2009University of Southern Queensland ePrints (University of Southern Queensland)Requires access

Regional frost: calibration of frost chamber to encompass all Australian conditions

Grant Daggard, Joan E. Vickers

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Abstract

Frost damage is a significant but unpredictable threat to spring wheat grown in Australia. Reducing frost risk by delaying planting reduces yield by up to 10% annually. Conventional approaches to breeding for increased resistance have yet to be successful. This project aims at using a genetic engineering approach to providing frost resistance via the introduction of novel genes to inhibit ice formation and/or ameliorate its effects on the wheat plant during flowering. Initial in vitro tests of transformed plants indicate a potential for improved frost tolerance which will be further evaluated by whole plant testing.

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Frost damage is a significant but unpredictable threat to spring wheat grown in Australia. Reducing frost risk by delaying planting reduces yield by up to 10% annually. Conventional approaches to breeding for increased resistance have yet to be successful. This project aims at using a genetic engineering approach to providing frost resistance via the introduction of novel genes to inhibit ice formation and/or ameliorate its effects on the wheat plant during flowering. Initial in vitro tests of transformed plants indicate a potential for improved frost tolerance which will be further evaluated by whole plant testing.

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Available abstract

Frost damage is a significant but unpredictable threat to spring wheat grown in Australia. Reducing frost risk by delaying planting reduces yield by up to 10% annually. Conventional approaches to breeding for increased resistance have yet to be successful. This project aims at using a genetic engineering approach to providing frost resistance via the introduction of novel genes to inhibit ice formation and/or ameliorate its effects on the wheat plant during flowering. Initial in vitro tests of transformed plants indicate a potential for improved frost tolerance which will be further evaluated by whole plant testing.

Key concepts: Frost (temperature), Sowing, Environmental science, Resistance (ecology), Winter wheat, Agronomy, Ice formation, Biology

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