Evaluation of Seed Germination and Seedling Growth Characteristics of Sweet Pepper (Capsicum annuum) Under Salinity and Drought Treatment

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AMINIFARD MOHAMMAD HOSSEIN; BAYAT HASSAN

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Journal: IRANIAN JOURNAL OF SEED RESEARCH Year:2020 | Volume:6 | Issue:2 Page(s): 137-149

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Title

Evaluation of Seed Germination and Seedling Growth Characteristics of Sweet Pepper (Capsicum annuum) Under Salinity and Drought Treatment

Author(s)

AMINIFARD MOHAMMAD HOSSEIN | BAYAT HASSAN | Issue Writer Certificate

Keywords

Germination percentageQ2

Germination rateQ2

NaClQ2

Polyethylene glycolQ2

Abstract

Introduction: Pepper (Capsicum annum L. ), which belongs to the solanaceae family, is one of the most important vegetable and garden products. Due to its nutritional value, its use tends to rise all over the world. Germination and seed emergence are strongly influenced by environmental stresses such as salinity and drought. Drought stress affects various aspects of plant growth. It reduces germination, delays vegetative growth and reduces dry matter in the plant. Salinity stress, as an environmental stress, is a limiting factor for the growth and development of crops and garden production. Materials and Methods: The present study was conducted to evaluate the impact of drought and salinity stress on seed germination characteristics of sweet pepper (Capsicum annuum L. ) in two separate experiments, using a completely randomized design with three replications in the Faculty of Agriculture, University of Birjand in 2016. PEG 6000 was used for drought stress and NaCl, for salinity stress. The treatments included drought and salinity stress levels (0,-2,-4,-6,-8,-10 and-12 bars). Seeds were disinfected with sodium hypochlorite (2%) solution for 1 minute, and were then washed with distilled water. The medium was petri dishes with a diameter of 9 cm. 25 seeds were placed on two layers of filter papers in each dish. 5 ml of distilled water or solution was added to each petri dish. The measured traits were Germination percentage, Germination rate, seed vigor index, radicle length, plumule length, ratio of radicle length to plumule length and dry weight of radical and plumule. Results: The results indicated that salinity and drought stress had significant effects on seed germination characteristics of sweet pepper so that salinity stress with osmotic potential of-10 and-12 bar decreased the germination of sweet pepper and reached zero. Increasing salinity stress from zero to-12 bar decreased Germination percentage, Germination rate and seedling dry weight by 43. 75, 41. 67 and 93. 46%, respectively. The results indicated that with increases in both salinity and drought stress, seed vigor index decreased significantly. The results showed that with increasing drought and salinity stress from 0 to-12 bar, seed vigor index decreased 96. 58 and 100 percent, respectively. Conclusions: The results of this study showed that the tolerance of sweet pepper to salinity stress was higher than its tolerance to drought stress at the germination stage, but for more accurate evaluation, it is necessary to conduct additional experiments in the field and in the greenhouse.

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APA: Copy

AMINIFARD, MOHAMMAD HOSSEIN, & BAYAT, HASSAN. (2020). Evaluation of Seed Germination and Seedling Growth Characteristics of Sweet Pepper (Capsicum annuum) Under Salinity and Drought Treatment. IRANIAN JOURNAL OF SEED RESEARCH, 6(2 ), 137-149. SID. https://sid.ir/paper/368697/en

Vancouver: Copy

AMINIFARD MOHAMMAD HOSSEIN, BAYAT HASSAN. Evaluation of Seed Germination and Seedling Growth Characteristics of Sweet Pepper (Capsicum annuum) Under Salinity and Drought Treatment. IRANIAN JOURNAL OF SEED RESEARCH[Internet]. 2020;6(2 ):137-149. Available from: https://sid.ir/paper/368697/en

IEEE: Copy

MOHAMMAD HOSSEIN AMINIFARD, and HASSAN BAYAT, “Evaluation of Seed Germination and Seedling Growth Characteristics of Sweet Pepper (Capsicum annuum) Under Salinity and Drought Treatment,” IRANIAN JOURNAL OF SEED RESEARCH, vol. 6, no. 2 , pp. 137–149, 2020, [Online]. Available: https://sid.ir/paper/368697/en

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