Coleoptile counts in barley breeding

27 Nov, 2008 04:10 PM
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The GRDC is supporting research by Blakely Paynter, DAFWA, on the impact different barley coleoptile lengths have on crop emergence and production.
The GRDC is supporting research by Blakely Paynter, DAFWA, on the impact different barley coleoptile lengths have on crop emergence and production.

GRDC supported studies in WA are reviewing the impact different barley coleoptile lengths have on emergence and production when seed is sown at different depths.

According to Blakely Paynter of DAFWA, barley breeders should consider what wheat breeders have already achieved in developing wheat cultivars with improved coleoptile length and ability to emerge from deep sowing.

"Traditionally the coleoptile length of barley cultivars grown in Australia is around seven centimetres, but the coleoptile length of the new barley cultivars Buloke, Dash, Hindmarsh and Flagship is shorter than this," Mr Paynter said.

Mr Paynter is assessing the interaction between the seed dressing triadimenol and the pre-emergent herbicide trifluralin because both can reduce coleoptile length by as much as two centimetres.

Barley cultivars with three coleoptile lengths are being compared: shorter than average (Dash and Hindmarsh), average (Hamelin and Vlamingh) and longer than average (Doolup and Fleet).

GRDC

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