scholarly journals Изучение потенциала хранения коллекционных образцов кукурузы (Zea mays L.) в условиях консервации ex situ

2021 ◽  
Author(s):  
Людмила Корлэтяну ◽  
◽  
Л. Мелиян ◽  
Анатолий Ганя ◽  
Виктория Михэилэ ◽  
...  
Keyword(s):  
Accelerated Aging ◽  
Seed Storage ◽  
Ex Situ ◽  
Maize Seeds ◽  
Accelerated Aging Test ◽  
Maize Genotypes ◽  
Aging Test ◽  
Post Test ◽  
Storage Potential ◽  
Group 2

Seed storage potential (SP) is an important complex indicator characterizing the ability of collection samples to be conserved ex situ in a genetic bank. The accelerated aging test (AA test) was used to determine the storage potential of maize samples. The AA test for maize seeds was carried out at 43-44°C, 90-100% relative humidity, with an aging time of 96 hours. After the test, various morphophysiological parameters were determined on 8 collection maize samples: germination energy and seed germination, root length and quantity, wet and dry root biomass. The maize genotypes were divided into 3 groups according to various post-test indicators: group 1 (high SP) – genotypes P235; P 310; P243; group 2 (medium SP) – genotypes Р 402, Р 383, Р 465; group 3 (low SP) - genotypes Р 461 и Р 427. Thus, the use of AA test on maize collection samples based on morphophysiological characteristics allows gradation of genotypes by seed SP.

scholarly journals Association between the artificial aging test and the natural storage of coffee seeds

2018 ◽  
Vol 40 (2) ◽  
pp. 164-172 ◽  
Author(s):  
Tatiana Botelho Fantazzini ◽  
Dellyzete Veiga Franco da Rosa ◽  
Cristiane Carvalho Pereira ◽  
Diego de Sousa Pereira ◽  
Marcelo Ângelo Cirillo ◽  
...  
Keyword(s):  
Coffea Arabica ◽  
Artificial Aging ◽  
Accelerated Aging ◽  
Coffea Canephora ◽  
Correlation Factor ◽  
Controlled Environment ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Storage Potential ◽  
Coffea Arabica L

Abstract: The accelerated aging test is recognized as an efficient method for evaluating the vigor of seed lots and for estimating their storage potential. Thus, this work aimed to evaluate the association between artificial aging and natural storage of coffee seeds, through the correlation factor analysis. Seeds of four cultivars of Coffea arabica L. (Catuaí Amarelo, Arara, Catiguá, and Mundo Novo) and one of Coffea canephora Pierre (Apoatã) were used. Part of the newly-harvested seeds were aged in a growth chamber under controlled temperature and relative humidity conditions (42 ºC and 100% RH) for periods of 0, 4, 6, 8, and 10 days. The other part of the seeds was stored in tri-wall paper packaging for a period of 2, 4, and 6 months in a non-climate-controlled environment. Artificial aging allows predictions on the storage potential of coffee seeds, although the artificial aging periods depend on the cultivars.

scholarly journals GERMINATION AND VIGOR OF INDUSTRIALLY TREATED MAIZE SEEDS

2019 ◽  
Vol 3 (1) ◽  
pp. 59-70
Author(s):  
Raianny Dos Reis Teixeira ◽  
Joseanny Cardoso Da Silva Pereira
Keyword(s):  
Seed Treatment ◽  
Storage Time ◽  
Detrimental Effect ◽  
Accelerated Aging ◽  
Storage Period ◽  
Maize Seeds ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Physiological Quality ◽  
Germination Vigor

