scholarly journals Controlled deterioration to evaluate okra seed vigor

2013 ◽  
Vol 31 (2) ◽  
pp. 317-321 ◽  
Author(s):  
Salvador B Torres ◽  
Maryjane DA Gomes ◽  
Francisca Gleiciane da Silva ◽  
Clarisse P Benedito ◽  
Francisco ECB Pereira
Keyword(s):  
Quality Control ◽  
Moisture Content ◽  
Seed Quality ◽  
Seedling Emergence ◽  
Seed Vigor ◽  
Santa Cruz ◽  
Control Programs ◽  
Moisture Contents ◽  
Essential Components ◽  
Controlled Deterioration

Germination and vigor tests are essential components of seed quality control programs adopted by seed industries. We studied different procedures to perform the controlled deterioration test to identify differences in vigor among okra seed lots. Four seed lots of Colhe Bem cultivar and five seed lots of Santa Cruz 47 cultivar were submitted to the following tests: germination, seedling emergence, controlled deterioration (seeds with moisture contents of 18, 21 and 24% at 45°C for 24 and 48 hours) and moisture content. The controlled deterioration test is efficient to evaluate the physiological potential of okra seeds, and the combination of 24% water, 45°C during 24 hours is recommended.

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 Potassium leaching test in evaluation of popcorn seed vigor

2019 ◽  
Vol 41 (4) ◽  
pp. 461-469
Author(s):  
Hugo César Rodrigues Moreira Catão ◽  
Franciele Caixeta ◽  
Ítala Menegon Castilho ◽  
Luana de Souza Marinke ◽  
Gabriel Zanardo Martins ◽  
...  
Keyword(s):  
Quality Control ◽  
Moisture Content ◽  
Seedling Emergence ◽  
Seed Vigor ◽  
Reliable Information ◽  
Fundamental Importance ◽  
Leaching Test ◽  
Control Programs ◽  
Physiological Quality

Abstract: The search for tests that offer fast and reliable information on the physiological potential of seeds is of fundamental importance for quality control programs. The aim of this study was to evaluate the efficiency of the potassium leaching test in identification of different vigor levels of popcorn seed lots. Five seed lots of the hybrids AP8203 and AP4512 were tested for moisture content, and physiological quality was evaluated by tests of germination, first count of germination, and seedling emergence in the field. These results were compared to variations in the potassium leaching test (temperatures of 25 °C and 30 °C, volumes of 50 mL and 75 mL of water, fifty and one hundred seeds, and periods of 0.5 h, 1 h, 1.5 h, 2 h, 2.5 h, 3 h, 4 h and 5 h). Results showed that the potassium leaching test is efficient in separating the popcorn seed lots regarding physiological potential, and the most adequate conditions for this test are the use of fifty seeds with 50 mL of water for two hours at 30 ºC.

scholarly journals Improved assessment of wheat seeds vigor

2012 ◽  
Vol 36 (6) ◽  
pp. 608-614 ◽  
Author(s):  
Tereza Cristina de Carvalho ◽  
Francisco Carlos Krzyzanowski ◽  
Osvaldo de Castro Ohlson ◽  
Maristela Panobianco
Keyword(s):  
Moisture Content ◽  
Filter Paper ◽  
Seed Quality ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Seed Vigor ◽  
Wheat Seed ◽  
Efficient Procedure ◽  
Tetrazolium Test ◽  
Wheat Seeds

The tetrazolium test is widely used for seed vigor assessment of various plant species. For wheat, however, there is no methodology specifically recommended. This study aimed at determining an efficient procedure to evaluate vigor of wheat seeds by this test; besides allowing the establishment of seed quality classes. Thus, four different wheat seed lots were assessed by determining the moisture content and through tests of germination, accelerated aging, and field seedling emergence. The following methodologies were assessed: 1) longitudinal bisection of seed, with subsequent placement of the two halves on filter paper moistened with a 1.0% tetrazolium solution, at 30º C, for 2 h; 2) longitudinal bisection, with subsequent immersion of one seed half into a 1.0% tetrazolium solution, at 30º C, for 3 h; and 3) longitudinal bisection, with subsequent immersion of one seed half into a 0.075% tetrazolium solution, at 40º C, for 2 h. It was concluded that the tetrazolium test is more efficient in evaluating wheat seed vigor when performed with immersion of one half of the seed into a 0.075% tetrazolium solution (40º C, for 2 h) or a 0.1% tetrazolium solution (30º C, during 3 h); allowing to sort seeds into four quality classes.

