scholarly journals Germination test of Eucalyptus phaeotricha seeds

2018 ◽  
Vol 22 (9) ◽  
pp. 653-657 ◽  
Author(s):  
Carlos E. Affonso ◽  
Givanildo Z. da Silva ◽  
Tatiane S. Jeromini ◽  
Cibele C. Martins
Keyword(s):  
Dry Weight ◽  
Water Volume ◽  
Conduction Time ◽  
Germination Test ◽  
Randomized Design ◽  
Temperature Regimes ◽  
Seed Analysis ◽  
Completely Randomized Design ◽  
Mean Time ◽  
Temperature Conduction

ABSTRACT The rules for seed analysis do not have recommendations for conducting the germination test of Eucalyptus phaeotricha seeds. Thus, the aim of this study was to determine the best substrate, temperature, conduction time, and substrate moistening level for the germination test of E. phaeotricha seeds. First count of germination, germination, germination speed index and mean time of germination were evaluated. The first experiment was carried out in a completely randomized design, in a factorial scheme (6 x 2), corresponding to six temperature regimes (15, 20, 25, 30, 35 °C and 20-30 °C) and two substrates (paper and sand) with four replicates, and the means were compared by Tukey test at 0.05 probability level. In the second experiment, the germination test was installed with the most favorable substrate and temperature identified in the previous step, evaluating substrate moistening levels equivalent to 1.0, 1.5, 2.0, 2.5 and 3.0 times the dry weight of the substrate; due to the quantitative nature of the treatments, the data were subjected to regression analysis and curve fitting. The germination test of E. phaeotricha seeds should be conducted at 30 °C on paper, moistened with a water volume of 2.2 times the dry weight of the paper, with initial and final counts at 6 and 14 days after sowing, respectively.

scholarly journals Envelope method for the germination test of Mombasa grass

2021 ◽  
pp. 2041-2048
Author(s):  
Tatiane Sanches Jeromini ◽  
◽  
Murilo Petrassi Botassini ◽  
Renato Téo de Barros ◽  
Cibele Chalita Martins ◽  
...  
Keyword(s):  
Traditional Method ◽  
Seed Quality ◽  
Quality Analysis ◽  
Germination Test ◽  
High Quality ◽  
Significant Treatment ◽  
Randomized Design ◽  
Seed Analysis ◽  
Envelope Method ◽  
Completely Randomized Design

The Rules for Seed Analysis reports the use of a paper envelope to allow use of the germination test with small seeds but does not provide any method or use recommendation. As Mombasa grass has high quality and commercial importance, the objective of this study was to evaluate the viability of the envelope method in the germination test of Mombasa grass seeds, with the aim of achieving greater result accuracy and improvement of seed quality analysis processes in laboratories. The germination of eight lots of Mombasa grass seeds was evaluated with two sowing methods (on paper and in paper envelope). The moisture content and the first germination count were also determined. The experiment was conducted with a completely randomized design. The data were analyzed in a 2 x 8 factor scheme (sowing methods x lots), with four repetitions. The data were subjected to analysis of variance using the F test and when significant, treatment means were compared using the Tukey’s test at 5% probability. Results showed that the envelope method is efficient for the germination test of Mombasa grass seeds and can be easily used by seed analysis laboratories, as it present results equivalent or superior to those obtained using the traditional method on paper, while occupying only 2/5 of the germination chamber space used in the conventional method.

scholarly journals Production of Brachiaria decumbens Grass at Various Levels of Drought Stress Treatment

2018 ◽  
Vol 5 (3) ◽  
Author(s):  
A F A Putra ◽  
N D Hanafi ◽  
Hamdan ◽  
M Tafsin ◽  
R E Mirwandhono
Keyword(s):  
Drought Stress ◽  
Plant Height ◽  
Field Capacity ◽  
Dry Weight ◽  
Water Volume ◽  
Fresh Weight ◽  
Brachiaria Decumbens ◽  
Stress Treatment ◽  
Randomized Design ◽  
Completely Randomized Design

