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The effect of priming on germination and Seedling growth of alfalfa (Medicago sativa L. ) under salinity stress Текст научной статьи по специальности « Сельское хозяйство, лесное хозяйство, рыбное хозяйство»

Аннотация научной статьи по сельскому хозяйству, лесному хозяйству, рыбному хозяйству, автор научной работы — Jorjandi M., Sharifi Sirchi G.R.

Salinity stress is an abiotic stress which has harmful effects on germination, growth and yield of alfalfa (Medicago sativa L.) in many parts of the world. Seed priming is a way of increasing salt tolerance of plants. In this study, the effect of seed priming on germination and growth of alfalfa seedlings, Bami cultivar, under salinity condition was investigated. According to germination percentage of seeds under In vitro conditions, salicylic acid , Vitamin B12 and distilled water were selected as primes under salinities of 0, 5 and 10 ds.m-2 NaCl solution for further studies. These studies were carried out in a factorial experiment based on Completely Randomized Design (CRD) with three replications in greenhouse under controlled condition (25°C in day/night). Parameters like percentage and rate of germination, dry and fresh weight of seedling and leaf number were measured. Based on our research All of the treatments (priming, salinity and the interaction of priming with salinity) significantly (p2) germination and seedling growth indexes enhanced and also with applying salicylic acid both hypocotyl and radicle lengths improved.

Похожие темы научных работ по сельскому хозяйству, лесному хозяйству, рыбному хозяйству , автор научной работы — Jorjandi M., Sharifi Sirchi G.R.

Текст научной работы на тему «The effect of priming on germination and Seedling growth of alfalfa (Medicago sativa L. ) under salinity stress»

Journal of Stress Physiology & Biochemistry, Vol. 8 No. 3 2012, pp. 234-239 ISSN 1997-0838 Original Text Copyright © 2012 by Jorjandi and Sharifi Sirchi

The Effect of Priming on Germination and Seedling Growth of Alfalfa (Medicago sativa L.) under Salinity Stress

Jorjandi M.* and G.R. Sharifi Sirchi

Department of Agricultural Biotechnology, College of Agriculture, Shahid Bahonar University of Kerman, Iran.

Salinity stress is an abiotic stress which has harmful effects on germination, growth and yield of alfalfa (Medicago sativa L.) in many parts of the world. Seed priming is a way of increasing salt tolerance of plants. In this study, the effect of seed priming on germination and growth of alfalfa seedlings, Bami cultivar, under salinity condition was investigated. According to germination percentage of seeds under In vitro conditions, salicylic acid, Vitamin B12 and distilled water were selected as primes under salinities of 0, 5 and 10 ds.m-2 NaCl solution for further studies. These studies were carried out in a factorial experiment based on Completely Randomized Design (CRD) with three replications in greenhouse under controlled condition (25°C in day/night). Parameters like percentage and rate of germination, dry and fresh weight of seedling and leaf number were measured. Based on our research All of the treatments (priming, salinity and the interaction of priming with salinity) significantly (p2) germination and seedling growth indexes enhanced and also with applying salicylic acid both hypocotyl and radicle lengths improved.

Effect of silver nanoparticles on rice (Oryza sativa L. cv. KDML 105) seed germination and seedling growth

Affiliations

  • 1 Nanoscience and Technology Program, Graduate School, Chulalongkorn University, Bangkok 10330, Thailand.
  • 2 Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
  • 3 Center of Excellence in Environment and Plant Physiology, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
  • 4 Center of Excellence in Environment and Plant Physiology, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand. Electronic address: [email protected]
  • PMID: 24726943
  • DOI: 10.1016/j.ecoenv.2014.03.022

Effect of silver nanoparticles on rice (Oryza sativa L. cv. KDML 105) seed germination and seedling growth

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Authors

Affiliations

  • 1 Nanoscience and Technology Program, Graduate School, Chulalongkorn University, Bangkok 10330, Thailand.
  • 2 Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
  • 3 Center of Excellence in Environment and Plant Physiology, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
  • 4 Center of Excellence in Environment and Plant Physiology, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand. Electronic address: [email protected]
  • PMID: 24726943
  • DOI: 10.1016/j.ecoenv.2014.03.022

Abstract

With the advances in nanotechnology, silver nanoparticles (AgNPs) have been applied in many industries, increasing their potential exposure level in the environment, yet their environmental safety remains poorly evaluated. The possible effects of different sized AgNPs (20, 30-60, 70-120 and 150nm diameter) on jasmine rice, Oryza sativa L. cv. KDML 105, were investigated at different concentrations (0.1, 1, 10, 100 and 1000mg/L) upon seed germination and seedling growth. The results revealed that the level of seed germination and subsequent growth of those seedlings that germinated were both decreased with increasing sizes and concentrations of AgNPs. Based on the analysis of AgNPs accumulation in plant tissues, it implied that the higher uptake was found when the seeds were treated with the smaller AgNPs, 20nm diameter AgNPs, but it was trapped in the roots rather than transported to the leaves. These resulted in the less negative effects on seedling growth, when compared to the seed soaking with the larger AgNPs with 150nm diameter. The negative effects of AgNPs were supported by leaf cell deformation when rice seeds were treated with 150-nm-diameter AgNP at the concentration of 10 or 100mg/L during seed germination. These results further strengthen our understanding of environmental safety information with respect to nanomaterials.

Keywords: Nanotoxicology; Rice; Silver nanoparticle.

Copyright © 2014 Elsevier Inc. All rights reserved.

With the advances in nanotechnology, silver nanoparticles (AgNPs) have been applied in many industries, increasing their potential exposure level in the environment, yet their environmental safety remains poorly evaluated. The possible effects of different sized AgNPs (20, 30-60, 70-120 and 150nm di …