How and why to measure the germination process
TL;DR: A review about measurements of the germination process, with an analysis of the several mathematical expressions included in the specific literature, recovering the history, sense, and limitations of some germination measurements.
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Abstract: In the last two centuries, papers have been published including measurements of the germination process. High diversity of mathematical expressions has made comparisons between papers and some times the interpretation of results difficult. Thus, in this paper is included a review about measurements of the germination process, with an analysis of the several mathematical expressions included in the specific literature, recovering the history, sense, and limitations of some germination measurements. Among the measurements included in this paper are the germinability, germination time, coefficient of uniformity of germination (CUG), coefficient of variation of the germination time (CVt), germination rate (mean rate, weighted mean rate, coefficient of velocity, germination rate of George, Timsons index, GV or Czabators index; Throneberry and Smiths method and its adaptations, including Maguires rate; ERI or emergence rate index, germination index, and its modifications), uncertainty associated to the distribution of the relative frequency of germination (U), and synchronization index (Z). The limits of the germination measurements were included to make the interpretation and decisions during comparisons easier. Time, rate, homogeneity, and synchrony are aspects that can be measured, informing the dynamics of the germination process. These characteristics are important not only for physiologists and seed technologists, but also for ecologists because it is possible to predict the degree of successful of a species based on the capacity of their harvest seed to spread the germination through time, permitting the recruitment in the environment of some part of the seedlings formed.
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Citations
•Journal Article
Quality assessment of bush bean (Phaseolus vulgaris L.) seeds using the controlled deterioration technique.
TL;DR: The controlled deterioration technique was very effectual in judging the physiological statuses of the varieties studied, and the seeds of several bush bean varieties should be exploited to fix-up the agreeable limits of the traits.
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Population structure and phenology of Discocactus zehntneri Britton & Rose subsp. petr-halfarii (Zachar) M.R. Santos & M.C. Machado (Cactaceae), a critically endangered Brazilian cactus subspecies
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Stage-specific changes in hydrogen peroxide, membrane damage and antioxidant defense of a xerohalophyte fodder grass Panicum antidotale under increasing salinity
TL;DR: In this paper , the effects of increasing salinity on levels of hydrogen peroxide (H2O2), membrane damage and antioxidant defense during seed germination and early seedling stage of a C4 xerohalophyte fodder grass Panicum antidotale was examined.
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Understanding the seedling development in sedge species (Cyperaceae, Poales) from micromorphological and anatomical perspectives
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References
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Ecological Diversity and its Measurement
Anne E. Magurran
- 30 Sep 1988
TL;DR: In this paper, the authors define definitions of diversity and apply them to the problem of measuring species diversity, choosing an index and interpreting diversity measures, and applying them to structural and structural diversity.
•Book
Seeds: Ecology, Biogeography, and, Evolution of Dormancy and Germination
Carol C. Baskin,Jerry M. Baskin +1 more
- 10 Jun 1998
TL;DR: A Geographical Perspective on Germination Ecology: Tropical and Sub-tropical Zones as discussed by the authors, Temperate and Arctic Zones, and Semi-Arctic Zones: Temperate, Subtropical, and Arctic zones.
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