This study aims to determine effects of production of Brachiaria decumbens grass on different drought stress treatments. Research was conducted at the Greenhouse Faculty of Agriculture University of North Sumatera from Desember 2016 until April 2017. The design used was Completely Randomized Design (CRD), with three treatments and seven replications. The treatment consisted of three levels of drought stress which were control (100% field capacity=fc), medium drought stress (25% fc), and heavy drought stress (50% fc). The variable were fresh weight production, dry weight production and plant height. The results showed that drought stress treatment control (100% fc) significantly (P<0,05) affect fresh weight production, dry weight production, but not plant height. It is concluded that increasing water volume of field capacity increase production Brachiaria decumbens grass.

scholarly journals Standard germination test in physic nut (Jatropha curcas L.) seeds

2014 ◽  
Vol 36 (3) ◽  
pp. 336-343 ◽  
Author(s):  
Glauter Lima Oliveira ◽  
Denise Cunha Fernandes dos Santos Dias ◽  
Paulo Cesar Hilst ◽  
Laércio Junio da Silva ◽  
Luiz Antônio dos Santos Dias
Keyword(s):  
Water Volume ◽  
Physic Nut ◽  
Germination Test ◽  
Seed Testing ◽  
Paper Towel ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Water Holding ◽  
The Ideal

Defining adequate methods to assess seed germination is important to control the quality of commercial lots, especially for species that are not yet included in the Rules for Seed Testing. This study aimed to establish an adequate procedure for germination test in physic nut seeds (J. curcas L.). Three seed lots, in eight replications of 25 seeds each, were sown on paper towel rolls moistened with a water volume equivalent to 2.7 the weight of the dry paper and in sterilized sand moistened up to 60% of its water-holding capacity. The seeds of each treatment were maintained on germination chambers at temperatures of 20, 25, 30 and 20-30 ºC. Daily counts were made to define the ideal date to perform the first and the last count test. Criteria for classifying seedlings as normal and abnormal were also established. The experiment was conducted in a completely randomized design in a split plot arrangement, and the means were compared by Tukey's test (P<0.05). For maximum germination potential of physic nut seeds, the germination test should be conducted at 25 ºC and 30 ºC, using sand or paper towel as a substrate, with the counts at 7 and 12 days after sowing.

scholarly journals Aspectos germinativos de cultivares de girassol armazenadas submetidos a estresse térmico

2015 ◽  
Vol 10 (3) ◽  
pp. 95
Author(s):  
Renato Costa Nunes Leandro ◽  
Alexandre Bosco de Oliveira ◽  
Tatiana Maria da Silva ◽  
André Luís da Silva Parente Nogueira ◽  
Maria Neurilan Costa Silva
Keyword(s):  
Heat Stress ◽  
Germination Percentage ◽  
Sunflower Seeds ◽  
Randomized Design ◽  
Temperature Regimes ◽  
Seed Analysis ◽  
Physiological Quality ◽  
Analysis Laboratory ◽  
Completely Randomized Design ◽  
The One

<p>Objetivou-se avaliar a germinação de sementes de diferentes cultivares de girassol armazenadas sob condições de estresse térmico. O trabalho foi desenvolvido no Laboratório de Análise de Sementes do Departamento de Fitotecnia da Universidade Federal do Ceará (UFC), em Fortaleza - CE. Para a avaliação da influência da temperatura o experimento foi disposto em delineamento inteiramente casualizado em esquema fatorial (20 x 5), sendo vinte cultivares de girassol e cinco regimes de temperaturas (25,0; 27,5; 30,0; 32,5 e 35,0º C) e, respectivamente, conduzido quatro repetições. Foram avaliadas as seguintes variáveis: média da matéria fresca por plântula; média da matéria seca por plântula tempo médio de germinação; índice de velocidade de germinação; porcentagem de germinação. Os resultados foram comparados entre si pelo teste de Skott-Knott a 5% de probabilidade. A avaliação de estresse térmico promovido nas sementes de girassol, permitiram discriminar o híbrido Olissun como o que apresentou as melhores características em termos de qualidade fisiológica para superação de estresse térmico em comparação aos demais cultivares avaliados. </p><p align="center"><strong><em>Germinal aspects of stored sunflower cultivars subjected to heat stress</em></strong></p><p><strong>Abstract: </strong>This study aimed to evaluate the germination of seeds of different cultivars of sunflower under conditions of heat stress. The study was conducted in the Plant Science Department of the Seed Analysis Laboratory of the Federal University of Ceará (UFC) in Fortaleza-CE. For the evaluation of the influence of temperature, the experiment was arranged in a completely randomized design in a factorial design (20 x 5), and twenty varieties of sunflower five temperature regimes (25.0, 27.5, 30.0, 32.5 and 35,0º C) and, respectively, conducted four replications. The following variables were evaluated: mean fresh weight per plant; average dry matter per plant average time of germination; germination speed index; germination percentage. The results were compared by Skott-Knott test at 5% probability. The evaluation of thermal stress caused in sunflower seeds, allowed to discriminate the hybrid Olissun as the one with the best characteristics in terms of physiological quality to overcome heat stress compared to other cultivars evaluated.</p>

