Euphytica

, Volume 143, Issue 3, pp 277–283 | Cite as

Drought and high temperature increases preharvest sprouting tolerance in a genotype without grain dormancy

  • T. B. Biddulph
  • D. J. Mares
  • J. A. Plummer
  • T. L. Setter

Abstract

Preharvest sprouting is common in cereals, which lack grain dormancy when maturing grain is exposed to rainfall or high moisture conditions. Environmental conditions such as drought and high temperature during grain filling have a large effect on the expression of sprouting tolerance. A dormant (DM 2001) and non-dormant (Cunderdin) hard white spring wheat were exposed to drought or irrigated conditions and either low or high temperature during grain filling. Dormancy and embryo sensitivity to ABA were analysed throughout grain filling. The conclusions from this investigation were as follows; firstly DM 2001 was more dormant than Cunderdin, with a four-fold lower germination index (GI) at maturity. Secondly during grain ripening drought increased dormancy and overrides any increase in dormancy with low temperature. Finally embryo sensitivity can be induced in a non-dormant genotype to the extent where the non-dormant genotype in a hot dry environment can have the same phenotype as a dormant genotype grown in a cool wet environment. In summary drought during grain filling increases dormancy suggesting breeders need to avoid drought when screening for sprouting tolerance in order to maximise the chances of identifying genetic differences in grain dormancy and avoid any maturity by drought interactions.

Keywords

abscisic acid dormancy environmental effects germination index G X E interaction 

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References

  1. Auld, A.S. & G.M. Paulsen, 2003. Effects of drought and high temperature during maturation on preharvest sprouting tolerance of hard white winter wheat. Cereal Res Commun 31: 169–176.Google Scholar
  2. DePauw, R.W., T.N. McCaig, D.J. Mares, P. Brennan, R.J. Henry, R. King, J.M. McEwan & I. Gordon, 1990. Genetic variation for length of dormancy period, sprouting resistance and α-amylase content in wheat. In: K. Ringlund, E. Mosleth & D.J. Mares (Eds.), Fifth International Symposium on Preharvest Sprouting in Cereals, pp. 206-212. Westview Press Inc. Boulder, Co, USA.Google Scholar
  3. Himi, E., D.J. Mares, A. Yanagisawa & K. Noda, 2002. Effect of grain colour gene (R) on grain dormancy and sensitivity of the embryo to abscisic acid (ABA) in wheat. J Exp Botany 53: 1569–1574.CrossRefGoogle Scholar
  4. King, R.W., 1989. Physiology of sprouting resistance. In: Preharvest Field Sprouting in Cereals, Chapter 3, pp. 27-60. CRC Press Inc., Boca Raton, Florida.Google Scholar
  5. Lunn, G.D., P.S. Kettlewell, B.J. Major & R.K. Scott, 2002. Variation in dormancy duration in the U.K. wheat cultivar Hornet due to environmental conditions during grain development. Euphytica 126: 89–97.CrossRefGoogle Scholar
  6. Mares, D.J., 1993. Pre-harvest sprouting in wheat. I. Influence of cultivar, rainfall and temperature during grain ripening. Aust J Agric Res 44: 1259–1272.CrossRefGoogle Scholar
  7. Mares, D.J. & K. Mrva, 2001. Mapping quantitative trait loci associated with variation in grain dormancy in Australian wheat. Aust J Agric Res 52: 1257–1265.CrossRefGoogle Scholar
  8. Nielsen, M.T., A.J. McCrate, E.G. Heyne & G.M. Paulsen, 1984. Effect of weather variables during maturation on preharvest sprouting of hard white winter wheat. Crop Sci 24: 779–782.Google Scholar
  9. Reddy, L.V., R.J. Metzger & T.M. Ching, 1985. Effect of temperature on seed dormancy of wheat. Crop Sci 25: 455–458.Google Scholar
  10. Setter, T.L., I. Waters, D.J. Mares & R. Wilson, 2001. Sprouting tolerance of AGWEST wheat breeding lines: Combined and comparative measurements from Crop Improvement Institute, AGWEST (AGWEST) and I.A. Watson Wheat Research Centre, PBI, Narrabri, NSW (PBI). In: Report for Agriculture Western Australia, pp. 1–18, Perth, Western Australia.Google Scholar
  11. Stoy, V., 1983. Progress and prospect in sprouting research. In: J.E. Kruger & D.E. LaBerge (Eds.), Third International Symposium on Pre-Harvest Sprouting in Cereals, pp. 3–7. Svalov, Sweden.Google Scholar
  12. Walker-Simmons, M., 1987. ABA levels and sensitivity in developing wheat embryos of sprouting resistant and susceptible cultivars. Plant Physiol 84: 61–66.Google Scholar
  13. Walker-Simmons, M. & J. Sesing, 1990. Temperature effects on embryonic abscisic acid levels during development of wheat grain dormancy. J Plant Growth Reg 9: 51–56.Google Scholar

Copyright information

© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  • T. B. Biddulph
    • 1
  • D. J. Mares
    • 2
  • J. A. Plummer
    • 1
  • T. L. Setter
    • 3
  1. 1.Plant Biology, FNASUniversity of Western AustraliaCrawleyAustralia
  2. 2.School of Agriculture and WineUniversity of AdelaideGlen OsmondAustralia
  3. 3.Department of Agriculture WACrop ImprovementSouth PerthAustralia

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