Breeding for improved zinc and magnesium efficiency in wheat and barley

2001

Research organisatons

Trial details

Researcher(s) GK McDonald, RD Graham, J Lloyd, J Lewis, P Lonergan and H Khabas-Saberi
Year(s) 2001
Contributor South Australian Research and Development Institute
Trial location(s) Site 2, Birchip, VIC
Further information View external link
Breeding for improved zinc and magnesium efficiency in wheat and barley locations
Aims

To develop molecular markers for Zn efficiency.

Key messages
  • The +Zn treatment received 7 kg Zn/ha at sowing plus 2 foliar sprays of 0.33 kg Zn/ha.
  • Generally, yield responses to Zn are greater in durum and bread wheat than in barley.
  • The most inefficient lines of wheat and barley showed distinctive symptoms of Zn deficiency, such as reduced growth, pale leaves with chlorotic and necrotic lesions along the mid-vein.
  • In 1999 a dry spring limited the yield response to Zn to about 0.5 t/ha, whereas, in 1998 yield increases up to 1 t/ha were measured.
  • The disparity between the vegetative and the yield responses has tended to be greater in barley than in wheat.
  • The wheat cultivars Goldmark and Kukri have low Zn efficiency, whereas the widely adapted, high yielding cultivars Trident, Krichauff and Worrakatta are Zn-efficient.
  • Within barley, a number of Japanese breeding lines (eg SBWI-1) are very inefficient, but many current cultivars from SA as well as Arapiles (Vic.) and Stirling (WA) show a high level of efficiency.
  • Pot assays for Zn efficiency have been developed and generally show similar rankings to the field tests.
  • Wheat double haploid populations derived from the cross between Trident (efficient) and Songlen (inefficient) have been produced to develop molecular markers for Zn efficiency.
Lead research organisation N/A
Host research organisation Waite Research Institute - The University of Adelaide
Related program More Profit from Crop Nutrition
Acknowledgments N/A
Other trial partners Not specified

Method

Crop types Wheat
Barley
Treatment type(s)
  • Variety: Type
Trial type
Trial design

Birchip 2001 Wheat

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Birchip 2001 Barley

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified



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Trial last modified: 21-10-2019 09:12am AEST