The industrial seed treatment combines the application of insecticides, fungicides, nematicides, micronutrients and other products. However, seed submission to the combination of several products can cause phytotoxicity, resulting in reduced viability and vigor, which is directly proportional to the increase in the storage period of the material. Thus, the objective was to determine the vigor of corn seeds and the percentage of germination in substrates when submitted to two types of industrial treatment as a function of storage time. The experimental design was a completely randomized, 2 x 2 x 2 factorial design (two treatments, two times and two substrates / two vigor tests / two emergency tests) for the germination, vigor and emergency tests. Hybrid corn seeds were treated with two types of industrial treatments: TSI3 (combination of three products - K-Obiol 25 CE, Actellic 500 CE, Maxim Advanced) and TSI4 (combination of four products - K-Obiol 25 CE, Actellic 500 CE, Maxim Advanced, Cruiser 350 FS). The analyzed variables were: germination, vigor and emergence. In the germination test, it was verified that, when vermiculite was added, there was a higher percentage of germination in corn seeds. When added thiametoxan, the combination of products in the treatment of corn seeds had a detrimental effect on their physiological quality, reducing germination and vigor. The industrially treated corn seeds showed a reduction in vigor when submitted to the accelerated aging test after the prolongation of the storage period.

scholarly journals Genetic diversity for physiological quality of seeds from corn (Zea mays L.) intervarietal crossbreeds

2013 ◽  
Vol 35 (4) ◽  
pp. 449-456 ◽  
Author(s):  
Daniele Nerling ◽  
Cileide Maria Medeiros Coelho ◽  
Rubens Onofre Nodari
Keyword(s):  
Genetic Diversity ◽  
Zea Mays L ◽  
Accelerated Aging ◽  
Genetic Contribution ◽  
Percentage Germination ◽  
Canonical Variables ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Physiological Quality

The physiological quality is based on the genotype and may be accompanied since the first stages of selection through the study of genetic diversity. The purpose of this study was to evaluate the parental genetic contribution in the seed physiological quality in corn intervarietal crossbreeds. The intervarietal crossbreeds were performed using landraces genotypes, open pollinated varieties and commercial hybrids. The seeds obtained from the crossbreed, their equivalents and parentals were evaluated regarding their water percentage, germination, germination speed rate, accelerated aging, field emergence and electrical conductivity. The seeds obtained in the crossbreed are viable and vivid with heterosis when compared with the parentals. The accelerated aging test was more effective for selecting the strongest genotypes. The canonical variables were useful to group the genotypes that presented similar physiological characteristics. The genotypes MPA 01 x Pixurum 05, MPA 01 x AS1565, MPA 01 x SJC5886, SJC5886 x Pixurum 05 and Fundacep 35 x SCS 154 Fortuna were the best crossbreeds regarding the production of better physiological quality seeds.

scholarly journals Accelerated aging test in amaranth (Amaranthus cruentus L.) seeds

2018 ◽  
Vol 12 (03) ◽  
pp. 444-448
Author(s):  
Andréa Bicca Noguez Martins ◽  
◽  
Caroline Jácome Costa ◽  
Fernanda da Motta Xavier ◽  
André Pich Brunes ◽  
...  
Keyword(s):  
Accelerated Aging ◽  
Amaranthus Cruentus ◽  
Accelerated Aging Test ◽  
Aging Test

scholarly journals Electrical conductivity and accelerated aging in amaranth (Amaranthus crueentus L.) seeds

2018 ◽  
Vol 40 (1) ◽  
pp. 44-51
Author(s):  
Thaís D’Avila Rosa ◽  
Ariele Paula Nadal ◽  
Henrique Roberto Maldaner ◽  
Vanessa Nogueira Soares ◽  
Gizele Ingrid Gadotti ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Accelerated Aging ◽  
Water Volume ◽  
Amaranthus Cruentus ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Immersion Period ◽  
Amaranth Seed

