Evaluating the Relationships among Traits in Thyme (Thymus daenensis subsp. daenensis) Ecotypes under Non-Stress and Drought Stress Conditions

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GOLESTANI MASOUD

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Journal: JOURNAL OF CROP ECOPHYSIOLOGY (AGRICULTURE SCIENCE) Year:2020 | Volume:13 | Issue:4 (52) Page(s): 517-534

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Title

Evaluating the Relationships among Traits in Thyme (Thymus daenensis subsp. daenensis) Ecotypes under Non-Stress and Drought Stress Conditions

Author(s)

GOLESTANI MASOUD | Issue Writer Certificate

Keywords

CorrelationQ1

Factor analysisQ2

Path analysisQ2

Stepwise regressionQ2

Abstract

To study the relationships among traits of thyme ecotypes, two experiments under non-stress and drought stress conditions were carried out using randomized complete block design with four replications in Abarkouh during 2017-2018 cropping season. Correlation analysis was used for evaluation of relationships among traits. Stepwise regression and Path analysis were used for determination of effective traits on shoot dry weight and for determination of direct and indirect effects on shoot dry weight, respectively. Factor analysis was used for identifying factors that produce special Correlations among measured variables. Correlation coefficients among traits showed that there were significant positive Correlation among traits like shoot fresh and dry weight with maximum and minimum diameter of canopy, canopy area, leaf length, number of stems per plant and essential oil yield under both conditions. The result of Stepwise regression showed that canopy area, leaf width, leaf length, number of flower in inflorescence and number of days to 50% of flowering under non-stress condition and canopy area, leaf width, leaf length and number of days to 50% of flowering under stress condition were entered to the Stepwise regression model. The result of Path analysis under both conditions showed that canopy area had the highest direct and positive effect on shoot dry weight and leaf width and negative effect on shoot dry weight. Based on Factor analysis, three factors were selected and these factors explained 76% of total variation under both conditions and traits such as shoot fresh and dry weight, maximum and minimum diameter of canopy, canopy area, leaf length, number of stems per plant and essential oil yield were main components of these factors.

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APA: Copy

GOLESTANI, MASOUD. (2020). Evaluating the Relationships among Traits in Thyme (Thymus daenensis subsp. daenensis) Ecotypes under Non-Stress and Drought Stress Conditions. JOURNAL OF CROP ECOPHYSIOLOGY (AGRICULTURE SCIENCE), 13(4 (52) ), 517-534. SID. https://sid.ir/paper/182872/en

Vancouver: Copy

GOLESTANI MASOUD. Evaluating the Relationships among Traits in Thyme (Thymus daenensis subsp. daenensis) Ecotypes under Non-Stress and Drought Stress Conditions. JOURNAL OF CROP ECOPHYSIOLOGY (AGRICULTURE SCIENCE)[Internet]. 2020;13(4 (52) ):517-534. Available from: https://sid.ir/paper/182872/en

IEEE: Copy

MASOUD GOLESTANI, “Evaluating the Relationships among Traits in Thyme (Thymus daenensis subsp. daenensis) Ecotypes under Non-Stress and Drought Stress Conditions,” JOURNAL OF CROP ECOPHYSIOLOGY (AGRICULTURE SCIENCE), vol. 13, no. 4 (52) , pp. 517–534, 2020, [Online]. Available: https://sid.ir/paper/182872/en

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