scholarly journals Assessment of the physiological potential of super sweet corn seeds

2013 ◽  
Vol 35 (3) ◽  
pp. 340-346 ◽  
Author(s):  
Renata Oliveira Alvarenga ◽  
Julio Marcos-Filho ◽  
Tathiana Silva Timóteo
Keyword(s):  
Seed Quality ◽  
Sweet Corn ◽  
Seedling Emergence ◽  
Primary Root ◽  
Accelerated Aging ◽  
Cold Test ◽  
Seed Vigor ◽  
Corn Seed ◽  
Control Programs ◽  
Seedling Length

The assessment of physiological potential is essential in seed quality control programs. This study compared the sensitivity of different procedures for evaluating super sweet corn seed vigor, focusing on the primary root protrusion test. Six seed lots, each of the SWB 551 and SWB 585 hybrids, were used. Seed physiological potential was evaluated by germination and vigor tests (speed of germination, traditional and saturated salt accelerated aging, cold test, seedling length, seedling emergence and primary root protrusion). Primary root protrusion was evaluated every 12 hours at 15 °C, 20 °C and 25 °C using two criteria (primary root protrusion and seedlings at the 2 mm root stage). It was concluded that the primary root protrusion test at 15 °C can evaluate super sweet corn seed vigor by counting the number of seedlings at the 2 mm root stage.

scholarly journals Seedling imaging analysis and traditional tests to assess okra seed vigor

2013 ◽  
Vol 35 (4) ◽  
pp. 443-448 ◽  
Author(s):  
Ana Lúcia Pereira Kikuti ◽  
Júlio Marcos-Filho
Keyword(s):  
Imaging System ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Seed Vigor ◽  
Control Programs ◽  
Seed Industry ◽  
Accelerated Aging Test ◽  
Vigor Index ◽  
Seedling Length ◽  
Germination Speed

Seed vigor testing is an important component of quality control programs adopted by seed industry. The software Seed Vigor Imaging System (SVIS) has been successfully used for seed vigor assessment in different species. The objective of this research was to verify the SVIS efficiency to assess okra seed vigor in comparison to other vigor tests used for this species. Five seed lots of 'Clemson Americano' and four of 'Santa Cruz' were submitted to germination (speed and percentage), cold germination (speed and percentage), traditional and saturated salt accelerated aging (41 ºC/72 and 96 h) and seedling emergence tests during 12 months storage. Vigor index, uniformity of growth and seedling length were determined by the software Seed Vigor Imaging System (SVIS). Results showed that the vigor index and seedling length determined by the SVIS analyses are efficient to determine okra seed vigor as well as the accelerated aging test (41 ºC/72 h).

scholarly journals Digital images of seedling for evaluating coffee seed vigor

2019 ◽  
Vol 41 (1) ◽  
pp. 60-68 ◽  
Author(s):  
Heiber Andres Trujillo ◽  
Francisco Guilhien Gomes-Junior ◽  
Silvio Moure Cicero
Keyword(s):  
Seed Quality ◽  
Digital Images ◽  
Imaging System ◽  
Primary Root ◽  
Accelerated Aging ◽  
Seed Vigor ◽  
Control Programs ◽  
Scanned Images ◽  
Coffea Arabica L ◽  
Coffee Seed

Abstract: The digital image analysis of seedlings has become largely employed in seed quality-control programs due to its feasibility, objectivity and fast results. Despite these advantages, no studies have yet demonstrated the efficiency of this technique for analyzing coffee seed vigor. The present study aimed at evaluating the efficiency of the Seed Vigor Imaging System (SVIS®) in determining the vigor of coffee seeds (Coffea arabica L.) from digital images of seedlings. Also, the results of these analyses were contrasted with conventional vigor tests. Six seed lots from each cultivar, Bourbon and Catucaí 20/15, were used. The research was conducted in two experimental times, and the seed vigor was determined by the tests of first germination count, accelerated aging, electrical conductivity, primary root protrusion speed, as well as by the analysis of scanned images of seedlings, made possible by the SVIS® software. For the Bourbon and Catucaí 20/15 cultivars, the SVIS® analysis was able to discriminate lots of both high and low vigor (vigor indexes of 317 to 752, and 181 to 703, respectively). A similar outcome was obtained from the conventional tests appraised in this research. Eventually, it was possible to conclude that the digital analysis of 20-day-old seedlings by SVIS® is an efficient method to evaluate coffee seed vigor.

