Quantifying of germination response in dill (Anethum graveolens L. ) to temperature and drought stress by hydrothermal time model

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SABERALI SEYED FARHAD; Mardoodi Mohammad Naser

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Journal: Iranian Journal of Field Crop Science Year:2019 | Volume:50 | Issue:1 Page(s): 107-118

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Title

Quantifying of germination response in dill (Anethum graveolens L. ) to temperature and drought stress by hydrothermal time model

Author(s)

SABERALI SEYED FARHAD | Mardoodi Mohammad Naser | Issue Writer Certificate

Keywords

Anethum graveolensQ1

Base water potentialQ1

medicinal plantQ1

modelling and probit analysisQ1

Abstract

Temperature and water are the most important environmental factors controlling seed germination in plants. In order to investigate the effect of temperature and drought stress on seed germination and quantifying of germination; a factorial experiment was conducted with eight temperature levels including 5, 10, 15, 20, 25, 30, 35 and 40 degrees Celsius and the seven levels of drought stress including 0, 0. 5-0. 0,-0. 2,-0. 3,-0. 4,-0. 5 and-0. 6 MPa, respectively. The results showed that the germination was decreased by decreasing osmotic potential at all temperature levels. However, the intensity of this decrease was less in the range of 20 to 30° C. Using two different methods, the base and maximum temperature of dill germination was estimated in the range of 2. 3 and 2. 9 ° C and 43. 0 and 47. 3 ° C, respectively. The optimum temperature for dill germination was 26 ° C. The estimated value of Base water potential for germination was-0. 53 Mpa with the hydrothermal time model. The results also showed that water base potential for dill germination was increased by-0. 5 Mpa as temperature increased. Finally, it was found that if the Base water potential taking into account variable in response to changing temperature, then the hydrothermal time model can be good enough to quntify dill germination response to temperature and water.

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APA: Copy

SABERALI, SEYED FARHAD, & Mardoodi, Mohammad Naser. (2019). Quantifying of germination response in dill (Anethum graveolens L. ) to temperature and drought stress by hydrothermal time model. IRANIAN JOURNAL OF FIELD CROP SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), 50(1 ), 107-118. SID. https://sid.ir/paper/375903/en

Vancouver: Copy

SABERALI SEYED FARHAD, Mardoodi Mohammad Naser. Quantifying of germination response in dill (Anethum graveolens L. ) to temperature and drought stress by hydrothermal time model. IRANIAN JOURNAL OF FIELD CROP SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES)[Internet]. 2019;50(1 ):107-118. Available from: https://sid.ir/paper/375903/en

IEEE: Copy

SEYED FARHAD SABERALI, and Mohammad Naser Mardoodi, “Quantifying of germination response in dill (Anethum graveolens L. ) to temperature and drought stress by hydrothermal time model,” IRANIAN JOURNAL OF FIELD CROP SCIENCE (IRANIAN JOURNAL OF AGRICULTURAL SCIENCES), vol. 50, no. 1 , pp. 107–118, 2019, [Online]. Available: https://sid.ir/paper/375903/en

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