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 Electrical Conductivity Testing as Applied to the Assessment of Freshly Collected Kielmeyera coriacea Mart. Seeds

ISRN Agronomy ◽  
2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Kennya Mara Oliveira Ramos ◽  
Juliana M. M. Matos ◽  
Rosana C. C. Martins ◽  
Ildeu S. Martins
Keyword(s):  
Electrical Conductivity ◽  
Quality Control ◽  
Constant Temperature ◽  
Seed Quality ◽  
Seed Vigor ◽  
Promising Method ◽  
Control Programs ◽  
Kielmeyera Coriacea

Assessment of seed vigor has long been an important tool of seed quality control programs. The conductivity test is a promising method for assessment of seed vigor, but proper protocols for its execution have yet to be established. The objective of this study was to assess the efficiency of electrical conductivity (EC) testing as a means of assessing the viability of freshly collected Kielmeyera Coriacea Mart. seeds. The test was performed on individual seeds rather than in a bulk configuration. Seeds were soaked for different periods (30 min, 90 min, 120 min., 180 min, and 240 min) at a constant temperature of 25°C. Conductivity was then measured with a benchtop EC meter.

scholarly journals Chlorophyll Fluorescence Sorting Method to Improve Quality of Capsicum Pepper Seed Lots Produced from Different Maturity Fruits

HortScience ◽  
2013 ◽  
Vol 48 (8) ◽  
pp. 965-968 ◽  
Author(s):  
Burcu Begüm Kenanoglu ◽  
Ibrahim Demir ◽  
Henk Jalink
Keyword(s):  
Chlorophyll Fluorescence ◽  
Seed Quality ◽  
Seedling Emergence ◽  
Seed Vigor ◽  
Harvest Dates ◽  
Immature Seeds ◽  
Controlled Deterioration ◽  
Non Destructive ◽  
Mature Seeds

This work was conducted to investigate the efficacy of chlorophyll fluorescence (CF) sorting to improve seed germination, seedling emergence, and vigor of seeds produced from different maturity fruits of four different cultivars. Four harvest dates from each cultivar were evaluated by harvesting orange (immature), bright red (half-mature), dark red (mature), and dark red and soft (overmature) fruits. Seeds were either sorted or nonsorted after harvesting and standard laboratory germination, seedling emergence, and controlled deterioration tests were conducted. CF sorting significantly increased laboratory germination, seedling emergence, and seed vigor. Maximum improvements were obtained from seeds harvested from half-mature and mature stages. Mean germination improvement among cultivars between CF-sorted and nonsorted seeds were 14% in the immature seeds, 11% in half-mature seeds, 6% in mature seeds, and 9% in overmature seeds. Improvements in seedling emergence were 21%, 17%, 9%, and 10% and 4%, 11%, 10%, 14% for seed vigor (CD germination) in the all maturity stages of seed lots, respectively. CF has the potential to upgrade seed quality in pepper lots as a non-destructive sorting technology.

scholarly journals Physiological potential of cauliflower seeds

2008 ◽  
Vol 65 (4) ◽  
pp. 374-380 ◽  
Author(s):  
Ana Lúcia Pereira Kikuti ◽  
Julio Marcos-Filho
Keyword(s):  
Electrical Conductivity ◽  
Laboratory Tests ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Seed Vigor ◽  
Control Programs ◽  
Controlled Deterioration ◽  
Favorable Conditions ◽  
Consistent Information ◽  
Potassium Leakage

The assessment of seed physiological performance is essential to provide consistent information to compose quality control programs conducted by seed companies and allow prompt decisions to reduce post-harvest and commercialization problems. This research was carried to evaluate the efficiency of different procedures to determine cauliflower seed vigor. Six lots of the cultivar Sharon were initially characterized by germination and seedling emergence, and subsequently subjected to traditional and saturated salt accelerated aging, controlled deterioration, electrical conductivity, and potassium leachate tests, in two evaluation times. The traditional accelerated aging (41ºC/48 h), the saturated salt procedure (45ºC/72 h), the controlled deterioration (moisture content adjusted to 20% or 22% and aging at 45ºC/24 h), the electrical conductivity (50 seeds/75 mL water and evaluation after 4 h) and the potassium leakage (25 seeds/50 mL of water and evaluation after 30 min) laboratory tests are sensitive to detect differences in the physiological potential of cauliflower seeds. However, those results did not relate to the percentage seedling emergence in greenhouse controlled conditions, as a consequence of the favorable conditions for emergence. However, the differences identified in the tests may be related to the ability of seed lots to perform in less favorable environments.

