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black point

Catalogue: GRDC Final Reports
Black point is often associated with the occurrence of rain and high humidity during grain filling and ripening... We have determined a role for peroxidases and a quantitative trait locus (QTL) on chromosome 2H in black point development and have established that the impact of black point on malting is negligible... We examined several enzymes and their activity in black-pointed and healthy grains after establishing that fungi (particularly Alternaria alternata ) can be isolated from healthy and black-pointed grains and is unlikely to be the causal agent of black point...
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Catalogue: GRDC Final Reports
Black point discolouration appears to be similar to enzymatic browning characteristic of plant tissues subjected to physical damage, which involves the oxidation of phenolic compounds present in plant tissues by polyphenol oxidase (PPO) or peroxidase (POX) and the transformation of the oxidation products to dark pigments... In order to determine differences in enzymatic activity of clean and black-pointed grains, and the suitability of black-pointed barley grain for use in malting and brewing, POX and PPO were measured during grain development using enzymatic activity assays and isoelectric focusing... Black point appears to be similar to the enzymatic browning characteristic of plant tissues subjected to physical damage, which involves the oxidation of phenolic compounds by polyphenol oxidase (PPO) and peroxidase (POX) and the transformation of the oxidation products to melanin-like black or brown pigments (Dicko et al., 2002)...
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Catalogue: Broadacre Field Crops DAFF QLD
A photograph of durum wheat heats showing long awns.. Wollaroi has good resistance to black point, but is only moderately tolerant to root lesion nematodes and is not recommended for nematode infested soils... EGA Bellaroi has superior semolina and pasta quality with bright, clean, yellow appearance and no discoloration...
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Catalogue: Broadacre Field Crops DAFF QLD
A photograph of durum wheat heats showing long awns.. Wollaroi has good resistance to black point, but is only moderately tolerant to root lesion nematodes and is not recommended for nematode infested soils... EGA Bellaroi has superior semolina and pasta quality with bright, clean, yellow appearance and no discoloration...
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Catalogue: Broadacre Field Crops DAFF QLD
A photograph of durum wheat heats showing long awns.. Wollaroi has good resistance to black point, but is only moderately tolerant to root lesion nematodes and is not recommended for nematode infested soils... EGA Bellaroi has superior semolina and pasta quality with bright, clean, yellow appearance and no discoloration...
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Catalogue: Ground Cover
The genetics of brewing better beer.. Genetic analysis shows that malting barley grown under Australian conditions requires a finer balance between malting quality and pre-harvest sprouting tolerance than its Canadian counterparts.. The market has a strong preference for the malting flavour of Canadian barley and is often willing to pay a $50-per-tonne premium for it...
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Catalogue: Broadacre Field Crops DAFF QLD
Photograph or mosaic-like symptoms characteristic of wheat streak mosaic virus infection of wheat.. To minimise the effect of diseases: use partially resistant varieties use disease-free seed use fungicidal seed treatments to kill fungi carried on the seed coat or in the seed keep farm free from weeds which may carry over some diseases rotate crops... During the period between summer harvest and planting of the next wheat crop, WSMV persists in the 'green bridge' of volunteer wheat plants and other grasses...
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Catalogue: Broadacre Field Crops DAFF QLD
Photograph or mosaic-like symptoms characteristic of wheat streak mosaic virus infection of wheat.. To minimise the effect of diseases: use partially resistant varieties use disease-free seed use fungicidal seed treatments to kill fungi carried on the seed coat or in the seed keep farm free from weeds which may carry over some diseases rotate crops... During the period between summer harvest and planting of the next wheat crop, WSMV persists in the 'green bridge' of volunteer wheat plants and other grasses...
Related categories:
Catalogue: Broadacre Field Crops DAFF QLD
Photograph or mosaic-like symptoms characteristic of wheat streak mosaic virus infection of wheat.. To minimise the effect of diseases: use partially resistant varieties use disease-free seed use fungicidal seed treatments to kill fungi carried on the seed coat or in the seed keep farm free from weeds which may carry over some diseases rotate crops... During the period between summer harvest and planting of the next wheat crop, WSMV persists in the 'green bridge' of volunteer wheat plants and other grasses...
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