scholarly journals Treatment of rice seeds with thiamethoxam: reflections on physiological performance

2014 ◽  
Vol 36 (4) ◽  
pp. 458-464 ◽  
Author(s):  
Andreia da Silva Almeida ◽  
Cristiane Deuner ◽  
Carolina Terra Borges ◽  
Géri Eduardo Meneghello ◽  
Adilson Jauer ◽  
...  
Keyword(s):  
Defense Mechanisms ◽  
Seed Quality ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Cold Test ◽  
Rice Seed ◽  
Seedling Length ◽  
Rice Seeds ◽  
Growing Conditions ◽  
System Length

Thiamethoxam is a systemic insecticide that is transported within the plant through its cells and can activate various physiological reactions such as protein expression. These proteins interact with defense mechanisms against stress in adverse growing conditions. The objective of this study was to evaluate the effect of thiamethoxam in rice seeds and the potential benefits that it can provide. Two experiments were carried out and, in both, seeds were treated with commercial product containing 350 g of thiamethoxam active ingredient per liter of product, at doses 0, 100, 200, 300 and 400 mL.100 kg-1 of seeds: 1) it was conducted with three lots of IRGA BR 424 cultivar rice seeds, which were submitted to the following laboratory tests: germination, cold test, accelerated aging test, as well as field assessment: total seedling length, root system length, number of panicles and productivity; 2) four lots of IRGA BR 424 cultivar rice seeds, two high and two low-vigor, were subjected to the following tests: germination, cold test and greenhouse seedling emergence test. Thiamethoxam rice seed treatment positively favors the seed quality.

scholarly journals Assessment of physiological potential of cucumber seeds using the software Seedling Vigor Imaging System® (SVIS®)

2012 ◽  
Vol 34 (2) ◽  
pp. 255-263 ◽  
Author(s):  
Adrielle Aparecida Chiquito ◽  
Francisco Guilhien Gomes Junior ◽  
Julio Marcos-Filho
Keyword(s):  
Seedling Growth ◽  
Imaging System ◽  
Seedling Emergence ◽  
Primary Root ◽  
Accelerated Aging ◽  
Objective Evaluation ◽  
Seed Vigor ◽  
Cucumis Sativus L ◽  
Seedling Length ◽  
Definition Of

The software Seed Vigor Imaging System (SVIS®), has been successfully used to evaluate seed physiological potential by automated analyses of scanned seedlings. In this research, the efficiency of this system was compared to other tests accepted for assessing cucumber (Cucumis sativus L.) seed vigor of distinct seed lots of Supremo and Safira cultivars. Seeds were subjected to germination, traditional and saturated salt accelerated aging, seedling emergence, seedling length and SVIS analyses (determination of vigor indices and seedling growth uniformity, lengths of primary root, hypocotyl and whole seedlings). It was also determined whether the definition of seedling growth/uniformity ratios affects the sensitivity of the SVIS®. Results showed that analyses SVIS have provided consistent identification of seed lots performance, and have produced information comparable to those from recommended seed vigor tests, thus demonstrating a suitable sensitivity for a rapid and objective evaluation of physiological potential of cucumber seeds. Analyses of four-days-old cucumber seedlings using the SVIS® are more accurate and growth/uniformity does not affect the precision of results.

scholarly journals Semi-automated Phenotyping of Soybean Seedlings and Its Relation With Physiological Seed Quality

2019 ◽  
Vol 11 (16) ◽  
pp. 1
Author(s):  
Jackson Araújo da Silva ◽  
André Dantas de Medeiros ◽  
Daniel Teixeira Pinheiro ◽  
Marcio Dias Pereira ◽  
Laércio Junio da Silva ◽  
...  
Keyword(s):  
Seed Quality ◽  
Seedling Emergence ◽  
Primary Root ◽  
Soybean Seed ◽  
Cold Test ◽  
Research Field ◽  
Seed Vigor ◽  
Promising Alternative ◽  
Soybean Seedlings ◽  
Vigor Index

