scholarly journals Effect of calcium on reducing salt stress in seed germination and early growth stage of Festuca ovina L.  

2016 ◽  
Vol 62 (No. 10) ◽  
pp. 460-466 ◽  
Author(s):  
F. Salahshoor ◽  
F. Kazemi
Keyword(s):  
Salt Stress ◽  
Seed Germination ◽  
Growth Stage ◽  
Early Growth ◽  
Festuca Ovina ◽  
Early Growth Stage

scholarly journals Bazı Yerel Ekmeklik Buğday (Triticum aestivum L.) Genotiplerinin Erken Gelişme Dönemindeki Tuz Stresine Toleransının İncelenmesi

2020 ◽  
Vol 8 (3) ◽  
pp. 688
Author(s):  
Kübra Özdemir Dirik ◽  
İbrahim Saygılı ◽  
Mahir Özkurt ◽  
Mehmet Ali Sakin
Keyword(s):  
Salt Stress ◽  
Bread Wheat ◽  
Growth Stage ◽  
Dry Weight ◽  
Germination Percentage ◽  
Early Growth ◽  
Stress Factors ◽  
Coleoptile Length ◽  
Early Growth Stage ◽  
Wheat Genotypes

Salinity is one of the most important abiotic stress factors causing serious problems in agricultural areas in the world. In this study aimed to determine the salt stress tolerance of local bread wheat genotypes collected from some provinces of Turkey and provided from seed gene banks in our country in early growth stage. In the research, twenty five local bread wheat genotypes and four registered bread wheat cultivars as standard were used as material. Genotypes were subjected to salt stress germination percentage, radicle length, coleoptile length, shoot length, germination index, root fresh and dry weight, were measured. Germination percentage was decreased significantly by 39.1 % in salt application compared to the control. According to the germination percentages, TR 53869, Kate A1 and Pehlivan genotypes were found to be tolerant to salt stress in early growth stage TGB 000543 and TR 63579 were sensitive. Considering all traits investigated, genotype TR 53869 can be considered as a genotype tolerant to salt stress in early growth stage. It is predicted that this genotype can be used in breeding studies for the areas where salt stress is a problem in wheat.

Effect of Co2+ and Ni2+ on Seed Germination and Seedling Growth of Oilseed Rape

2013 ◽  
Vol 807-809 ◽  
pp. 976-979
Author(s):  
Qing Song Yang ◽  
Yan Zhao
Keyword(s):  
Heavy Metals ◽  
Seed Germination ◽  
Oilseed Rape ◽  
Seedling Growth ◽  
Metal Toxicity ◽  
Growth Stage ◽  
Early Growth ◽  
Early Growth Stage ◽  
Germination And Growth ◽  
Factor Governing

Metal toxicity is an important factor governing germination and growth of plants. We have investigated how Co2+and Ni2+treatment affected germination and early growth stage of oilseed rape (Brassica napusL.). The results showed that the single pollution of Co2+was capable to stimulate the seed germination and seedling growth of oilseed rape at lower concentration, but the phenomena did not exist by the single pollution of Ni2+. Not only polluted by Co2+ but also by Ni2+, all indexes of germination and growth reduced gradually at higher concentration among examined concentration of heavy metals. Meanwhile, effects of Ni2+single pollution were stronger than that of Co2+single pollution.

scholarly journals Temporal Dynamics of Microcystins In Two Reservoirs With Different Trophic Status During The Early Growth Stage of Cyanobacteria

2021 ◽  
Author(s):  
Qingju Xue ◽  
Ming Kong ◽  
Liqiang Xie ◽  
Tong Li ◽  
Mengna Liao ◽  
...  
Keyword(s):  
Growth Stage ◽  
Trophic Status ◽  
Temporal Dynamics ◽  
Influence Factors ◽  
Environmental Parameters ◽  
Early Growth ◽  
Cyanobacterial Blooms ◽  
Organic Matters ◽  
Early Growth Stage ◽  
Density And Biomass

Abstract Harmful cyanobacterial blooms are increasing in frequency and severity, which makes their toxic secondary metabolites of microcystins (MCs) have been widely studied, especially in their distribution and influence factors in different habitats. However, the distribution of MCs on the early growth stage of harmful cyanobacteria and its influence factors and risks are still largely unknown. Thus, in the present study, two reservoirs (Lutian Reservoir and Lake Haitang) with different trophic status in China have been studied weekly from March to May in 2018, when the cyanobacteria communities were just in the early growth stage, to investigate the variation of MCs concentration and the relationships between MCs and environmental parameters. During the investigation, Lutian Reservoir and Lake Haitang were found to be mesotrophic and light eutrophic, respectively. In Lutian Reservoir, the concentration of EMCs was obviously higher than that of IMCs with a mean value of 0.323 and 0.264 μg/L, respectively. Meanwhile, the concentration of EMCs also fluctuated more sharply than that of IMCs. Congeners of IMC-YR and EMC-LR were respectively dominant in total concentrations of IMCs and EMCs. Unsurprisingly, in Lake Haitang, the concentrations of IMC and EMC were both significantly higher than that in Lutian Reservoir with a mean concentration of 0.482 and 0.472 μg/L, respectively. Differently, the concentration of MC-YR was dominant in both IMCs and EMCs, followed by MC-LR. In correlation analysis, the IMCs were significantly and positively correlated with the density and biomass of phytoplankton phyla and potential MCs-producing cyanobacteria and the parameters of water temperature (WT), nutrients and organic matters. Similar results were also observed for EMCs. While the different variation of MCs in two reservoirs might be primarily caused by the differences in WT, nutrients (especially phosphorus), organic matters and the composition of MCs-producing cyanobacteria. In addition, the coexistence of the dominant species of Pseudoanabaena sp., which can produce taste-and-odor compound of 2-methylisoborneol (2-MIB), might have significant impacts on the concentration and toxicity of MCs. Our results suggested that the risks posed by MCs at the early growth stage of cyanobacteria should also deserve our attentions, especially in mesotrophic water bodies.

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