Effect of planting date and density on calendula and peppermint herbs

2014 ◽  
Vol 1 (1) ◽  
pp. 25-29
Author(s):  
Rahim Mohammadian ◽  
Behnam Tahmasebpour ◽  
Peyvand Samimifar
Keyword(s):  
Mutual Effect ◽  
Dry Weight ◽  
Planting Date ◽  
Mass Reduction ◽  
Flower Number ◽  
Planting Dates ◽  
Randomized Design ◽  
Significant Difference ◽  
Completely Randomized Design ◽  
Total Maximum

A factorial experiment was conducted with a completely randomized design to evaluate the effects of planting date and density on calendula herbs and peppermint. It had 3 replicates and was done in Khosroshahr research farm, Tabriz in 2006. Under studied factors were: 3 planting dates (10 May, 25 May and 10 June) in 4 densities (25, 35, 45, 55) of the plant in square meters. The results of variance a nalysis showed that there was 1% probability significant difference between the effects of planting date and bush density on the leave number, bush height and the bush dry weight. But the mutual effect of the plant date in mentioned traits density was insignificant. Regarding the traits mean comparison, the total maximum dry weight was about the 55 bush density in mm. Also, the bush high density in mm causes the bush growth and its mass reduction. When there is the density grain, the flower number will increase due to bush grain in surface unit. Overall, we can conclude that 10 June planting and 45 bush density in mm is the most suitable items and results in favored production with high essence for these crops.

Respon Akar Bibit Aren Genjah (Arenga pinnata) Di Pembibitan Pada Pemberian Dosis dan Interval Pupuk Organik Cair Nasa

2018 ◽  
Vol 7 (1) ◽  
pp. 28
Author(s):  
Yetti Elidar
Keyword(s):  
Organic Fertilizer ◽  
Dry Weight ◽  
Treatment Combination ◽  
Root Dry Weight ◽  
Randomized Design ◽  
Dose Study ◽  
Palm Sugar ◽  
Wet Weight ◽  
Completely Randomized Design ◽  
Leaf Dry Weight

Research on the response of roots of palm sugar palm seeds (Arenga pinnata) in nurseries at doses and intervals of Nasa liquid organic fertilizer. Aims to determine the dosage, interval and combination of dosages and fertilization intervals with Nasa liquid organic fertilizer which can provide the best dry weight of the roots in the nursery. The research design used was a Completely Randomized Design (CRD) with 3x3 factorial experiments and each treatment was repeated 8 (eight) times, consisting of: the first factor was the treatment of POC Nasa dose in a concentration of 3 cc POC Nasa per liter of water (D) consists of 3 levels, namely: d1 = 300 ml POC Nasa, d2 = 400 ml POC Nasa, d3 = 500 ml POC Nasa, while the second factor is the treatment of POC Nasa Interval (I) consisting of 3 levels, namely: i1 = 2 once a week, i2 = once every 3 weeks, i3 = once every 4 weeks. The results of the POC Nasa dose study had a significant effect on leaf wet weight, leaf dry weight, root wet weight and root dry weight. The best dose at this level are: d2 (400 ml of Nasa liquid organic fertilizer), the interval of liquid organic fertilizer Nasa has a significant effect on leaf wet weight, leaf dry weight, root wet weight and root dry weight. The best dose at this level is: i1 (once every 2 weeks). The treatment combination has no significant effect on all parameters. 

scholarly journals Perlakuan Berbagai Dosis Pupuk ZA Pertumbuhan Dan Hasil Tanaman Bayam Merah (Amaranthus gangeticus)

2021 ◽  
Vol 5 (2) ◽  
pp. 180
Author(s):  
Edy Kustiani ◽  
Mariyono Mariyono ◽  
Bela Citra Ayuningtyas
Keyword(s):  
Analysis Of Variance ◽  
Nutritional Value ◽  
Environmental Design ◽  
Dry Weight ◽  
Growth And Yield ◽  
Dose Treatment ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
The Ideal

