Seed-germination inhibition by volatile alcohols and other compounds associated withAmaranthus palmeri residues

1988 ◽  
Vol 14 (7) ◽  
pp. 1633-1648 ◽  
Author(s):  
Judith M. Bradow ◽  
William J. Connick
Keyword(s):  
Seed Germination ◽  
Germination Inhibition

Phytochromes and seed germination

1998 ◽  
Vol 8 (3) ◽  
pp. 317-329 ◽  
Author(s):  
Jorge J. Casal ◽  
Rodolfo A. Sánchez
Keyword(s):  
Seed Germination ◽  
Red Light ◽  
High Irradiance ◽  
Phytochrome B ◽  
Phytochrome A ◽  
Germination Inhibition ◽  
Growth Capacity ◽  
Small Family ◽  
Recent Advances ◽  
Signalling Process

AbstractThe control of seed germination by red and far-red light is one of the earliest documented phytochrome-mediated processes Phytochrome is now known to be a small family of photoreceptors whose apoproteins are encoded by different genes Phytochrome B (phyB) is present in dry seeds and affects germination of dark imbibed seeds but other phytochromes could also be involved Phytochrome A (phyA) appears after several hours of imbibition and mediates very-low-fluence responses PhyB and other phytochromes different from phyA mediate the classical low-fluence responses The phytochrome involved in high-irradiance responses of seed germination (inhibition of germination under continuous far-red) has not been unequivocally established, although phyA is the most likely candidate Phytochrome can affect embryo growth capacity and/or the constraint imposed by the tissues surrounding the embryo At least in some species, gibberellins participate in the signalling process In the field, phyA has been implicated in the perception of light during soil cultivations, and phyB would be involved in the perception of red/far-red ratios associated with the presence of gaps in the canopy This review describes recent advances in phytochrome research, particularly those derived from the analysis of germination in specific mutants, and their connection with traditional observations on phytochrome control of seed germination

Carbon Monoxide Alleviates Wheat Seed Germination Inhibition and Counteracts Lipid Peroxidation Mediated by Salinity

2006 ◽  
Vol 48 (10) ◽  
pp. 1168-1176 ◽  
Author(s):  
Sheng Xu ◽  
Zhi-Sheng Sa ◽  
Ze-Yu Cao ◽  
Wei Xuan ◽  
Ben-Kai Huang ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Carbon Monoxide ◽  
Seed Germination ◽  
Wheat Seed ◽  
Germination Inhibition

The influence of diffused light and temperature on seed germination of three genetically nondormant lines of wild oats (Avena fatua) and its adaptive significance

1986 ◽  
Vol 64 (9) ◽  
pp. 1910-1915 ◽  
Author(s):  
Ramma Sawhney ◽  
Andrew I. Hsiao ◽  
William A. Quick
Keyword(s):  
Seed Germination ◽  
Light Intensity ◽  
Adaptive Significance ◽  
Avena Fatua ◽  
Wild Oat ◽  
Germination Inhibition ◽  
Wild Oats ◽  
Two Factors ◽  
Incubation Temperatures ◽  
Diffused Light

Freshly harvested seeds of three genetically nondormant populations of wild oat (Avena fatua L.) germinated readily in the dark at optimum temperatures. Direct or diffused light caused germination inhibition in seeds of all these populations. This light-induced germination inhibition was intensity dependent; the higher the light intensity, the greater the inhibition. Germination inhibition by light was accentuated by higher incubation temperatures, indicating an interaction between these two factors on the induction of secondary seed dormancy in genetically nondormant populations. This interaction may be of adaptive significance to the survival of nondormant populations, and reconciles some apparently conflicting reports in the literature.

scholarly journals Utility of Seed Germination Inhibition Test for Early Pregnancy Diagnosis in Buffaloes

2019 ◽  
Vol 8 (06) ◽  
pp. 1453-1458
Author(s):  
V. Aswathnarayanappa ◽  
P.M. Gururaj ◽  
Nagappa Banuvalli ◽  
M. Harisha
Keyword(s):  
Seed Germination ◽  
Early Pregnancy ◽  
Inhibition Test ◽  
Germination Inhibition ◽  
Pregnancy Diagnosis

scholarly journals Allelopathic tolerance of alfalfa (Medicago sativa L.) varieties to dodder (Cuscuta epithymum L.)