The development of procedures enabling agility and effectiveness to the analyses of seed vigor are great advances for the seed research field. The aim of this paper was to evaluate the efficiency of the Seedling Analysis System (SAPL®) to seedling phenotyping and determining the physiological potential of soybean seeds, in comparison with the information provided by traditional vigor tests recommended for this species. The characterizing of physiological potential of the seed lots was carried out based on germination tests, first germination count, seedling emergence, cold test, and electrical conductivity. The results of these tests were compared with the data obtained using image analysis with the software SAPL®, which was used to evaluate the development seven- day old seedlings. It was obtained the length of shoot, primary root and entire seedling, growth rates, uniformity, vigor index and corrected vigor index, based on different variations of the growth/uniformity ratio, namely 80:20, 70:30, 60:40, in the vigor index calculation. Analysis of images of the seven-day old seedlings using SAPL® enables phenotyping of soybean seedlings and is a consistent and promising alternative for identifying differences in vigor between soybean seed lots, equivalent to that found with traditional vigor tests.

scholarly journals Assessment of physiological potential of stored pea (Pisum sativum L.) seeds

2013 ◽  
Vol 35 (1) ◽  
pp. 42-50 ◽  
Author(s):  
Fábio Mielezrski ◽  
Julio Marcos-Filho
Keyword(s):  
Electrical Conductivity ◽  
Growth Habit ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Seed Storage ◽  
Seed Vigor ◽  
Seedling Length ◽  
Pea Seeds ◽  
Cold Chamber ◽  
Pea Seed

Research on pea seed storage and the identification of efficient seed vigor tests for this species is still insufficient, especially for cultivars that produce wrinkled seeds used for consumption in natura. The objective of this study was to verify the accuracy of tests to assess the physiological potential of pea seed lots stored in different environments. Four seed lots of two cultivars, 'Telefone Alta' (indeterminate growth habit) and 'Itapuã' (determinate growth habit) were stored under different environmental conditions for 8 months: a) laboratory uncontrolled b) dry and cold chamber (10 ºC and 30% RH), c) controlled environment (20 ºC and 70% RH). Seed vigor (accelerated aging, electrical conductivity, seedling length and seedling emergence) was evaluated initially and after four and eight months storage. Results showed that the use of seed lots of high initial physiological potential is fundamental for guaranteeing the desired performance of pea seeds during storage. Wrinkled pea seeds should be stored between harvest and sowing in an environment in which the sum of the relative humidity (%) and temperature (°C) does not exceed 70. Physiological potential of pea seeds should be evaluated by at least two vigor tests; consideration to accelerated aging and electrical conductivity tests is recommended.

scholarly journals Effect of seed vigor and sowing densities on the yield and physiological potential of wheat seeds

2021 ◽  
Vol 43 ◽  
Author(s):  
Carolina Pereira Cardoso ◽  
José Henrique Bizzarri Bazzo ◽  
Jéssica de Lucena Marinho ◽  
Claudemir Zucareli
Keyword(s):  
Seed Yield ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Seed Vigor ◽  
Wheat Crop ◽  
Seedling Length ◽  
Physiological Quality ◽  
Initial Seed ◽  
Wheat Seeds

Abstract: Initial seed vigor and sowing density interact in establishment of plants in the field, and can thus affect expression of the plasticity of the wheat crop and the yield and physiological quality of the seeds produced. The aim of this study was to evaluate the effect of seed vigor levels in combination with sowing densities on the yield and physiological potential of wheat seeds. The cultivars BRS Gralha-Azul and BRS Sabiá were used in a randomized block experimental design in a 2 × 4 factorial arrangement, with four replications. The treatments consisted of seeds of high and low vigor and four sowing densities (150, 250, 350, and 450 seeds.m-2). The following evaluations were made: seed yield, germination, first germination count, seedling length, seedling dry matter, accelerated aging, emergence speed index, and seedling emergence in sand. An increase in sowing density favors the seed yield of both cultivars; however, it reduces the vigor of the seeds produced by the cultivar BRS Gralha-Azul, especially of the seeds produced by plants originating from high vigor seeds. For the cultivar BRS Sabiá, an increase in sowing density decreases the germination performance of seeds produced by plants originating from low vigor seeds.

scholarly journals Assessment of Seed Vigor Tests for Crambe abyssinica

2018 ◽  
Vol 10 (12) ◽  
pp. 527
Author(s):  
Tássia Fernanda Santos Neri Soares ◽  
Bruno Antônio Lemos de Freitas ◽  
José Geraldo de Araújo Ferreira Filho ◽  
Denise Cunha Fernandes dos Santos Dias ◽  
Camila Andrade Fialho ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Water Stress ◽  
Stress Test ◽  
Primary Root ◽  
Cold Test ◽  
Seed Vigor ◽  
Stress Tests ◽  
Germination Test ◽  
Crambe Abyssinica ◽  
Seedling Length

