scholarly journals The Effects of Red Clover Seed Treatment with Cold Plasma and Electromagnetic Field on Germination and Seedling Growth Are Dependent on Seed Color

2021 ◽  
Vol 11 (10) ◽  
pp. 4676
Author(s):  
Anatolii Ivankov ◽  
Rasa Zukiene ◽  
Zita Nauciene ◽  
Laima Degutyte-Fomins ◽  
Irina Filatova ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Cold Plasma ◽  
Trifolium Pratense ◽  
Root Nodules ◽  
Germination Rate ◽  
Red Clover ◽  
Seed Color ◽  
Seed Treatments ◽  
Capacitively Coupled ◽  
Clover Seed

This study aimed to estimate the effects of cold plasma (CP) and electromagnetic field (EMF) treatment of red clover (Trifolium pratense) seeds with different coat colors on germination kinetics, the content of seed phytohormones, and the growth of seedlings. Seeds of red clover cultivar ‘Arimaiciai’ were treated with radio-frequency EMF or capacitively coupled low-pressure CP for different durations. There were no differences in germination kinetics between yellow, brown, and dark purple seeds in control, but the germination rate of seeds treated with CP and EMF depended on seed color: The germination of yellow seeds was stimulated stronger compared to dark purple and brown seeds, and EMF did not stimulate germination in brown seeds. The content of phytohormones in control seeds and the shift in their amount induced by seed treatments were also strongly dependent on seed color. No relationship was found between the effect on germination kinetics and changes in phytohormone levels. In the control, seedlings growing from the yellow seeds were heavier, and the number of root nodules was 12.5 times larger compared to seedlings of dark purple seeds. Seed treatments with CP and EMF significantly increased the number of root nodules, and this effect was stronger in seedlings from dark purple seeds compared to those from yellow seeds.

INFLUENCE DES CULTIVARS ET DES STADES DE PRÉLÈVEMENT DE LA PREMIÈRE POUSSE SUR LA PRODUCTION DE SEMENCE DE TRÈFLE ROUGE

1990 ◽  
Vol 70 (4) ◽  
pp. 1071-1080 ◽  
Author(s):  
LUCIUS BELZILE
Keyword(s):  
Seed Germination ◽  
Seed Production ◽  
Seed Yield ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Kernel Weight ◽  
Climatic Conditions ◽  
Cultivar Group ◽  
Stage Of Development ◽  
Clover Seed

For five years, the effect of cultivars and vegetative stage of cutting were measured on red clover (Trifolium pratense L.) seed production. The first group of cultivars included Hungaropoli, Ottawa and Lakeland harvested in 1981 and 1982. The second group included Arlington, Florex and Prosper I harvested in 1984, 1985 and 1987. The total annual seed yield differed within cultivars and the highest seed yield was obtained with Hungaropoly and Florex. In the first cultivar group, the tetraploid Hungaropoly obtained a kernel weight higher than the diploids Lakeland and Ottawa. In the second group of cultivars, all diploids, Arlington yielded the highest kernel weight. The percentage of seed germination of Hungaropoly was higher than Lakeland and Ottawa while for Florex it was slightly higher than Arlington and Prosper I. A prior vegetative cutting is essential for good seed yield. In the absence of vegetative cutting seed weight seemed improved. The stage of development at which vegetative cutting is done has little influence on percentage seed germination. These results have shown that despite the strong effect of climatic conditions on seed production, the choice of the optimum stage for vegetative cutting and a well adapted cultivar are important aspects in successful seed production.Key words: Red clover, seed production, cultivar, stage of cutting

Phytotoxicity of Glyphosate to Italian Ryegrass(Lolium multiflorum)and Red Clover(Trifolium pratense)

Weed Science ◽  
1978 ◽  
Vol 26 (1) ◽  
pp. 32-36 ◽  
Author(s):  
J. Segura ◽  
S. W. Bingham ◽  
C. L. Foy
Keyword(s):  
Shoot Growth ◽  
Trifolium Pratense ◽  
Lolium Multiflorum ◽  
Red Clover ◽  
Soil Surface ◽  
Dry Weight ◽  
Italian Ryegrass ◽  
Foliar Absorption ◽  
Percent Germination ◽  
Clover Seed

