scholarly journals Morphometric characteristics and seed germination of Dalbergia granadillo Pittier

2021 ◽  
Author(s):  
Sergio Cruz-García ◽  
Juan Francisco Aguirre-Medina ◽  
Saúl Espinosa-Zaragoza ◽  
Jorge Reyes-Reyes ◽  
Carlos Hugo Avendaño-Arrazate ◽  
...  
Keyword(s):  
Seed Germination ◽  
Analysis Of Variance ◽  
Design Methodology ◽  
Germination Percentage ◽  
Morphometric Characteristics ◽  
Seed Length ◽  
Seed Content ◽  
Number Of Individuals ◽  
Number Of Seeds

Objective: To know the variability and quality of seed in a Dalbergia granadillo Pittier (Fabaceae) population from the Soconusco, Chiapas, Mexico. Design / methodology / approximation: The seed was obtained from six trees during the months of February and March 2020. Two weeks after the seeds were collected, pod and seed variables were determined. Seed length (LS), width (AS), color (CS), weight of 100 seeds (g) (PS) and germination percentage (PG). The results were statistically analysed by analysis of variance using the GLM procedure and the comparison of means by Tukey (P ≤ 0.05) with the SAS 9.0 program. Results: There is wide variation in seed content. The pods registered from 1, 2, 3 and up to four seeds, although pods of one predominated. There are seeds of two colours, dark brown and light brown, and the latter are the most abundant; however, light colored seeds registered higher germination (96%). The weight of 100 seeds registered values ​​of 9.6-9.7 g. Study Limitations / implications: The species has a restricted distribution and presents a low number of individuals in the evaluated populations. Findings / conclusions: The morphometric characteristics of the seeds allowed to identify the variability and quality, mainly in shape, size and coloration of the seeds, as well as the number of seeds per pod.

scholarly journals Combined Use of Two Trichoderma Strains to Promote Growth of Pakchoi (Brassica chinensis L.)

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 726
Author(s):  
Dawei Chen ◽  
Qinzheng Hou ◽  
Lingyun Jia ◽  
Kun Sun
Keyword(s):  
Seed Germination ◽  
Germination Percentage ◽  
Trichoderma Spp ◽  
Combined Use ◽  
Indol Acetic Acid ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Trichoderma Citrinoviride

Trichoderma spp., which widely exist in nature, are always used as plant growth-promoting stimulants. However, there is little reporting about the combined use of Trichoderma strains to promote growth of plants. We explored two different Trichoderma strains (Trichoderma atroviride LX-7 and Trichoderma citrinoviride HT-1) and a mixture of the two on the growth-promoting effects of pakchoi. In this study, in vitro-promoting traits of two Trichoderma strains were determined, and six treatments were used: T. atroviride LX-7, T. citrinoviride HT-1, different mixtures of these two (1:1, 1:2 and 2:1) and no inoculation in the seed germination and pot experiment. The results showed that T.atroviride LX-7 and T. citrinoviride HT-1 had the ability of siderophore and indol acetic acid (IAA) production, and LX-7 had the capacity for potassium solubilization. The highest seed germination percentage (GP), germination energy (GE), germination index (GI), vitality index (VI) and growth of radicles and plumules was observed in the LX-7 + HT-1 (1:1) combination, the highest biomass and quality of plants was observed in the LX-7 + HT-1 (1:2) inoculation (followed by a single LX-7 or HT-1 strain inoculation), while the lowest values were obtained in the untreated seeds or plants. On the basis of this study, combined use of two Trichoderma strains had greater benefits for growth and quality of pakchoi, making this formulation attractive for future field applications.

scholarly journals Perbaikan Kualitas Buah Jambu Biji (Psidium guajava L.) Kultivar Getas Merah melalui Aplikasi GA3, sebagai Upaya Meningkatkan Daya Saing Buah Lokal

