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Soil type does not affect seed ageing when soil water potential and temperature are controlled

Long, R.L. and Steadman, K.J. and Panetta, F.D. and Adkins, S.W. (2009) Soil type does not affect seed ageing when soil water potential and temperature are controlled. Plant and Soil, 320 (1-2). pp. 131-140.

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Article Link(s): http://dx.doi.org/10.1007/s11104-008-9878-8

Publisher URL: http://www.springerlink.com/home/main.mpx

Abstract

To investigate the effects of soil type on seed persistence in a manner that controlled for location and climate variables, three weed species—Gomphocarpus physocarpus (swan plant), Avena sterilis ssp. ludoviciana (wild oat) and Ligustrum lucidum (broadleaf privet)—were buried for 21 months in three contrasting soils at a single location. Soil type had a significant effect on seed persistence and seedling vigour, but soil water content and temperature varied between soils due to differences in physical and chemical properties. Warmer, wetter conditions favoured shorter persistence. A laboratory-based test was developed to accelerate the rate of seed ageing within soils, using controlled superoptimal temperature and moisture conditions (the soil-specific accelerated ageing test, SSAAT). The SSAAT demonstrated that soil type per se did not influence seed longevity. Moreover, the order in which seeds aged was the same whether aged in the field or SSAAT, with L. lucidum being shortest-lived and A. sterilis being longest-lived of the three species.

Item Type:Article
Corporate Creators:QPIF
Additional Information:© Springer Netherlands.
Keywords:Seed longevity; seed persistence; soil; seedling vigour; accelerated ageing; weeds; seed bank; Avena sterilis; Gomphocarpus physocarpus; Ligustrum lucidum.
Subjects:Plant culture > Seeds. Seed technology
Science > Invasive Species > Plants > Weed ecology
Agriculture > Agriculture (General) > Soils. Soil science > Soil and crops. Soil-plant relationships. Soil productivity
Plant pests and diseases > Weeds, parasitic plants etc
Deposited On:24 Aug 2009 07:07
Last Modified:11 Mar 2011 05:38

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