Effect of Selenium on Germination Rate and Physiological Property Under Salt Stress in Pakchoi
《北方园艺》[ISSN:1001-0009/CN:23-1247/S]
- Issue:
- 2019年02
- Page:
- 1-7
- Research Field:
- Publishing date:
Info
- Title:
- Effect of Selenium on Germination Rate and Physiological Property Under Salt Stress in Pakchoi
- Author(s):
- CAO Lihua1; ZHU Juanjuan2
- (1.Agricultural Science and Technology Development Centre of Ningxia,Yinchuan,Ningxia 750001;2.College of Biological Science and Engineering,North Minzu University,Yinchuan,Ningxia 750021)
- Keywords:
- selenium; salt stress; seed; germination rate; physiological property
- PACS:
- -
- DOI:
- 10.11937/bfyy.20181090
- Abstract:
- The current study explored salt tolerance difference of different varieties in pakchoi and illustrated effects of exogenous selenium (Na2SeO3) on germination feature and physiological property under salt stress in pakchoi in order to reveal function of selenium remitting salt stress.‘Four seasons pakchoi’‘Jinxin one’ ‘Lukang’ were cultivated in manual climatic box with 70% humidity and 25 ℃.The effects of NaCl and selenium on seed germination potential,germination rate,germination index,vigor index,relative salt-harmed rate,salt-tolerance index,seedling length and MDA content,as well as antioxidant enzymes (SOD,POD and CAT) activities were illustrated.The results showed that seed relative salt-harmed rate was 3.33% and 30.00% for ‘Four seasons pakchoi’,-8.22% and 27.4% for ‘Jinxin one’,25.34% and 56.36% for ‘Lukang’ in 150 mmol·L-1 NaCl and 200 mmol·L-1 NaCl treatments,respectively.Thus,‘Lukang’ had the weakest salt tolerance among selected different varieties in pakchoi.Meanwhile,germination potential,germination rate,germination index,vigor index,salt-tolerance index,and seedling length in 150 mmol·L-1 NaCl treatment and 1 mg·L-1Na2SeO3+150 mmol·L-1 NaCl treatments were significant lower than those in control.However,germination potential,germination rate,germination index,vigor index,salt-tolerance index,and seedling length in 1 mg·L-1 Na2SeO3+100 mmol·L-1 NaCl treatment were increased by 17.37%,5.52%,5.36%,159.87% and 143.91%,respectively,in comparison with those in 150 mmol·L-1 NaCl treatment.Relative salt-harmed rate was decreased to 8.28% and salt tolerance index was increased to 77.07%.In addition,MDA content was decreased significantly in 1 mg·L-1Na2SeO3+150 mmol·L-1 NaCl treatment while POD and CAT activities was increased.Therefore,1 mg·L-1 Na2SeO3 could relieve salt stress in pakchoi.
Last Update: 2019-01-24