scholarly journals Germination and Morphology of Sophora secundiflora Seeds Following Scarification

HortScience ◽  
1991 ◽  
Vol 26 (3) ◽  
pp. 256-257 ◽  
Author(s):  
John M. Ruter ◽  
Dewayne L. Ingram
Keyword(s):  
Sulfuric Acid ◽  
Room Temperature ◽  
Germination Rate ◽  
Hot Water ◽  
Scanning Electron Micrographs ◽  
Acid Pretreatment ◽  
Pretreatment Time ◽  
Concentrated Sulfuric Acid ◽  
One Year ◽  
Scanning Electron

Seeds of Sophora secundiflora (Ort.) Lag ex. DC. (mescal bean) were scarified with hot water or concentrated sulfuric acid to determine an optimal pretreatment for successful germination. Scanning electron micrographs indicated that the acid scarification treatment removed the seed cuticle. One-year-old seeds were successfully stored and germinated ≈2 days sooner than from the current year if both were given an acid pretreatment. Germination rate increased as acid pretreatment time increased from 30 to 120 minutes. Soaking seeds in water at room temperature or in hot water (initially 93C) for 24 hours had no effect on germination.

Response of Flamboyant seeds (Delonix regia) subjected to different dormancy overcoming methods

2021 ◽  
Vol 14 (3) ◽  
pp. 1-4
Author(s):  
R. R. Rocha ◽  
C. G. B. G. D. Mariussi ◽  
S. N. Silva ◽  
R. Noetzold
Keyword(s):  
Sulfuric Acid ◽  
Experimental Design ◽  
Efficient Method ◽  
Root Length ◽  
Germination Rate ◽  
Hot Water ◽  
The Other ◽  
Seedling Height ◽  
Significant Difference ◽  
Concentrated Sulfuric Acid

Flamboyant has great ornamental use, because it has beautiful flowers, having a great use in urban afforestation and park ornamentation. The seeds have a low germination rate because they have dormancy caused by the impermeability of the integument. In this sense, the objective was to determine the most efficient method to overcome dormancy in flamboyant seeds. The experimental design was fully randomized with 4 treatments and 3 replications. The treatments consisted of: 1-Witness (non-scarified seeds); 2- Hot water at 90º C for 5 minutes; 3- Concentrated sulfuric acid 98% for 60 minutes; 4- Mechanical scarification with sandpaper number 80. The characteristics evaluated were: emergency, emergency speed index, seedling height and root length. A significant difference can be observed in the treatments evaluated only for the emergency speed index where the scarification treatment with sandpaper was higher than the others, for the other characteristics evaluated there was no difference

scholarly journals Effects of Different Seeds Pretreatments on the Germination of Five Local Trees: Four From The Fabaceae Family and One From the Bombacacea

2021 ◽  
Vol 17 (43) ◽  
pp. 89
Author(s):  
Yélemou Barthelemy ◽  
Tyano Abdoulaye ◽  
Koala Jonas ◽  
Zongo Rebecca Rebecca
Keyword(s):  
Sulfuric Acid ◽  
Germination Rate ◽  
Hot Water ◽  
Acacia Nilotica ◽  
Tamarindus Indica ◽  
Parkia Biglobosa ◽  
Adansonia Digitata ◽  
Acid Pretreatment ◽  
Pre Treatment ◽  
Piliostigma Reticulatum

The problem of the effectiveness of the established pre-treatments of seeds of local tree species is posed more and more often, with acuity. It appears necessary that studies are led to explore new methods of pre-treatment, or to update the old instructions applied, for a better success and at lower cost, of the production of seedlings. The present study concerned five species: Acacia nilotica, Adansonia digitata, Parkia biglobosa, Piliostigma reticulatum and Tamarindus indica. The methodology involved subjecting the seeds to three different pretreatments: (i) seeds treated with sulfuric acid (T0), (ii) seeds soaked in hot water for 24 hours (T1), (iii) seeds soaked in hot water for 48 hours (T2). For Acacia nilotica seeds, the different pretreatments did not result in statistically different germination rates. The germination rates are 77%, 65% and 62% (respectively for soaking in hot water for 48 hours, sulfuric acid and soaking in hot water for 24 hours). The different pretreatments also do not result in different germination rates for Tamarindus indica. Indeed, the germination rates after 30 days for this species are good but statistically identical (85% for the pretreatment with sulfuric acid and hot water for 24 hours). For Adansonia digitata, Parkia biglobosa and Piliostigma reticulatum, the sulfuric acid pretreatment gave the best germination rate (49%, 54% and 41% respectively). The results of this study may have practical consequences in terms of management of the different species studied. They show that immersing in boiling water and left for 24 hours and 48 hours yields fairly satisfactory germination rates for Acacia nilotica and Tamarindus indica seeds. These inexpensive techniques, accessible to all, can be considered as means to easily produce seedlings of these species.

scholarly journals Effect of Seed Scarification and Gibberellic Acid Treatment on Seedling Emergence of Sky-Blue Lupine (Lupinus diffusus)

