with B. rigidus germination never exceeding 40%...
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Catalogue: GRDC Updates
In a recent survey by Fleet and Gill (2008), farmers in low rainfall districts in South Australia and Victoria reported increasing incidence of barley grass in their crops... Our research has clearly shown higher levels of seed dormancy in barley grass and brome grass populations collected from cropping fields than those from non-crop situations such as long-term pastures, fence-lines or roadsides... Results of the study conclusively showed the adaptive value of selection for increased seed dormancy in cropping habitats...
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