2019 ◽  
Vol 9 (1) ◽  
pp. 23
Author(s):  
NI NYOMAN ARI MAYADEWI ◽  
I MADE SUKEWIJAYA
Keyword(s):  
Quality Improvement ◽  
Food Analysis ◽  
Psidium Guajava ◽  
Agricultural Technology ◽  
Guava Fruit ◽  
Seed Content ◽  
Chemical Content ◽  
Analysis Laboratory ◽  
Number Of Seeds

Quality Improvement of Guava Fruit (Psidium guajava L.) “Getas Merah” Cultivar Through GA3 Application, as an Effort to Increase Local Fruit Competitiveness. This study aimed to improve the quality of fruit of Getas Merah guava, which reduces the content of fruit seeds by giving gibberellic acids (GA3). This research was conducted in Banjar Lawak, Bilok Sidan Village, Petang District, Badung Regency from July to November 2017. The area of guava plant used by farmers with rental system. Samples taken in the field and then analyzed at the Laboratory of Agronomy and Horticulture Faculty of Agriculture Udayana University. Analysis of chemical content of fruits carried out in Food Analysis Laboratory Faculty of Agricultural Technology Udayana University. This experiment was a one-factor experiment with GA3 concentration of six levels i.e. G0 = 0 ppm, G1 = 50 ppm, G2 = 100 ppm, G3 = 150 ppm, G4 = 200 ppm and G5 = 250 ppm. Each level of treatments was repeated 5 times.  The results showed that there was a decrease of seed content in fruit of 9.24% (GA3 of 50 ppm), 13.99% (GA3 of 100 ppm), 46.33% (GA3 of 150 ppm), 48.92% (GA3 of 200 ppm), and 65.01% (GA3 of 250 ppm) when compared to controls. In this study the treatment of several levels of concentration can reduce the number of seeds, but can not make fruit without seeds.

scholarly journals Effects of Aeschynomene histrix Poir. seed treatment on germination

2021 ◽  
pp. 247-252
Author(s):  
Bignon Daniel Maxime Houndjo ◽  
Sébastien Adjolohoun ◽  
Dourossimi Adam Adenile ◽  
Marcel Houinato ◽  
Brice Augustin Sinsin
Keyword(s):  
Seed Germination ◽  
Seed Treatment ◽  
Seedling Emergence ◽  
Germination Percentage ◽  
Hot Water ◽  
Physical Dormancy ◽  
Cattle Faeces ◽  
The Subject ◽  
Number Of Seeds ◽  
Three Phases

Description of the subject. Poor germination associated with physical dormancy was experienced in the legume Aeschynomene histrix Poir. seeds and can reduce the establishment and growth of this species. Objectives. To evaluate the effects of different pre-planting treatments, including digestion by Lagune cattle or other preplanting treatments on the germinability of A. histrix seeds. Method. The experiment was divided into three phases. Firstly, six Lagune cattle (three young bulls and three heifers) were fed individually with 1,000 seeds and these seeds were subsequently collected from faeces. Secondly, seed germination was compared among seeds defecated by cattle and seeds submitted to seven other pre-planting treatments: control (intact untreated seeds); seeds scarified using sandpaper; and seeds immersed in 80 °C-hot water for 2, 4, 6, 8, and 10 min. Thirdly, we also assessed the effect of crumbling cattle faeces on A. histrix germinability. Results. The results show that Lagune cattle can disperse seeds of A. histrix with maximum recovery on the second day after ingestion. Of the number of seeds fed 13.42% were recovered. The germination percentage was greatest for sandpaper scarified seeds (96%) and seeds pre-heated during 2 min (86%), but least for digested seeds (4.27%). Breaking-down the dung doubled seedling emergence from digested seeds. Conclusions. As it is desirable to break dormancy of A. histrix seeds, the use of mechanical scarification using sandpapering or hot water scarification 80 °C at 2 min may be more beneficial than cattle digestion.

scholarly journals Physiological quality of tomato seeds treated with polymers in combination with paclobutrazol