scholarly journals Evaluation cottonseed vigor through computer image analysis of the seedlings1

2019 ◽  
Vol 41 (1) ◽  
pp. 54-59 ◽  
Author(s):  
Plínio Duarte Corrêa ◽  
Silvio Moure Cicero ◽  
Haynna Fernandes Abud
Keyword(s):  
Quality Control ◽  
Image Analysis ◽  
Low Temperature ◽  
Computer Analysis ◽  
Computer Image ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Seed Vigor ◽  
Computer Image Analysis ◽  
Control Programs

Abstract: The evaluation of seed vigor through image analysis has been gaining space in quality-control programs due to its easy use, objectivity, and speed. This study aimed at assessing the computer image analysis of seedling as a method for evaluate cottonseed (SVIS®), and compare it with tests traditionally employed for the same purpose. The experiments used cottonseeds of the cultivar FM975WS. First germination count, accelerated aging, low-temperature germination, emergence in sand and emergence-in sand speed index, seedling emergence in the field, and computer analysis were used to evaluate the seed vigor. The results showed that performing the computer image analysis with the software SVIS® is a viable alternative to assess the vigor of cottonseeds.

scholarly journals Sensitivity of seed to desiccation in cupuassu (Theobroma grandiflorum (Willd. ex Spreng.) K. Schum. - sterculiaceae

2008 ◽  
Vol 65 (5) ◽  
pp. 557-560 ◽  
Author(s):  
Eniel David Cruz ◽  
Silvio Moure Cicero
Keyword(s):  
Moisture Content ◽  
Seed Quality ◽  
Storage Conditions ◽  
Seed Vigor ◽  
Good Seed ◽  
Tropical Fruit ◽  
Theobroma Grandiflorum ◽  
Moisture Contents ◽  
Fruit Species ◽  
Seed Moisture

The response of seeds to reduction in moisture content will determine whether they can be stored by conventional methods. The objective of this study was to verify the effect of desiccation on the germination and vigor of cupuassu (Theobroma grandiflorum (Willd. ex Spreng.) K. Schum.) seeds, a tropical fruit species. The following seed moisture contents (SMC) were tested: 57.1%, 53.7%, 49.8%, 46.5%, 41.4%, 35.4%, 28.3%, 23.2%, 17.4%, 15.5% and 14.6%. Desiccation of seeds to as low as 41.4% (SMC) did not affect emergence, germination or vigor. However, reductions in speed of emergence were observed below 41.4%. When SMC was equal or lower than 35.4% a reduction in seed quality was observed. Loss of seed quality was increased when moisture content was equal or lower than 28.3%, and at 14.5% SMC all cupuassu seeds were dead. The observed sensitivity of cupuassu seeds to reductions in moisture content suggests that storage conditions maintaining SMC higher than 41% are necessary for good seed vigor of this species.

scholarly journals Physiological potential of soybean seeds after maturation and submitted to artificial drying

2017 ◽  
Vol 39 (4) ◽  
pp. 374-384
Author(s):  
Cesar Pedro Hartmann Filho ◽  
André Luís Duarte Goneli ◽  
Tathiana Elisa Masetto ◽  
Elton Aparecido Siqueira Martins ◽  
Guilherme Cardoso Oba
Keyword(s):  
Moisture Content ◽  
Dry Matter ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Maturation Stage ◽  
Soybean Seeds ◽  
Germination Test ◽  
Moisture Contents ◽  
Three Samples ◽  
Maturation Stages

Abstract: This study evaluated the physiological potential of soybean seeds harvested during two seasons, on different maturation stages and subjected to different drying temperatures. The seeds were harvested at the maturations stages R7, R7 + 2, R7 + 3, R7 + 5, R7 + 6, R7 + 7, R7 + 10 and R7 + 12 days (55, 50, 45, 40, 35, 30, 25, and 20% of moisture content). For each maturation stage, seeds were divided into three samples: one sample was used to directly evaluate the physiological potential, and the others were dried at 40 °C and 50 °C, until reaching the moisture content of 11.5%. The physiological potential was evaluated through germination test, first germination count of germination, accelerated aging, modified cold, electrical conductivity and seedling emergence. The maximum physiological potential of seeds is achieved at the moisture content of 55%, the point that the dry matter is maximum. The seeds became tolerant to artificial drying approximately at the stage R7 + 7 days (30% of moisture content). Germination and vigor of the soybean seeds reduce as the drying temperature is increased from 40 °C to 50 °C, and this effect is enhanced when the seeds show moisture contents above 30%.

Sign in / Sign up

Export Citation Format

Share Document