Vigor tests are important mainly to identify differences associated to lots performance in field conditions. The objective of this study was to define the most appropriate tests to evaluate the crambe (Crambe abyssinica) seeds vigor. Seven seed lots of crambe were subjected to the standard germination (on the first and last count), germination speed index (GSI), primary root protrusion speed index (PRPSI), seedling length dry and weight seedling, water stress test using PEG 6000 at -0.2 MPa, electrical conductivity and cold test without soil. Crambe lots studied had germination percentages varying from 54 to 80.5%. The GSI, on the first count of water stress and electrical conductivity test ranked lots between two vigor classes The PRPSI, seedling length, seedling dry weight and last count of water stress tests were less sensitive to evaluate vigor for crambe seed. The cold test without soil and the first count of standard germination test were capable to dishtinguish lots more efficiently than the standard germination test on last count by ranking four of the seven seed lots studied.

scholarly journals Accelerated aging and controlled deterioration for the determination of the physiological potential of onion seeds

2003 ◽  
Vol 60 (3) ◽  
pp. 465-469 ◽  
Author(s):  
Angelica Brod Rodo ◽  
Julio Marcos Filho
Keyword(s):  
Moisture Content ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Seed Vigor ◽  
Seed Moisture Content ◽  
Control Programs ◽  
Traditional Procedure ◽  
Accelerated Aging Test ◽  
Seed Moisture ◽  
Controlled Deterioration

International research on vegetable seed vigor is not at the same level attained for grain crops species. This study was conducted to identify reliable procedures for the accelerated aging and controlled deterioration tests to rank onion (Allium cepa L.) seed lots according to their physiological potential. Six seed lots of the cultivars Aurora and Petroline were evaluated in the laboratory for germination, first count, seedling vigor classification, traditional and saturated salt accelerated aging (41ºC / 48 and 72 h), controlled deterioration (24% of water / 45ºC / 24 h) and seedling emergence tests. Seed moisture content after the saturated salt accelerated aging test was lower and uniform, which is considered an important advantage in comparison to the traditional procedure. The saturated salt accelerated aging (41ºC / 48 and 72 h) and controlled deterioration (moisture content adjusted to 24% / 45ºC / 24 h) tests were the best procedures to assess the physiological potential of onion seeds, and are indicated for use in quality control programs.

scholarly journals Quality of maize seeds harvested and husked at high moisture levels

2013 ◽  
Vol 35 (3) ◽  
pp. 276-283 ◽  
Author(s):  
Valquíria de Fátima Ferreira ◽  
João Almir Oliveira ◽  
Thaís Francielle Ferreira ◽  
Leandro Vilela Reis ◽  
Vanessa de Andrade ◽  
...  
Keyword(s):  
Seed Quality ◽  
Seedling Emergence ◽  
Mechanical Damage ◽  
Accelerated Aging ◽  
Cold Test ◽  
High Moisture ◽  
Maize Seeds ◽  
Seed Moisture ◽  
Seed Health Test

Harvest of maize seeds with high moisture levels has been recommended; nevertheless, after harvest, the ears undergo the process of husking and there is a need to assess the compatibility of these processes. The purpose of this study was to assess the effects of mechanical husking on the quality of maize seeds collected at high moisture levels. Dent BM 3061 hybrid maize seeds, manually collected from the ear, with moisture contents of 45%, 40% and 35%, and a 20/64 round sieve were used. The ears were mechanically husked (CWA machine, 312 rpm), dried in a stationary drier at 35 ⁰C until reaching 22% moisture, followed by drying at 42 ºC until reaching 12%. Then, they underwent shelling, followed by a chemical treatment with Maxin® + K-obiol® + Actellic®. Seed quality was assessed according to the occurrence tests of mechanical damage, first count, germination, seedling emergence, emergence speed index, average emergence time, electrical conductivity, accelerated aging, cold test, and seed health test at every quarter for 9 months. The mechanical husking affects maize seed quality, depending on the degree of seed moisture at harvest and on the material studied. This hybrid's seeds can be collected with seed moisture levels at 40% with the use of mechanical husking.

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