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TSitologiia i genetika, 2007
We have found that a progressive loss of telomeric sequences occurs from high molecular weight DNA with an increasing appearance at low molecular weight as the periods of storage in the dry state were extended in time to provide seed germination loss from 98 to 0%.
I, Boubriak +3 more
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We have found that a progressive loss of telomeric sequences occurs from high molecular weight DNA with an increasing appearance at low molecular weight as the periods of storage in the dry state were extended in time to provide seed germination loss from 98 to 0%.
I, Boubriak +3 more
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1989
In part three, on vegetation dynamics, it appeared that many species have become newly established in permanent plots in the study areas. Newly established species in a lot can have been present in the seed bank in the soil before emergence. This is only the case for species with a persistent seed bank sensu Thompson & Grime (1979).
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In part three, on vegetation dynamics, it appeared that many species have become newly established in permanent plots in the study areas. Newly established species in a lot can have been present in the seed bank in the soil before emergence. This is only the case for species with a persistent seed bank sensu Thompson & Grime (1979).
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Journal of Crop Production, 1997
Summary Weeds continue to have major impacts on crop production in spite of efforts to eliminate them. Most weed species rely on seed for regeneration and persistence. The species composition and density of weed seed in the soil vary greatly and are closely linked to the cropping history of the land.
Douglas D. Buhler +2 more
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Summary Weeds continue to have major impacts on crop production in spite of efforts to eliminate them. Most weed species rely on seed for regeneration and persistence. The species composition and density of weed seed in the soil vary greatly and are closely linked to the cropping history of the land.
Douglas D. Buhler +2 more
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1985
After dispersal most seeds undergo a period of dormancy. Depending on the species and the prevailing conditions, dormancy may last from a few days to many decades (or longer). In some species it is normal for a proportion of the seeds to become incorporated into the soil and become part of a store or ‘bank’ of seeds which can be drawn upon ...
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After dispersal most seeds undergo a period of dormancy. Depending on the species and the prevailing conditions, dormancy may last from a few days to many decades (or longer). In some species it is normal for a proportion of the seeds to become incorporated into the soil and become part of a store or ‘bank’ of seeds which can be drawn upon ...
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Seed features, germination and seed bank
2001Most parasitic weeds produce a large number of seeds per single plant. In context with the requirement for the stimulation of germination this high reproduction forms part of their strategy to survive. Before the last decade, little attention was paid to the reproductive capacity of these weeds, and numerous recent papers refer to non-realistic data on
K. H. Linke +5 more
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2000
Ex Situ conservation involves the maintenance of germplasm away from its original location. Samples of a species, subspecies or variety (cultivar) are sampled, transported and conserved either as living collections of plants in field gene banks, botanic gardens or arboreta, or as samples of seed, tubers, tissue expiants, pollen or DNA maintained under ...
J. G. Hawkes +2 more
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Ex Situ conservation involves the maintenance of germplasm away from its original location. Samples of a species, subspecies or variety (cultivar) are sampled, transported and conserved either as living collections of plants in field gene banks, botanic gardens or arboreta, or as samples of seed, tubers, tissue expiants, pollen or DNA maintained under ...
J. G. Hawkes +2 more
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2017
This chapter summarizes current ideas about various aspects of seed bank ecology. Although most plant communities have at least some persistent seeds in the soil, the size of seed banks varies greatly from one habitat to another. Thompson and Silvertown present tables of data on seed density in soils from a wide range of studies.
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This chapter summarizes current ideas about various aspects of seed bank ecology. Although most plant communities have at least some persistent seeds in the soil, the size of seed banks varies greatly from one habitat to another. Thompson and Silvertown present tables of data on seed density in soils from a wide range of studies.
openaire +1 more source