Red spinach (Amaranthus gangeticus) is one of the most popular vegetables because of its high nutritional value and easy cultivation. Efforts to increase the production of red spinach are to fertilize to meet the needs of both macro and micronutrients. This study aimed to determine the effect of ZA fertilizer dose on the growth and yield of red spinach. The environmental design used was a non-factorial, completely randomized design with four replications. The factors tested were the dose of ZA fertilizer which consisted of 6 levels, namely: without ZA fertilizer (D0); 0.4 gr/polybag (D1); 0.8 gr/polybag (D2); 1.2 gr/polybag (D3); 1.6 gr/polybag (D4); 2 gr/polybag (D5). The data obtained were analyzed using analysis of variance, and if the results were significantly different, the BNT test was continued at a 5% level. The growth and yield of red spinach showed significant differences due to the ZA fertilizer dose treatment. The ZA fertilizer dose treatment of 1.2 g/polybag (D3) resulted in the highest plant height, the number of leaves, and leaf area of red spinach at 14, 21, and 28 days after planting. The ZA fertilizer dose treatment of 1.2 g/polybag (D3) resulted in the highest wet and dry weight plants of 49.15 and 4.38 grams, respectively. The ZA 1.2 gr/polybag dose is the ideal dose to increase the productivity of red spinach.Bayam merah (Amaranthus gangeticus) termasuk sayuran penting yang disukai masyarakat karena bernilai gizi tinggi dan mudah pembudidayaannya. Upaya peningkatan hasil bayam merah salah satunya dengan pemupukan untuk menambah nutrisi yang dibutuhkan tanaman. Tujuan dari penelitian ini adalah mempelajari respon pertumbuhan dan hasil tanaman bayam merah pada perlakuan dosis pupuk ZA. Pelaksanaan penelitian ini menggunakan Rancangan Acak Lengkap (RAL) satu faktor. Faktor yang diujikan adalah dosis pupuk ZA, terdiri 6 taraf, yaitu: tanpa pupuk ZA (D0); 0.4 gr/polybag (D1); 0.8 gr/polybag (D2); 1.2 gr/polybag (D3); 1.6 gr/polybag (D4); 2 gr /polybag (D5). Percobaan dilakukan dengan ulangan sebanyak 4 kali. Analisis data menggunakan analysis of variance (ANOVA), apabila berbeda nyata dilanjutkan uji Beda Nyata Terkecil (BNT) taraf 5%. Perlakuan dosis pupuk ZA berpengaruh nyata terhadap pertumbuhan dan hasil tanaman bayam merah. Perlakuan dosis pupuk ZA 1.2 gr/polybag (D3) menghasilkan tinggi, jumlah dan luas daun tanaman bayam merah tertinggi pada pengamatan umur 14, 21, dan 28 HST. Dosis pupuk ZA 1.2 gr/polybag (D3) juga menunjukkan berat basah dan berat kering tanaman tertinggi sebesar 49.15 dan 4.38 gram. Dosis ZA 1.2 gr/polybag merupakan dosis ideal untuk meningkatkan produktivitas tanaman bayam merah.

scholarly journals EFFECTS OF TEMPERATURE, SUBSTRATE AND LUMINOSITY CONDITIONS ON CHIA SEED GERMINATION

2019 ◽  
Vol 32 (2) ◽  
pp. 411-418
Author(s):  
CLAUDIA KELY PIRES DE MATTOS SORANA ◽  
CARLOS HENRIQUE QUEIROZ REGO ◽  
FERNANDA BRITO CARDOSO ◽  
TIAGO ROQUE BENETOLI DA SILVA ◽  
ANA CARINA DA SILVA CÂNDIDO ◽  
...  
Keyword(s):  
Seed Germination ◽  
High Temperatures ◽  
Germination Test ◽  
Paper Substrate ◽  
Randomized Design ◽  
Chia Seed ◽  
Germination Speed ◽  
Mean Germination Time ◽  
Effects Of Temperature ◽  
Completely Randomized Design