2017 ◽  
Vol 39 (4) ◽  
pp. 338-343 ◽  
Author(s):  
Édila Maria de Rezende ◽  
João Almir Oliveira ◽  
Everson Reis Carvalho ◽  
Aline da Consolação Sampaio Clemente ◽  
Gustavo Evangelista Oliveira
Keyword(s):  
Seed Germination ◽  
Harmful Effect ◽  
Seed Storage ◽  
Cold Test ◽  
Germination Percentage ◽  
Index Test ◽  
Germination Speed ◽  
Physiological Quality ◽  
Different Doses

Abstract: In tomatoes production system, etiolation is the main cause of seedlings loss. Some inhibitors, such as paclobutrazol (PBZ), have been used to reduce this problem. This study aimed to evaluate the effect of different doses of paclobutrazol, with and without polymer association, at different degrees of permeability, on the physiological quality of seeds. Seeds of two tomato cultivars, Ozone and Paronset, were treated with four concentrations of paclobutrazol (0, 0.004, 0.008 and 0.016 g mL a.i.10 g seeds-1), and combined with three fixatives (water, P1 and P2). After the treatments, germination test, germination speed index test and cold test were carried out, and after five months of seed storage, the analyzes were repeated. The increase in PBZ dose reduces both germination percentage and germination speed index. After storage, the product acts differently on seed germination. The synthetic polymers, in the dose used in this study, are effective in PBZ fixation on the seeds coat, but do not reduce the harmful effect of PBZ on seed germination.

scholarly journals Substrate and temperature on seed germination of Aspidosperma vargasii A. DC. (Apocynaceae)

2021 ◽  
Vol 17 (5) ◽  
pp. 66-72
Author(s):  
Izabele Domingues Soares Miranda ◽  
Manoela Mendes Duarte ◽  
Rodrigo Otávio Veiga de Miranda
Keyword(s):  
Seed Germination ◽  
Moisture Content ◽  
Relative Frequency ◽  
Germination Percentage ◽  
Percentage Germination ◽  
Forest Species ◽  
Randomized Design ◽  
Mean Germination Time ◽  
Completely Randomized Design ◽  
Number Of Seeds

The Amazon has a wide diversity, including forest species with timber and non-timber potential, which often have their use restricted due to a lack of silvicultural information. Thus, the present study aimed to evaluate the effect of substrates and temperatures on seed germination of Aspidosperma vagarsii. Therefore, the premise of a completely randomized design was followed, in a 3 x 3 factorial scheme, with three substrates (paper, sand and vermiculite) and three temperatures (20, 25 and 30 °C). The germination percentage, germination speed index and mean germination time were determined, as well as germination relative frequency graphs. In addition, the weight of a thousand seeds, the number of seeds per kilo, and the moisture content was determined. The weight of thousand seeds was equal to 276.4 g, with 3,618 seeds per kilo, and a moisture content of 9.5%. There was no interaction between the studied factors. The sand substrate and temperatures of 20 and 25 °C presented the best results for seed germination of A. vargasii.

scholarly journals Evaluation of pre-germination treatments in Carapa guianensis AUBL

2020 ◽  
Vol 37 (2) ◽  
Author(s):  
Pedro Pablo Bacca ◽  
Jhon Jairo Zuluaga ◽  
José Ives Pérez ◽  
Diana Lucía Burbano ◽  
Manfred Ricardo Palacio
Keyword(s):  
Seed Germination ◽  
Forest Products ◽  
Germination Percentage ◽  
Native Forest ◽  
Carapa Guianensis ◽  
Multiple Comparison Test ◽  
Mean Germination Time ◽  
Sexual Propagation ◽  
Ecosystem Regeneration