2003 ◽  
Vol 21 (2) ◽  
pp. 64-67
Author(s):  
Bijan Dehgan ◽  
Jeffrey G Norcini ◽  
Steven M. Kabat ◽  
Hector E. Pérez
Keyword(s):  
Gibberellic Acid ◽  
Acid Treatment ◽  
Room Temperature ◽  
Seedling Emergence ◽  
Hot Water ◽  
Severely Injured ◽  
Viable Seed ◽  
Seed Scarification ◽  
Concentrated Sulfuric Acid ◽  
Gibberellic Acid Treatment

Abstract The efficacy of various scarification treatments and gibberellic acid (GA3) treatment on seedling emergence of Lupinus diffusus Nutt. (sky-blue lupine) was evaluated. Seed scarified in concentrated sulfuric acid for 90 min followed by immersion in water for 24 hr resulted in the best emergence of viable seed (≈ 41%). Mechanical scarification with sandpaper for up to 30 min did not improve seedling emergence. Immersing seed in 90C (194F) water which was then allowed to cool for 24 hr apparently killed or severely injured the embryos as no seedlings emerged from seeds treated with hot water. There was only 5% seedling emergence for nonscarified seed that were soaked in water at room temperature for 24 hr. Emergence was not improved by soaking scarified seed in 1000 mg/liter (ppm) GA3 for 24 hr prior to sowing the seeds.

scholarly journals Methods of overcoming dormancy in seeds and initial development of Black Wattle

2020 ◽  
Vol 42 ◽  
pp. e44
Author(s):  
Ricardo Alberti ◽  
Fernanda Lais Novello ◽  
Eduardo Alexandre Albarello ◽  
Ewerton Jose de Medeiros Torres ◽  
Fernando De Jesus Moreira Junior
Keyword(s):  
Sulfuric Acid ◽  
Aerial Part ◽  
Hot Water ◽  
Forest Nursery ◽  
Acacia Mearnsii ◽  
Initial Development ◽  
Efficient Treatment ◽  
Running Water ◽  
Concentrated Sulfuric Acid ◽  
Black Wattle

The objective of this work was to analyze the efficacy of different methods of dormancy break in seeds of Acacia mearnsii De Wild. The work was performed at the UFSM Botany Lab and Forest Nursery, in Frederico Westphalen, RS. The treatments were: (T1) control; (T2) immersion in hot water (90 °C) for 5 minutes, followed by rest; (T3) immersion in hot water (90 °C) for 10 minutes, followed by rest; (T4) chemical scarification with concentrated sulfuric acid for 3 minutes, followed by washing under running water; (T5) chiseling with concentrated sulfuric acid for 5 minutes, followed by washing under running water. The seeds were sown in plastic trays with Oxisol and vermiculite. The results were submitted to analysis of variance and data were differentiated by Test t with 5% of probability. The most efficient treatment to overcome dormancy was T2, presenting 81.29% of germinated seeds and IVG of 18.23 days for germination. This treatment was also the best for the variables of physical vigor and best performing root length and aerial part, and did not differ from improved treatments for diameter and green mass weight.

scholarly journals Difference in germination rate of Baobab (Adansonia digitata L.) provenances contrasting in their seed morphometrics when pretreated with concentrated sulfuric acid

2015 ◽  
Vol 10 (12) ◽  
pp. 1412-1420 ◽  
Author(s):  
Diouf Macoumba ◽  
Arona Ndiaye Samba Samba ◽  
Arona Ndiaye Samba Samba ◽  
Ndoye Ousmane ◽  
Van Damme Patrick
Keyword(s):  
Sulfuric Acid ◽  
Germination Rate ◽  
Adansonia Digitata ◽  
Concentrated Sulfuric Acid

Enhancement of CO2 Capture Using CuO Nanoparticles Supported on Green Activated Carbon

2015 ◽  
Vol 1087 ◽  
pp. 111-115 ◽  
Author(s):  
Wan Nor Roslam Wan Isahak ◽  
Zatil Amali Che Ramli ◽  
Azizul Hakim Lahuri ◽  
Muhammad Rahimi Yusop ◽  
Mohamed Wahab Mohamed Hisham ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Sulfuric Acid ◽  
Composite Materials ◽  
Room Temperature ◽  
Total Surface Area ◽  
Cuo Nanoparticles ◽  
Concentrated Sulfuric Acid ◽  
Adsorption Capability ◽  
Hydroxide Phase ◽  
Selection Of

At room temperature, dehydrating agent, concentrated sulfuric acid (H2SO4) was used to form porous carbon (BAC) from bamboo waste shows good properties as CO2 adsorbent. Selection of nano-CuO supported BAC produce composite materials with high total surface area and smaller pores size composite of 660.8 cm2/g and 2.7 nm. XRD data showed the support data to confirm the hydroxide phase formation as intermediate for carbonate and accelerate the CO2 chemisorption reaction. Besides, the presence of BAC together with metal oxide can improve the CO2 interaction physically on the surface and pores resulting the higher adsorption capability of 32.2 cm3 of CO2 per gram adsorbent. The combination of nano-CuO on BAC become a good adsorbent which can stimulate the CO2 reduction programme as well as reduce the CO2 emissions during BAC production.

