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Journal:   JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE)   WINTER 2017 , Volume 18 , Number 4 ; Page(s) 881 To 892.
 
Paper: 

Seed Germination Modeling Of Lemon Balm As Affected By Temperature And Water Potential: Hydrothermal Time Model
 
 
Author(s):  Nozarpour Elham, Tavakkol Afshari Reza*, Soltani Elias, Majnon Hoseini Naser
 
* DEPARTMENT OF AGRONOMY & PLANT BREEDING, FERDOWSI UNIVERSITY OF MASHHAD, MASHHAD, IRAN
 
Abstract: 
This study was conducted to evaluate the effects of water potential and temperature on seed germination rate of lemon balm (Mellissa officinalis L.). The seeds were incubated in various temperatures of 20, 23, 25, 27, 30 and 32?C and water potentials of 0, -0.2, -0.4, -0.6 and -0.8 MPa in three replications. This study was conducted in Seed Laboratory, College of Agriculture and Natural Resources, University of Tehran in Karaj in 2015. Data were analyzed using combined statistical design in a completely randomized design in several places. Segmented function was evaluated to describe cardinal temperatures. The base, optimum and ceiling temperatures of lemon balm were 17.30, 30.9 and 35?C under optimum conditions of water potential, respectively. The base temperature increased gradually with decreasing water potential and increased to 21.25oC in -0.8 MPa water potential. The optimum temperature decreased to about 28°C by decreasing water potential to -0.6 MPa. Lemon balm seeds did not germinated in 5, 10, 15 and 35°C in any moisture levels. The R2 value of hydrothermal time model was 0.55. The hydrothermal value was 71.41 MPa oday and According to this model seed germination of lemon balm needs to 71.41 MPa oday. The results can be used for future studies on the seed biology and ecology of lemon balm.
 
Keyword(s): CARDINAL TEMPERATURE, GERMINATION, HYDROTHERMAL TIME MODEL, MELISSA OFFICINALIS L, SEGMENTED FUNCTION
 
 
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APA: Copy

NOZARPOUR, E., & Tavakkol Afshari, R., & SOLTANI, E., & MAJNON HOSEINI, N. (2017). SEED GERMINATION MODELING OF LEMON BALM AS AFFECTED BY TEMPERATURE AND WATER POTENTIAL: HYDROTHERMAL TIME MODEL. JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE), 18(4 ), 881-892. https://www.sid.ir/en/journal/ViewPaper.aspx?id=573112



Vancouver: Copy

NOZARPOUR ELHAM, Tavakkol Afshari Reza, SOLTANI ELIAS, MAJNON HOSEINI NASER. SEED GERMINATION MODELING OF LEMON BALM AS AFFECTED BY TEMPERATURE AND WATER POTENTIAL: HYDROTHERMAL TIME MODEL. JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE). 2017 [cited 2022May28];18(4 ):881-892. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=573112



IEEE: Copy

NOZARPOUR, E., Tavakkol Afshari, R., SOLTANI, E., MAJNON HOSEINI, N., 2017. SEED GERMINATION MODELING OF LEMON BALM AS AFFECTED BY TEMPERATURE AND WATER POTENTIAL: HYDROTHERMAL TIME MODEL. JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE), [online] 18(4 ), pp.881-892. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=573112.
 
 
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