Understanding seed germination of native forest species of the Tropical wet forest is essential for ecosystem regeneration and conservation, which have been affected by the exploitation of wood and non-wood forest products. Carapa guianensis Aulb. (Meliaceae) has been exploited due to the high quality of its wood and seeds. Particularly, the latter is a source of a medicinal oil of high value to the pharmaceutical industry. The indiscriminate use of this species has reduced its population size; therefore, scientific knowledge of its sexual propagation in nurseries is vital. This research aimed to evaluate seed germination of C. guianensis under different pre-germination treatments and substrates at the Centro de Investigación El Mira of AGROSAVIA. Pre-germination assays were conducted in a split-plot design with a random distribution of four repetitions. The cumulative germination percentage (CGP) and mean germination time (t50) were calculated and analyzed through an ANOVA, and Tukey’s multiple comparison test using InfoStat V.2016. Significant differences for CGP among treatments (p<0.0001) and interactions (p<0.0096) were found. The highest germination percentage (61%) was achieved in S1+T4; however, the T50 did not show significant differences (p=0.24). This research demonstrates that the highest germination percentage is achieved through a scarification treatment with imbibition in sand substrate under the agroclimatic conditions of Tumaco.

scholarly journals Effect of pre-sowing treatment on seed germination of Ixora coccinea L.

2017 ◽  
Vol 8 ◽  
Author(s):  
Amruta Shivajirao Shinde ◽  
Niranjana Sunil Chavan
Keyword(s):  
Water Treatment ◽  
Seed Germination ◽  
Analysis Of Variance ◽  
Cold Water ◽  
Germination Percentage ◽  
Hot Water ◽  
Hot Water Treatment ◽  
Significant Difference ◽  
Coastal Plant ◽  
Ixora Coccinea

<p><em>Ixora coccinea</em> L. is ornamentally and medicinally important coastal plant also associated with mangroves of Sindhudurg and Ratnagiri district. In present study seeds of <em>I. coccinea</em> were treated with cold water, 50°C  hot water, germinator solution and also 100 ppm, 200 ppm, 500 ppm GA. Germination percentage were measured every day until no germination were observed. Data was analysed using analysis of variance (ANOVA) and significant mean difference in pair of treatments was analysed by using t-Test. Seeds of <em>I. coccinea </em>treated with 100 ppm GA showed highest germination percentage i.e. 90% followed by hot water treated seeds and it  showed 85%  germination.<em> </em>Seeds were treated with GA, Hot water, Germinator, soaking in cold water showed significant difference in between treatments ( p&lt;0.05). Overall results suggest that 100 ppm GA and hot water treatment used for enhance the germination of <em>I. coccinea</em> seeds.</p>

scholarly journals Leaf Extracts Silver Nanoparticles of Four Medicinally Important Plants: Used as a Green Manure

2020 ◽  
pp. 1-8
Author(s):  
Sk Md Abu Imam Saadi ◽  
Amal Kumar Mondal
Keyword(s):  
Silver Nanoparticles ◽  
Seed Germination ◽  
Germination Rate ◽  
Germination Percentage ◽  
Biomedical Science ◽  
Leaf Extracts ◽  
Plant Samples ◽  
Indigenous Plant ◽  
Average Size

Now a day’s green synthesis of silver nanoparticles (AgNPs) from plants has an important role in biomedical science, drug discovery and also in biological field. In this investigation, we synthesize AgNPs using the aqueous solution of the leaf extract of 4 indigenous plant samples such as –Abroma augusta, Barringtonia acutangula, Dillenia indica & Eupatorium odoratum in room temperature (35±2°C). After that, formation of AgNPs were confirmed by UV-VIS spectrum, the answered (435, 445, 430 & 440 nm), respectively. The average size of the AgNPs also confirmed by Particle size analyser (PAS), the B. acutangular species showed the best quality of silver nanoparticles among the other plant extracts. FTIR analysis showed that five biomolecule groups like phenols, aromatic, alkyne, alkane and alkene were found in among these plant samples. Our findings suggest that the seed germination percentage, relative seed germination rate, relative shoot & root growth and germination index of the tested plant depends upon concentration gradient of synthesize AgNPs. At 0.6 mg/ml concentration, the tested plant samples give the best favorable growth condition.

scholarly journals Seed Germination of Faidherbia albida (Delile) A. Chev as Influenced by Different Pretreatments

