The seasonal dormancy pattern and germination of Matricaria maritima subsp. inodora [L.] Dostal seeds in hydrotime model terms

• Autorzy: Bochenek A , Golaszewski J. , Gorecki R.J.
• Języki publikacji: EN

Abstrakty

EN

Changes in hydrotime model parameters were determined in Matricaria maritima L. subsp. inodora seeds during burial in a field in order to describe the seasonal dormancy pattern. Seeds were exhumed at regular intervals over a year and incubated at different water potentials at 19°C. Germination time courses were analyzed to determine hydrotime population parameters. Values of ѱb(50), ѲH and σѱb varied each month. Mean base water potential values in seeds exhumed each month were related to precipitation over 20 days before their exhumation. Soil temperature could be a trend-controlling factor of this relationship. The seeds were in deep dormancy after remaining 80-90 days in soil below or above limit temperature 15°C. The application of the hydrotime model to describe and predict seasonal dormancy patterns of weed seed is promising, especially for species with a considerable diversification of life strategies and ecophysiological flexibility of diaspores. It could also suggest mechanisms of seasonal dormancy changes of seeds in natural conditions and provide a basis for their examination. One of advantages of the dormancy pattern description of weed seeds remaining in a soil bank by means of threshold models is its simplicity.

Słowa kluczowe

EN

seasonal pattern; dormancy; germination; Matricaria maritima ssp.inodora; seed; soil bank; scentless mayweed; weed

• Wydawca: -
• Czasopismo: Acta Societatis Botanicorum Poloniae
• Rocznik: 2007
• Tom: 76
• Numer: 4
• Opis fizyczny: p.299-307,fig.,ref.

Twórcy

autor

Bochenek A

• University of Warmia and Mazury in Olsztyn, Oczapowskiego 1A, 10-718 Olsztyn, Poland

autor

Golaszewski J.

autor

Gorecki R.J.