ABSTRACT The aim of the present study was to evaluate the effects of temperature, substrate, and luminosity on chia seeds in order to determine adequate conditions for a germination test. The experiment consisted of a completely randomized design, in a 4 × 5 × 2 factorial scheme (four substrates × five temperatures × two luminosity conditions), with four replications. The following variables were analyzed: first germination count, germination, germination speed index, and mean germination time. Germination was best at 15, 20, 25, and 30 °C for the on-paper, paper roll, and sand substrates. However, in the presence of luminosity and at 25 °C, the on-paper substrate had the highest mean. For all substrates, the lowest germination was achieved at 35 °C, proving that high temperatures reduce chia seed germination. Germination speed index was highest at 25 and 30 °C for on-paper, paper roll, and sand substrates, in both the presence and absence of luminosity. Chia seeds are considered to be neutral photoblasts. Germination tests should be performed with the on-paper substrate, at 25 °C, and with a duration of seven days. The first count should be carried out four days after establishment of the test.

scholarly journals Temperatures and substrates for germination and vigor of Erythroxylum pauferrense Plowman seeds

2019 ◽  
Vol 41 ◽  
pp. e46030
Author(s):  
João Everthon da Silva Ribeiro ◽  
Arliston Pereira Leite ◽  
Jackson Silva Nóbrega ◽  
Edna Ursulino Alves ◽  
Riselane de Lucena Alcântara Bruno ◽  
...  
Keyword(s):  
Dry Mass ◽  
Germination Percentage ◽  
Seed Vigor ◽  
Randomized Design ◽  
Temperature Regimes ◽  
Seedling Length ◽  
Physiological Quality ◽  
Mean Germination Time ◽  
Completely Randomized Design ◽  
Understory Plant

Erythroxylum pauferrense is an endemic understory plant species of the Northeast Region of Brazil. The species is of great importance to the region and so ecophysiological studies are needed for its preservation. The objective of the present study was to determine the best substrates and temperatures for testing germination and seed vigor of E. pauferrense. An experiment was performed comprising a completely randomized design in a 5 x 4 factorial scheme, with five temperature regimes (20, 25, 30, 35°C constant and 20-30°C alternating) and four types of substrates (paper, vermiculite, sand and commercial substrate). The following characteristics were evaluated: germination percentage, first germination count, germination speed index, mean germination time, seedling length and dry mass (root and shoot). Paper and vermiculite substrates combined with constant temperatures of 20, 25, 30 and alternated between 20-30°C, provide greater seed germination and vigor while 35°C reduces seed physiological quality.

scholarly journals Respon Akar Tanaman Kelapa Sawit (Elaeis guineensis Jacq.) di Pre Nursery Pada Pemberian Air dan Pupuk Urea

2019 ◽  
Vol 5 (2) ◽  
pp. 41
Author(s):  
Yetti Elidar
Keyword(s):  
Elaeis Guineensis ◽  
Dry Weight ◽  
Water Volume ◽  
Urea Fertilizer ◽  
Root Dry Weight ◽  
Randomized Design ◽  
Significant Difference ◽  
Four Levels ◽  
Water Plants ◽  
Number Of Treatment

The research objective was to determine the effect of water and the volume of urea fertilizer and the interaction of both the oil palm plant roots in the nursery early (pre nursery). This research was conducted in the Nursery Faculty of Agriculture, University of Mulawarman, Samarinda from February to May 2014. The study using completely randomized design (CRD) factorial 3 x 4 with three replications. The first factor is the volume of water (A) in the planting medium consists of three levels, namely: a1 = 100 cc of water plants-1; a2 = 200 cc of water plants-1; a3 = 300 cc water plant-1. The second factor is the provision of urea fertilizer (P), which consists of four levels, namely: p0 = without fertilizer urea; p1 = urea 1 g L-1 water to 100 seedlings; p2 = urea 2 g L-1 water to 100 seedlings; PP3 = urea 3 g L-1 water to 100 seedlings. Number of treatment were 12 and each treatment was repeated three times and each replication consisted of three plants so the total number is 108 plants. Data were statistically analyzed and tested further by testing the smallest Significant Difference (LSD) at 5% level. The results showed that the water volume of 200 cc of plant-1 (p2) provides the highest root dry weight average of 254.13 g. While the interaction between the water volume of 200 cc of plant-1 and dose of urea 3 g L-1 water (a2p3) provides the highest root dry weight average of 300,00 g.

Sign in / Sign up

Export Citation Format

Share Document