2017 ◽  
Vol 32 (1) ◽  
pp. 51-59
Author(s):  
Plamen Marinov-Serafimov ◽  
Irena Golubinova ◽  
Diana Marinova
Keyword(s):  
Seed Germination ◽  
Medicago Sativa ◽  
Germination Inhibition ◽  
Forage Crops ◽  
Initial Development ◽  
Weed Biomass ◽  
Water Extracts ◽  
Fresh Biomass ◽  
Dry Biomass ◽  
Medicago Sativa L

Allelopathic effects of cold water extracts of Cuscuta epithymum L. on seed germination and initial development of Medicago sativa L. varieties were investigated under laboratory conditions at the Institute of Forage Crops, Pleven, during 2016-2017. It was found that the water extracts from dry biomass of C. epithymum had a considerably stronger inhibitory effect on the studied M. sativa varieties (IR 32.7-100.0 %), as compared to the extracts of fresh biomass (IR 0.2-40.5%). Depending on the kind of C. epithymum extract (fresh or dry parasitic weed biomass), IRs for seed germination of the tested M. sativa varieties could be conventionally classified into five groups: 1) seed germination stimulation, -1.4% - extracts from fresh biomass affecting the variety ?Multifoliolate?; 2) seed germination inhibition of 0.1-10% - extracts prepared from fresh biomass affecting the varieties ?Prista 3?, ?Pleven 6?, ?Prista 5? and ?Obnova?; 3) seed germination inhibition of 11-20% - extracts from fresh biomass affecting the varieties ?Roly? and ?Victoria?; 4) seed germination inhibition of 30-45% - extracts from dry biomass affecting the variety ?Multifoliolate?; 5) seed germination inhibition of 46-60% - extracts from dry biomass affecting the varieties ?Prista 5?, ?Prista 3?, ?Victoria?, ?Roly?, ?Dara?, ?Pleven 6? and ?Obnova?. The varieties ?Victoria?, ?Prista 5? and ?Multifoliolate? of M. sativa possess some allelopathic tolerance because their germination indexes (GI) range from 80.5 to 88.7 % for the extracts prepared from fresh weed biomass of C. epithymum, and from 47.1 to 48.6% for the extracts from dry weed biomass, compared to control treatment. These varieties can be used as components in future breeding programmes.

scholarly journals Effect of salt on seed germination and plant growth of Anacardium occidentale

2021 ◽  
Vol 15 (4) ◽  
pp. 1563-1572
Author(s):  
Jacob Tchima Massai ◽  
Hamida Aminatou ◽  
Jean Boris Sounya ◽  
Dieudonné Ranava ◽  
Sebastien Vondou Vondou ◽  
...  
Keyword(s):  
Seed Germination ◽  
Salt Concentration ◽  
Inhibitory Effect ◽  
Black Soil ◽  
Cow Manure ◽  
Farming Practices ◽  
Germination Inhibition ◽  
Germination And Growth ◽  
Over Time

In Cameroon, despite the increased growing of cashew in recent years, orchard yields remain low due to the quality of seed and unsuitable peasant farming practices. This work realized in the nursery at Wakwa aimed at evaluating the effect of different concentrations of salt on cashew germination and growth. The trial was conducted during the rainy season. The substrate was made up of a mixture of sand, black soil and cow manure respectively at 1/4, 1/2 and 1/4. Seeds were soaked in different proportions of salt solution (5%, 10% and 15%) for 24 hours. The experimental design was a complete randomized block comprising four treatments, each of which was replicated three times. Treatments consisted of different percentage of salt (5%. 10% and 15%) and the control without salt (0%). Salt concentration acted in different ways on germination, survey rate and plants growth. Germination inhibition by salt changed according to the salt concentration and time, being highest at the start of experiment and decrease over time. At 28DAS, 5% and 10% concentrations did not have an inhibitory effect, which made it possible to improve survey rate at this time. Conversely, 15% had a stimulating effect on the vigor and plants growth of cashew. This study showed that soaking cashew seeds in the salt after 24 hours at different concentration does not delay germination and concentration 15% allow to obtained well growth and more vigorous plants.

Methane alleviates copper-induced seed germination inhibition and oxidative stress in Medicago sativa

BioMetals ◽  
2017 ◽  
Vol 30 (1) ◽  
pp. 97-111 ◽  
Author(s):  
Muhammad Kaleem Samma ◽  
Heng Zhou ◽  
Weiti Cui ◽  
Kaikai Zhu ◽  
Jing Zhang ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Seed Germination ◽  
Medicago Sativa ◽  
Germination Inhibition ◽  
And Oxidative Stress

scholarly journals Germination Behaviour of Pea Seeds on Municipality Sewage and Some Industrial Effluents of Biratnagar

Our Nature ◽  
1970 ◽  
Vol 1 (1) ◽  
pp. 33-36 ◽  
Author(s):  
Mohan Kumar Shrestha ◽  
Bhabindra Niroula
Keyword(s):  
Seed Germination ◽  
Industrial Effluents ◽  
Inhibitory Effect ◽  
Germination Percentage ◽  
Dairy Farming ◽  
Sewage Effluent ◽  
Germination Inhibition ◽  
Pisum Sativum L ◽  
Germination Behaviour ◽  
Pea Seeds

