Reaction of Germination and Seedling Growth of Redroot Pigweed (Amaranthus retroflexus) to Salinity and Drought Stress
Salt and drought are two major environmental stresses that affect growth and development of plants. In order to study the effects of sodium chloride and polyethylene glycol (6000) on germination characteristics and early seedling growth of redroot pigweed (Amaranthus retroflexus), two completely ran...
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doaj-f7f005a841ec40e4bd095f41f7a4dbd72020-11-24T21:43:30ZfasYasouj Universityپژوهشهای بذر ایران2383-12512383-14802018-03-01422335Reaction of Germination and Seedling Growth of Redroot Pigweed (Amaranthus retroflexus) to Salinity and Drought StressGoudarz Ahmadvand0Masoume Dehghan Banadaki1Javad Alimoradi2Sara Goudarzi3Sasan Ardalani4 University of Bu-Ali Sina, Hamedan, Iran University of Bu-Ali Sina, Hamedan, Iran University of Bu-Ali Sina, Hamedan, Iran University of Bu-Ali Sina, Hamedan, Iran University of Bu-Ali Sina, Hamedan, Iran Salt and drought are two major environmental stresses that affect growth and development of plants. In order to study the effects of sodium chloride and polyethylene glycol (6000) on germination characteristics and early seedling growth of redroot pigweed (Amaranthus retroflexus), two completely randomized designs with 4 replications were conducted at Weed Research Laboratory of Bu-Ali Sina University, Hamedan in 2015. The treatments were salt and drought stress as osmotic potential at six levels (zero (control), -2, -4, -6, -8 and -10 bar). The results showed that when stress increased, germination percentage, germination speed, radicle and plumule length, seedling length and seedling vigor index decreased significantly (p≤ 0.05). With an increase in the intensity of salt and drought stress from zero to -10 bars, redroot pigweed seed germination reduced about 96 and 100 percent, respectively, compared with the control. The highest seedling length in both stresses was observed in the control (7.71 cm) and by increasing stress intensity to -10 bars in both salinity and drought stresses, seedling length was reduced to 1.52 cm and 0 cm, respectively. Fitting of the three-parameter logistic model provided a successful estimation of the relationship between salt and drought stress levels and germination percentage of redroot pigweed as well as germination speed. This model showed that salinity and drought stress at -3.58 and -3.75 bars caused a 50% reduction in maximum germination percentage of redroot pigweed. In addition, 50% decrease in germination speed caused by salinity and drought stress was observed in -2.58 and -2.88 bars, respectively. Highlights: The germination characteristics of redroot pigweed were studied under salt and drought stresses. Drought stress reduced germination percentage of redroot pigweed.http://yujs.yu.ac.ir/jisr/browse.php?a_code=A-10-235-1&slc_lang=en&sid=1 Germination Osmotic potential Seedling Weed |
collection |
DOAJ |
language |
fas |
format |
Article |
sources |
DOAJ |
author |
Goudarz Ahmadvand Masoume Dehghan Banadaki Javad Alimoradi Sara Goudarzi Sasan Ardalani |
spellingShingle |
Goudarz Ahmadvand Masoume Dehghan Banadaki Javad Alimoradi Sara Goudarzi Sasan Ardalani Reaction of Germination and Seedling Growth of Redroot Pigweed (Amaranthus retroflexus) to Salinity and Drought Stress پژوهشهای بذر ایران Germination Osmotic potential Seedling Weed |
author_facet |
Goudarz Ahmadvand Masoume Dehghan Banadaki Javad Alimoradi Sara Goudarzi Sasan Ardalani |
author_sort |
Goudarz Ahmadvand |
title |
Reaction of Germination and Seedling Growth of Redroot Pigweed (Amaranthus retroflexus) to Salinity and Drought Stress |
title_short |
Reaction of Germination and Seedling Growth of Redroot Pigweed (Amaranthus retroflexus) to Salinity and Drought Stress |
title_full |
Reaction of Germination and Seedling Growth of Redroot Pigweed (Amaranthus retroflexus) to Salinity and Drought Stress |
title_fullStr |
Reaction of Germination and Seedling Growth of Redroot Pigweed (Amaranthus retroflexus) to Salinity and Drought Stress |
title_full_unstemmed |
Reaction of Germination and Seedling Growth of Redroot Pigweed (Amaranthus retroflexus) to Salinity and Drought Stress |
title_sort |
reaction of germination and seedling growth of redroot pigweed (amaranthus retroflexus) to salinity and drought stress |
publisher |
Yasouj University |
series |
پژوهشهای بذر ایران |
issn |
2383-1251 2383-1480 |
publishDate |
2018-03-01 |
description |
Salt and drought are two major environmental stresses that affect growth and development of plants. In order to study the effects of sodium chloride and polyethylene glycol (6000) on germination characteristics and early seedling growth of redroot pigweed (Amaranthus retroflexus), two completely randomized designs with 4 replications were conducted at Weed Research Laboratory of Bu-Ali Sina University, Hamedan in 2015. The treatments were salt and drought stress as osmotic potential at six levels (zero (control), -2, -4, -6, -8 and -10 bar). The results showed that when stress increased, germination percentage, germination speed, radicle and plumule length, seedling length and seedling vigor index decreased significantly (p≤ 0.05). With an increase in the intensity of salt and drought stress from zero to -10 bars, redroot pigweed seed germination reduced about 96 and 100 percent, respectively, compared with the control. The highest seedling length in both stresses was observed in the control (7.71 cm) and by increasing stress intensity to -10 bars in both salinity and drought stresses, seedling length was reduced to 1.52 cm and 0 cm, respectively. Fitting of the three-parameter logistic model provided a successful estimation of the relationship between salt and drought stress levels and germination percentage of redroot pigweed as well as germination speed. This model showed that salinity and drought stress at -3.58 and -3.75 bars caused a 50% reduction in maximum germination percentage of redroot pigweed. In addition, 50% decrease in germination speed caused by salinity and drought stress was observed in -2.58 and -2.88 bars, respectively.
Highlights:
The germination characteristics of redroot pigweed were studied under salt and drought stresses.
Drought stress reduced germination percentage of redroot pigweed. |
topic |
Germination Osmotic potential Seedling Weed |
url |
http://yujs.yu.ac.ir/jisr/browse.php?a_code=A-10-235-1&slc_lang=en&sid=1 |
work_keys_str_mv |
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