THE EFFECTS OF DROUGHT STRESS AND PYTHIUM ULTIMUM ON SEED GERMINATION AND SEEDLING GROWTH IN SAFFLOWER

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PAHLEVANI M.; GHADERI M.; BAGMOHAMADI H.; RAZAVI S.E.

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Journal: Journal of Plant Production Research Year:2012 | Volume:19 | Issue:2 Page(s): 89-104

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Information Journal Paper

Title

THE EFFECTS OF DROUGHT STRESS AND PYTHIUM ULTIMUM ON SEED GERMINATION AND SEEDLING GROWTH IN SAFFLOWER

Author(s)

PAHLEVANI M. | GHADERI M. | BAGMOHAMADI H. | RAZAVI S.E. | Issue Writer Certificate

Keywords

POLYETHYLENE GLYCOLQ2

ZOOSPOREQ2

GENOTYPEQ2

SUSCEPTIBILITYQ3

DROUGHTQ1

Abstract

This study was performed to evaluate the effect of osmotic stress due to PEG on seed germination of safflower in Pythium ultimum infested environment. The experiment was conducted in factorial fashion in which four safflower GENOTYPEs (Dinger, Aceteria, LRV- 5151, and Arak 2811), and four osmotic stress levels (0, -10, -14, and -18 bar) were treated on paper towel media. The evaluated traits that were included, percent and speed of seed germination, speed of damping off, ratio of damping off to germination, and seedling dry weight. Results indicated that for the all traits, levels of osmotic stress had significant difference from control (0 bar). Unlike zero levels of osmotic stress (control) that fungal infection caused reduction in percent and speed of seed germination and seedling dry weight, in osmotic stress level (-10 bar) pathogen caused increases these traits. Increasing of osmotic levels from zero to -10 bar in infested environment caused reduction in speed of damping off, ratio of damping off to germination. Results showed that, although individual effects of osmotic stress and pathogen infection caused decrease in seeds germination and seedling growth properties, but their interactions improved percent and speed of germination in -10 bar in relation to control. Results of this study indicated that interaction between pathogen and osmotic stress had positive to some extant and could be useful for crop, so safflower could be cultivate in these conditions.

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APA: Copy

PAHLEVANI, M., GHADERI, M., BAGMOHAMADI, H., & RAZAVI, S.E.. (2012). THE EFFECTS OF DROUGHT STRESS AND PYTHIUM ULTIMUM ON SEED GERMINATION AND SEEDLING GROWTH IN SAFFLOWER. JOURNAL OF PLANT PRODUCTION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 19(2), 89-104. SID. https://sid.ir/paper/155782/en

Vancouver: Copy

PAHLEVANI M., GHADERI M., BAGMOHAMADI H., RAZAVI S.E.. THE EFFECTS OF DROUGHT STRESS AND PYTHIUM ULTIMUM ON SEED GERMINATION AND SEEDLING GROWTH IN SAFFLOWER. JOURNAL OF PLANT PRODUCTION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2012;19(2):89-104. Available from: https://sid.ir/paper/155782/en

IEEE: Copy

M. PAHLEVANI, M. GHADERI, H. BAGMOHAMADI, and S.E. RAZAVI, “THE EFFECTS OF DROUGHT STRESS AND PYTHIUM ULTIMUM ON SEED GERMINATION AND SEEDLING GROWTH IN SAFFLOWER,” JOURNAL OF PLANT PRODUCTION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 19, no. 2, pp. 89–104, 2012, [Online]. Available: https://sid.ir/paper/155782/en

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