Quantification of the seed germination of fennel ecotypes to osmotic stress using different statistical distributions

Document Type : Original Article

Authors

1 Department of Plant Production and Genetics, Agricultural Sciences and Natural Resources University of Khuzestan

2 Department of Agronomy and Plant breeding, Mohaghegh Ardabili University

3 Department of Plant production of Genetics, Khuzestan University of Agricultural Sciences and Natural Resources.

Abstract

In order to quantify the seed germination responses of Fennel ecotypes including Esfahan, Hamadan and Booshehr to osmotic stress with concentrations of (0, -0.1, -0.2, -0.3, -0.4 and -0.5 MPa) a factorial experiment was conducted based on the completely randomized design with four replications. Experimental data were subjected to analysis with various statistical distributions to provide more reliable and robust explorations. RSME value of hydrotime model showed that data were well fitted for seed germination of Booshehr. The normal and Gumbel distributions were the best and the worst model to estimate hydrotime model parameters. It was also cleared that among statistical distributions fitted on hydrotime model, the highest base water potential was obtained from Normal distribution -0.41 MPa. For Esfahan ecotype, hydrotime constant was estimated about 89 MPa/hour using Gumbel distribution. There was significant variation in location parameters of various statistical distributions and it has a range of -19.44 (Weibull) to -0.57 (Normal Distributions).

Keywords

References

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Iranian Journal of Seed Science and Technology
Volume 9, Issue 3 - Serial Number 19
December 2020
Pages 99-112

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