Municipality sewage and effluents from Dairy Farming and Shah Udyog were chosen to assess the germination activity of Pea (Pisum sativum L. var. arkel). The effluents from Municipality Sewage and Dairy Farming inhibited seed germination while Shah Udyog effluent promoted. The effluent from Municipality Sewage and Dairy Farming delayed seed germination during early hours i.e., 24 hours of sowing. The inhibition was maximum in the Municipality Sewage effluent where as the germination percentage never exceeded 48% even after 120 hours of sowing. The dilution experiment revealed that the effluent of Municipality Sewage was still inhibitory upto 25% (v/v) concentration while the inhibitory effect of Dairy Farming was overcome at 50% (v/v) concentration. The Shah Udyog effluent was safe for seed germination at all dilution. Keywords: Effluent, Seed Germination, Inhibition and Promotiondoi:10.3126/on.v1i1.302Our Nature (2003) 1: 33-36

scholarly journals Evaluation of Fungicides and Bioagents against Fusarium proliferatum under In vitro by Spore Germination Inhibition Technique

2021 ◽  
Author(s):  
Namita Soni ◽  
Kushal Raj ◽  
S. Vijaykumar
Keyword(s):  
Seed Germination ◽  
Pseudomonas Fluorescens ◽  
Spore Germination ◽  
Integrated Approach ◽  
Fusarium Proliferatum ◽  
Germination Inhibition ◽  
Seedling Vigour ◽  
Tropical Regions ◽  
Inhibition Technique

Background: Bottle gourd is a cucurbitaceous vegetable of culinary and medicinal importance cultivated in various tropical and sub-tropical regions of world. This crop is exposed to a wide variety of seed and soil mycoflora, out of which Fusarium proliferatum is utmost important as far as seed germination, viability and seedling vigour are concerned. Methods: Study was taken up to evaluate different fungicides and bioagents for their efficacy against the fungus Fusarium proliferatum under in vitro through spore germination inhibition technique. Result: Spore germination inhibition of 86.00%, 85.00% and 81.33% was recorded with hexaconazole (5% SC) @ 0.2% (C3), mancozeb (75% WP) @ 0.3% (C3) and Pseudomonas fluorescens (1% WP) @ 2% (C3), respectively. The inhibition in spore germination by mancozeb (75% WP) and Pseudomonas fluorescens (1% WP) was upto 77.33% and it was 61.78% and 67.33% in treatments involving carbendazim (50% WP) and Trichoderma harzianum (1% WP) that could be exploited to devise integrated approach for disease management.

scholarly journals The Effects of Umbel Order, Soaking, and Scarification on Germination Inhibiting Substances in Petroselinum crispum L. and Other Apiaceae Seeds

HortScience ◽  
1997 ◽  
Vol 32 (7) ◽  
pp. 1227-1230 ◽  
Author(s):  
Richard L. Hassell ◽  
Dale W. Kretchman
Keyword(s):  
Seed Germination ◽  
Lactuca Sativa ◽  
Raphanus Sativus ◽  
Apium Graveolens ◽  
Petroselinum Crispum ◽  
Germination Inhibition ◽  
Inhibitory Substance ◽  
Practical Solution ◽  
Aqueous Leachate ◽  
Radish Seed

Seed from six species of the Apiaceae and six parsley (Petroselinum crispum L.) cultivars with three seed lots of each parsley cultivar were tested for the presence of germination inhibiting substances. Aqueous leachate from seed of all six species inhibited germination of lettuce (Lactuca sativa L.) and radish (Raphanus sativus L.). Leachate from root parsley seeds (P. crispum tuberosum) were least inhibitory, while leachate from celery and celeriac (both Apium graveolens L.) seeds were most inhibitory. Inhibitory concentrations in leachate varied by seed lot within a cultivar. Aqueous leachate of seeds from the primary umbels caused less inhibition of germination than did leachate from tertiary umbels. Washing parsley seeds in aerated water for 3 hours or more removed some of the germination inhibitory substance as indicated by the germination bioassay. An aqueous extract prepared from seedcoat tissue, removed during mechanical scarification, inhibited radish seed germination; inhibition was proportional to the duration of scarification and the amount of seedcoat tissue extracted. Parsley seeds scarified ≤60 minutes germinated at rates comparable to washed seeds, but longer scarification time reduced germination. Washing seeds of Apiaceae prior to commercial drying and cleaning may be a practical solution for removal of inhibitors.

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