The phytotoxicity of glyphosate [N-(phosphonomethyl) glycine] on seeds (protected or non-protected with soil) and seedlings of Italian ryegrass(Lolium multiflorumLam.) and red clover(Trifolium pratenseL.) was studied in the greenhouse. Percent germination of Italian ryegrass seeds covered with soil was significantly reduced with glyphosate applied at 4 kg/ha. The direct treatment over the seeds on the soil surface was more toxic, reducing the number of established seedlings at dosages of 3 and 4 kg/ha. In the two red clover seed treatments, germination was significantly reduced with 2 kg/ha of herbicide. Even though germination was reduced at intermediate rates of glyphosate, shoot growth and tillering were improved and yields of dry weight were equivalent to that of untreated plants. Postemergence applications of glyphosate were phytotoxic to both species with the effects becoming more pronounced at increasing dosages. However, at equal dosage, red clover was less susceptible than Italian ryegrass. The patterns of foliar absorption and translocation of14C from14C-glyphosate was similar in Italian ryegrass and red clover.14C was translocated throughout the plants and exhibited apoplastic and symplastic movement.

scholarly journals A Novel Method to Overcome Coat-Imposed Seed Dormancy in Lupinus albus L. and Trifolium pratense L.

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Iskender Tiryaki ◽  
Mustafa Topu
Keyword(s):  
Seed Dormancy ◽  
Trifolium Pratense ◽  
Germination Rate ◽  
Lupinus Albus ◽  
Red Clover ◽  
Treatment Method ◽  
Germination Percentage ◽  
Hot Water ◽  
White Lupin ◽  
Novel Method

We have developed a novel method to overcome coat-imposed seed dormancy in legume plants. Seeds of Lupinus albus L. and Trifolium pratense L. were stored in a freezer at −80°C for a period of time and then immediately treated with or without hot water at 90°C for 5 seconds. Germination tests were carried out in darkness at 20±1.0°C with four replications in a completely randomized design. Final germination percentage (FGP), germination rate, and synchrony of seeds were evaluated. The results showed that new approach of freeze-thaw scarification provided high percentage of germinations in white lupin (84.16%) and red clover (74.50%) seeds while control seeds had FGPs of 3.3% and 26.0%, respectively. The immediate thawing of frozen seeds in hot water for 5 seconds was found not only an effective and reliable but also the quickest seed treatment method to prevail against coat-imposed seed dormancy in legume species and may become operationally applicable to other plant species.

Effet des types de sol sur la production de semence du trèfle rouge

1991 ◽  
Vol 71 (4) ◽  
pp. 1039-1046 ◽  
Author(s):  
Lucius Belzile
Keyword(s):  
Seed Production ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Climatic Conditions ◽  
Thousand Grain Weight ◽  
Light Soil ◽  
Different Types ◽  
Percent Germination ◽  
Trifolium Pratense L ◽  
Clover Seed

Red clover (Trifolium pratense L.) was grown for seed production after the seeding year on two different types of soils, in the same climatic area. An important difference in yield which was often related to cultivar and sometimes to year was observed between the two soils — the light soil, Saint-André gravelly loam, produced more seed than the heavy Kamouraska clay. Seed yield differed between cultivars with Florex and Arlington producing the most. On an annual basis, the thousand-grain weight was higher on Kamouraska than on Saint-André. The percent germination was not influenced by soil type and cultivar but variation between years was observed. The production of heads per plant was higher on Saint-André. The number of seeds produced per plant and per head was, as for yield, higher on Saint-André than Kamouraska. The influence of cultivars and years was not always visible on these last parameters. Therefore these results demonstrate that generally the success of red clover seed production depends not only on cultivar and climatic conditions, but that within the same climatic area the type of soil is a major factor. Key words: Red clover, seed production, soil effect, year of harvest, cultivar, yield components

THE CLOVER-SEED FLY—A NEW INSECT PEST

1879 ◽  
Vol 11 (3) ◽  
pp. 44-45 ◽  
Author(s):  
J. A. Lintner
Keyword(s):  
Trifolium Pratense ◽  
Insect Pest ◽  
Red Clover ◽  
Clover Seed

In the summer of 1877, my attention was called to some “worms” which had been discovered in the heads of red clover (Trifolium pratense), and were said to be preying upon the seeds. They were found to be minute maggot-like creatures, hidden within the seed-pods and entirely destroying the seeds which they attacked.

scholarly journals Determination of relevant parameters in the red clover seed processing (Trifolium pratense L.)