scholarly journals Seed Germination of Cyeas revoluta

1987 ◽  
Vol 5 (3) ◽  
pp. 105-106 ◽  
Author(s):  
John J. Frett
Keyword(s):  
Sulfuric Acid ◽  
Seed Germination ◽  
Gibberellic Acid ◽  
Room Temperature ◽  
Seed Treatments ◽  
Percent Germination ◽  
Concentrated Sulfuric Acid ◽  
Cycas Revoluta

Cycas revoluta seeds commonly take from a few months to a year or more to germinate and germination percentages are normally quite low. In an effort to improve germination, several seed treatments were tested. Seeds germinated better in dark than in the light. Removal of the pulp from seeds increased percent germination as compared to seeds with the pulp intact. Treatment of seeds or 0.5, 1.0, 1.5 or 2 hr with concentrated sulfuric acid increased seed germination. The application of gibberellic acid at concentrations of 500, 1000 or 5000 ppm did not affect germination as compared to controls. Seeds stored at room temperature for 6 months germinated more readily than seeds planted immediately. It is suggested that seeds stored at room temperature and scarified with concentrated sulfuric acid for 1 hr will exhibit improved germination.

Magnetic and Magnetoelectric Studies in Polycrystalline LaBi4FeTi3O15

1997 ◽  
Vol 11 (14) ◽  
pp. 633-644 ◽  
Author(s):  
A. R. James ◽  
G. S. Kumar ◽  
Mahendra Kumar ◽  
S. V. Suryanarayana ◽  
T. Bhimasankaram
Keyword(s):  
Physical Properties ◽  
Electron Micrographs ◽  
Room Temperature ◽  
Cold Isostatic Pressing ◽  
Scanning Electron Micrographs ◽  
Orthorhombic Distortion ◽  
Magnetization Measurements ◽  
Isostatic Pressing ◽  
Scanning Electron

LaBi4FeTi3O15 is a 4-layered ferroelectromagnetic material belonging to the Aurivillius' family of compounds having an orthorhombic distortion. Polycrystalline samples of this compound were prepared by uniaxial pressing and cold isostatic pressing with a view to study the effect of different compaction techniques and its impact on the physical properties. The scanning electron micrographs of the samples showed differences in microstructures. Magnetization measurements were carried out from 80 K to room temperature and B–H loop traces indicated a small hysteresis around the origin. Dc magnetoelectric studies were performed and outputs of 2.52 mV/cm/Oe and 2.49 mV/cm/Oe respectively were obtained for the unixially and isostatically pressed samples.

scholarly journals Morphometric Characterization and Seed Dormancy Overcoming of Sapindus saponaria L.

2018 ◽  
Vol 10 (7) ◽  
pp. 329 ◽  
Author(s):  
Maria Inajal R. S. das Neves ◽  
João C. de Araújo Neto ◽  
Vilma M. Ferreira ◽  
Clissia B. da Silva ◽  
João L. A. Melo Júnior ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Sulfuric Acid ◽  
Room Temperature ◽  
Oil Content ◽  
Unsaturated Fatty Acids ◽  
Hot Water ◽  
Marginal Areas ◽  
Randomized Design ◽  
Sapindus Saponaria ◽  
Ecological Importance

S. saponaria L. is a Brazilian native arboreal species, with relevant ecological importance in the recovery of degraded and marginal areas. The objectives of the present study were to characterize morphometrically Sapindus saponaria L. seeds, to extract and to quantify oil content, establish the percent composition of fatty acids; to describe their different post-seminal stages; to describe the different post-seminal stages, as well as to evaluate the germinative performance of the seeds as a function of different treatments to overcome dormancy. Seeds were evaluated as to water content and biometric length and width. The extraction and quantification of the seed oil was obtained by the solvent extraction method using the Soxhlet extractor system. Regarding the post-seminal development, some processes triggered during growth and development of the seedlings were evaluated. The treatments for dormancy overcoming were: mechanical scarification, chemical scarification with sulfuric acid for 5, 10, 20, 30 and 40 minutes, immersion in hot water (80 ºC) until reaching room temperature, immersion in distilled water at room temperature for 24 hours and intact seeds (control). The seeds were evaluated for germination, velocity, medium time, synchrony and germination uncertainty. The design was a completely randomized design with four replicates of 25 seeds per treatment. The seeds present on average 10.3 mm in length and 10.2 mm in width with hygene-cryptocoledonar germination. The oil content found in the seeds was 7.25%, most of which was composed of unsaturated fatty acids (78.9%). The highest values of germination occur when the seeds are immersed in sulfuric acid for 30 minutes.

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