scholarly journals EFECTS OF HERBICIDES ON BARLEY SEEDS GERMINATION DEPEND ON GROWTH STAGE

2020 ◽  
Vol 1 ◽  
pp. 17-21
Author(s):  
Gordana Glatkova
Keyword(s):  
Growth Stage ◽  
Seeds Germination

scholarly journals Promotion effect of nitrogen-doped functional carbon nanodots on the early growth stage of plants

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Qiong Chen ◽  
Xiaohua Ren ◽  
Yuqian Li ◽  
Beibei Liu ◽  
Xiuli Wang ◽  
...  
Keyword(s):  
Growth Stage ◽  
Germination Rate ◽  
Early Growth ◽  
Carbon Nanodots ◽  
Control Group ◽  
Available N ◽  
Promotion Effect ◽  
Early Growth Stage ◽  
Nitrogen Doped ◽  
Seeds Germination

Abstract The objective of this paper is to study the effects of nitrogen-doped functional carbon nanodots (N-FCNs) on the early growth stage of plants. Hydrosoluble and biocompatible N-FCNs with high content of available N (ammonium and amino groups) and carboxyl groups are synthesized by a super green electrochemical method. N-FCNs universally express good eurytopic influence on different species of plants by inducing seeds germination, promoting root development, biomass accumulation, root cell length, chlorophyll level and transpiration of young seedlings. When functional carbon nanodots without N doping (FCNs) promote tomato and corn seeds germination rate by 92.4% and 76.2% maximally, N-FCNs could further improve the germination rate by about 17.0% and 25.5%. N-FCNs can even significantly raise the green vegetable (pakchoi) yield to 2.1 and 1.4 times on the 18th and 30th day. Leaf chlorophyll content is also increased to 1.36 and 1.55 times compared with FCNs treated group and the control group, respectively. The promotion effect of the nanodots is apparently depended on their composition, nanostructure, as well as plant species and age. Nanoscale structure and abundant hydrophilic functional groups can enable N-FCNs regulating the seed germination and plant growth by promoting the uptake and transportation of water and nutrients. The accumulation and transport of N-FCNs are investigated, which reveals N-FCNs are friendly to cells because they are absorbed and transported through nonprotoplast pathway in plant. As a result, N-FCNs have great potential for horticulture application as a biocompatible nano-medium to regulate both metabolism and early development of plants.

scholarly journals DETECT THE FUNGI THAT ASSOCIATED WITH ZINNIA SEEDS AND IT, S EFFECT TO PLANT GROWTH STAGE

2016 ◽  
Vol 47 (4) ◽  
Author(s):  
Saeed & Juber
Keyword(s):  
Plant Growth ◽  
Alternaria Alternata ◽  
Growth Stage ◽  
Growth Parameters ◽  
Disease Incidence ◽  
Preliminary Test ◽  
Control Treatment ◽  
Isolation And Identification ◽  
Highly Pathogenic ◽  
Seeds Germination

This study was carried out to detect the Dematiceous hyphomycetes fungi that associated with Zinnia seeds and to test their pathogenicity and  effect on seed germination and foliage. Results of isolation and identification showed the existence of 8 species of these fungi associated with Zinnia seeds. Alternaria alternata was presented in 81.8% of seed samples with highly rate of frequency 77% in sample No.1. The preliminary test of the pathogenicity by cabbage seeds which included three separated experiments, showed that the 34 tested isolates caused a significant reduction in the rate of cabbage seeds germination except B18 isolate (Phoma eupyrena). Isolates B39 and H7 (Alternaria alternata ) were highly Pathogenic which the percentage of germination in their treatments were 0% compared to 98% in the control. Also test the results of effect of pathogenic isolates on Zinnia seeds germination by using blotter method which included two experiments, Showed that all isolates caused a significant reduction in Zinnia seeds germination in comparing with control treatments except  H6 isolate. two isolates B39 and H7(A. alternate ) gave a highly significant reduction which the percentage of germination in their treatments was 18% and 20%  respectively compared with control treatment. Under green house conditions, isolated H7 and B39 (A. alternate) , A13 (D. state of cochliobolus spicifer) and B8 (P. exigua ) were pathogenic for Zinnia plants with 100% disease incidence and 65-80% disease severity in comparing with control which the disease incidence and severity in their treatment was 2.5%. All these isolates significantly decreased the plant growth parameters.