2018 ◽  
Vol 24 (1) ◽  
pp. 57-64 ◽  
Author(s):  
Dragoslav Đokić ◽  
Rade Stanisavljević ◽  
Dragan Terzić ◽  
Jasmina Milenković ◽  
Zoran Lugić ◽  
...  
Keyword(s):  
Trifolium Pratense ◽  
Red Clover ◽  
Seed Processing ◽  
Trifolium Pratense L ◽  
Clover Seed

scholarly journals Abiotic Stress and Red Clover: A Less Explored Area of Research

2020 ◽  
pp. 1-5
Author(s):  
Afsha Parween ◽  
Vikas Singh ◽  
Monika Bajpai
Keyword(s):  
Abiotic Stress ◽  
Trifolium Pratense ◽  
Root Nodules ◽  
Red Clover ◽  
Climatic Conditions ◽  
Stress Conditions ◽  
Symbiotic Association ◽  
Centre Of Origin ◽  
Inflammatory Conditions ◽  
Phosphorus And Potassium

Red clover (Trifolium pratense L.) is one of the main forage species from temperate regions and its centre of origin is located in southern Europe and southern Eurasia. Although red clover is Mediterranean in origin, it is a widely adapted species grown in many climatic conditions around the world. It is a perennial, medicinal herb from legume family and it grows best in calcium, phosphorus and potassium rich soils. This medicinal plant is in symbiotic association with bacteria present in its root nodules, thus the plant is capable of fixing the atmospheric nitrogen into the soil thereby increasing the quality of the soil. Red clover is typically used to treat a number of respiratory ailments such as asthma, bronchitis, and bronchitis, skin disorders such as eczema and psoriasis, inflammatory conditions like arthritis, and to treat women's health problems especially in giving relief from menopausal symptoms. However, the response of Red Clover under abiotic stress conditions is a less explored area of research. The present review highlights the existing potential of Red clover in fighting abiotic stress conditions and also explains the need of developing resistant varieties of this plant to meet the future challenges.

Effect of seed treatment with cold plasma and electromagnetic field on red clover germination, growth and content of major isoflavones

2020 ◽  
Vol 53 (26) ◽  
pp. 264001 ◽  
Author(s):  
Vida Mildažienė ◽  
Giedrė Paužaitė ◽  
Zita Naučienė ◽  
Rasa Žūkienė ◽  
Asta Malakauskienė ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Seed Treatment ◽  
Cold Plasma ◽  
Red Clover

scholarly journals Regulation of the abundance of clover seed weevils, Apion spp. (Coleoptera: Curculionidae) in a seed stand of red clover (Trifolium pratense L.)

2013 ◽  
Vol 45 (3) ◽  
pp. 19 ◽  
Author(s):  
P. Kolařík ◽  
J. Rotrekl
Keyword(s):  
Marked Reduction ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Economic Damage ◽  
Herb Layer ◽  
Trifolium Pratense L ◽  
Clover Seed ◽  
Seed Stand ◽  
Sweep Net

The clover seed weevils, <em>Apion trifolii</em> and <em>Protapion apricans</em>, members of the genus Apion, are responsible for causing serious economic damage in clover. In 2010-2012, the effectiveness of some insecticides against clover seed weevils in the genus <em>Apion</em> were tested in red clover stands. The efficacy of different products was evaluated on the basis of analyses of specimens trapped in the herb layer of red clover using a sweep net and red clover heads sampled in individual plots. Over the course of these trials, the applications of the products tested resulted in a marked reduction in their numbers (particularly of adults and, to a lesser extent, also of larvae). The highest efficacy was observed with Biscaya 240 (A.I. thiacloprid) and Mospilan 20 SP (A.I. acetamiprid). Results obtained in this study corroborated the low efficacy of the insecticide Karate Zeon Technology 5 CS against seed weevils of the genus <em>Apion</em>.

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