2021 ◽  
Vol 25 (7) ◽  
pp. 1305-1309
Author(s):  
O.A. Iroko ◽  
I.L. Sowunmi ◽  
J.M. Ajekiigbe ◽  
S.O. Rufiai ◽  
W.T. Wahab
Keyword(s):  
Seed Germination ◽  
Analysis Of Variance ◽  
Seed Coat ◽  
Cold Water ◽  
Germination Percentage ◽  
Hot Water ◽  
Faidherbia Albida ◽  
Significant Difference ◽  
Germination Value ◽  
All Treatment

Faidherbia albida is an agroforesrty tree that has the potential of promoting agroforestry establishment in Nigeria. The seeds are glossy due to the presence of wax in the seed coat which prevents easy penetration of water. Thus, this study assessed the effect of different pretreatments (biological, mechanical and chemical) on the germination of F. albida seeds. The treatments include; seeds scarified at the helium, soaked in cold water for 24 hours, soaked in hot water for 3 minutes, 5 minutes, 10 minutes, & 15 minutes and soaked in Conc. H2SO4 for 3 minutes, 5 minutes, 10 minutes, and 15 minutes. The result showed that all treatment had uniform germination percentage of 100% but seeds soaked in H2SO4 for 15 min and 10 min had the highest germination value of (65.25) and (65.00) respectively, followed by 15mins soaking in hot water (47.14) while the least germination value was recorded in seeds scarified mechanically (33.31). Analysis of variance revealed that there was no significant difference in the treatments. However, seeds treated with H2SO4 at 15 mins and 10 mins had the best performance in terms of germination value compared with other treatments. Therefore, for optimum and uniform germination, the seed of F. albida seeds should be soak in concentrated H2SO4 for 15 min.

scholarly journals Effect of Foliar Application of Micronutrients on Plant Growth and Seed Germination of Four Okra Cultivars

2016 ◽  
Vol 44 (1) ◽  
pp. 257-263
Author(s):  
Ghadir MOHAMMADI ◽  
Ebrahim M. KHAH ◽  
Spyridon Alexandros PETROPOULOS ◽  
Dimosthenis B. CHACHALIS
Keyword(s):  
Seed Germination ◽  
Moisture Content ◽  
Plant Height ◽  
Seed Quality ◽  
Foliar Application ◽  
Germination Percentage ◽  
Plant Parts ◽  
Hard Seeds ◽  
Pod Length ◽  
Number Of Seeds

In the present study, the effect of foliar application of micronutrient fertilizers on okra plants was examined. Four okra cultivars (‘Boyiatiou’, ‘Veloudo’, ‘Clemson’ and ‘Pylaias’) were sprayed weekly throughout the duration of the cultivation with two commercial micronutrient fertilizers (F1 and F2) [e.g. M1= control (0 ml); M2= 40 ml (20 ml of each fertilizer); M3 = 80 ml (40 ml of each fertilizer). From the results of the present study, it was observed that plant height of ‘Boyiatiou’ and ‘Pylaias’ was increased by application of M2 whereas plant height of ‘Clemson’ and ‘Veloudo’ was either unaffected or reduced. Flower induction increased at both micronutrient levels (M2 and M3) only in ‘Pylaias’. Pod set was higher in treatment M3 in ‘Veloudo’ and ‘Pylaias’ and resulted in higher seed yield.  Pod length and diameter were not affected by micronutrient application, as well as 100-seed mean weight and moisture content; however the number of seeds per pod in ‘Pylaias’ was significantly lower in M2 and M3 than in M1, whereas the percent seed germination of all cultivars was higher following micronutrient application. Germination differed between the control and the micronutrient treatments at all times of harvest and plant parts. In conclusion, the main value of foliar application of micronutrients was to increase germination percentage and reduce hardseedness, especially for cv. ‘Veloudo’, since the occurrence of hard seeds in susceptible cultivars reduces germination, and therefore seed quality. In some cultivars (‘Pylaias’ and ‘Veloudo’ here) micronutrients may also increase seed yield by increasing pod set.

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