Observations oh Nucleation and Growth of Voids in Nickel

1970 ◽  
Vol 28 ◽  
pp. 414-415
Author(s):  
J. L. Brimhall ◽  
H. E. Kissinger ◽  
B. Mastel
Keyword(s):  
High Purity ◽  
Growth Stage ◽  
Elevated Temperatures ◽  
Early Growth ◽  
Nucleation And Growth ◽  
Pure Nickel ◽  
Different Temperatures ◽  
Total Fluence ◽  
Neutron Exposure ◽  
Growth Of Voids

Some information on the size and density of voids that develop in several high purity metals and alloys during irradiation with neutrons at elevated temperatures has been reported as a function of irradiation parameters. An area of particular interest is the nucleation and early growth stage of voids. It is the purpose of this paper to describe the microstructure in high purity nickel after irradiation to a very low but constant neutron exposure at three different temperatures.Annealed specimens of 99-997% pure nickel in the form of foils 75μ thick were irradiated in a capsule to a total fluence of 2.2 × 1019 n/cm2 (E > 1.0 MeV). The capsule consisted of three temperature zones maintained by heaters and monitored by thermocouples at 350, 400, and 450°C, respectively. The temperature was automatically dropped to 60°C while the reactor was down.

Effect of GA3 and KNO3 treatments on improving Nepeta crispa seeds germination

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
P Habibi ◽  
K Piri ◽  
J Salari ◽  
H Hajalizadeh
Keyword(s):  
Seeds Germination

Effects of Drip Irrigation on Photosynthetic Characteristics of Leaves and Bracts in Cotton at Late Growth Stage

2015 ◽  
Vol 41 (1) ◽  
pp. 100 ◽  
Author(s):  
Chao ZHANG ◽  
Dong-Xia ZHAN ◽  
Ya-Li ZHANG ◽  
Hong-Hai LUO ◽  
Ling GOU ◽  
...  
Keyword(s):  
Drip Irrigation ◽  
Growth Stage ◽  
Photosynthetic Characteristics ◽  
Late Growth

The Dinitrophenol and Potassium Iodate Influence on Hordeum Vulgare Seedlings Viability\

2018 ◽  
Vol 69 (8) ◽  
pp. 2160-2166
Author(s):  
Elena Todirascu Ciornea ◽  
Gabriela Dumitru ◽  
Ion Sandu
Keyword(s):  
Oxidative Stress ◽  
Hordeum Vulgare ◽  
Antioxidant Enzyme ◽  
Oxygen Radicals ◽  
Free Oxygen Radicals ◽  
Potassium Iodate ◽  
Free Oxygen ◽  
Oxidative Stress Enzymes ◽  
Stress Enzymes ◽  
Seeds Germination

The using of the pesticides of dinitrophenol type in agriculture has as consequence the major pollution of the environment, the plants taking these substances from the soil and once with these ones they reach in the human and animal organism where they product disequilibrium that are interpreted through the accumulation of free oxygen radicals with direct repercussions on the antioxidant enzyme�s synthesis intensification and on their activity�s increase. The apply of treatments on the barley seeds had significant effects regarding the seeds� germination, the young plants� growth, the oxidative stress enzymes� activity, but also regarding the content of photoassimilators and carotenoids pigments.

Soybean Phosphorus and Potassium Deficiency Detection as Influenced by Plant Growth Stage

1988 ◽  
Vol 80 (4) ◽  
pp. 586-591 ◽  
Author(s):  
W. B. Hallmark ◽  
C. J. DeMooy ◽  
H. F. Mooris ◽  
John Pesek ◽  
K. P. Shao ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth Stage ◽  
Potassium Deficiency ◽  
Phosphorus And Potassium
Sign in / Sign up

Export Citation Format

Share Document