Abstract: The objective of this study was to determine adequate conditions of water volume, seed quantity and immersion period to perform the electrical conductivity test, and to analyze the parameters of the accelerated aging test and its correlation with the the physiological potential of amaranth seeds. Five lots of amaranth seeds (Amaranthus cruentus), cultivar BRS Alegria, were used. The initial evaluation of the quality of these lots comprehended the following tests: water content, germination, first germination count, accelerated aging (traditional method, and modified versions, using unsaturated and saturated saline solution for the periods of 24, 48 and 72 h), electrical conductivity in different periods (2, 4, 6, 8 and 24 h), different quantities of water (25, 50 and 75 mL), different seed quantities (100 and 150), and field emergence. It could be concluded that the accelerated aging test at 41 °C, for 72 h, using unsaturated NaCl solution was efficient in the classification of amaranth seed lots in levels of vigor. The electrical conductivity test performed for 8 hours with 25 mL of water and 100 seeds was efficient in the classification of amaranth seeds as to their physiological potential.

scholarly journals INTEMPERISMO ARTIFICIAL DE QUATRO REVESTIMENTOS APLICADOS EM MADEIRAS DE DUAS ESPÉCIES FLORESTAIS

Nativa ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 313 ◽  
Author(s):  
Aline Krolow Soares ◽  
Roberto Lessa Pereira ◽  
Pedro Henrique Gonzalez de Cademartori ◽  
Henrique Weber Dalla Costa ◽  
Darci Alberto Gatto
Keyword(s):  
Morphological Changes ◽  
Eucalyptus Grandis ◽  
Accelerated Aging ◽  
Surface Wettability ◽  
Forest Species ◽  
Artificial Weathering ◽  
Color Changes ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Weathering Resistance

O presente estudo teve como objetivo investigar a resistência ao intemperismo artificial de quatro revestimentos aplicados nas madeiras de duas espécies florestais. Para tal, foram utilizadas seis árvores de Eucalyptus grandis e três árvores de Tetrorchidium rubrivenium as quais foram desdobradas para confecção de 50 amostras para cada espécie, com dimensões de 5,0x7,0x1,0cm (largura, comprimento e espessura, respectivamente). A superfície das madeiras foi revestida com quatro acabamentos: polistein, verniz marítimo, tinta branca base óleo e tinta branca base água. As amostras sem revestimento e revestidas foram submetidas ao ensaio de envelhecimento acelerado durante 480 horas. A resistência ao intemperismo artificial foi avaliada por meio das modificações colorimétricas e morfológicas ao longo da exposição das madeiras e em função da molhabilidade superficial. Os principais resultados mostraram que a superfície das madeiras  tendeu a tons opacos após exposição de 480 horas. Foi observado que os revestimentos não evitaram o aumento da molhabilidade superficial. Após todo o período de exposição, as madeiras não apresentaram modificações morfológicas tais como rachaduras e descascamento dos revestimentos, o que denota importante característica de proteção à madeira.Palavras-chave: Eucalyptus, canemaçu, modificação da superfície, envelhecimento acelerado, durabilidade da madeira. ARTIFICIAL WEATHERING OF FOUR COATINGS APPLIED ON WOODS OF TWO FOREST SPECIES ABSTRACT:The present study aimed to investigate the resistance to artificial weathering of four coatings applied on wood from two forest species. Six trees of Eucalyptus grandis and three trees of Tetrorchidium rubrivenium were cut to produce 50 wood samples for each species with dimensions of 5.0x7.0x1.0 cm (width, length and thickness, respectively). Wood surface was coated with four finishing products: polistein, marine varnish, oil-based white paint and water-based white paint. The uncoated and coated wood samples were subjected to accelerated aging test for 480h. The artificial weathering resistance was evaluated by color changes and surface wettability. The main results showed the coated woods tend to opaque tones after the exposure for 480h. The coatings did not avoid the increase of the surface wettability. After the exposure, both woods did not present morphological changes, such as cracks and peeling into the coatings, which represent relevant characteristics for wood protection.Keywords: Eucalyptus, canemaçu, surface modification, accelerated aging, wood durability. DOI:

Sign in / Sign up

Export Citation Format

Share Document