Navegando por Assunto "Sementes - Testes"

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Acompanhamento de campos de produção de sementes dehortaliças na empresa Hortivale-Sementes do Vale
(2019) Oliveira, Tarcísio Ferreira de; Melo, Roberto de Albuquerque; http://lattes.cnpq.br/9419474898249921; http://lattes.cnpq.br/1402579486374895
Avaliação de progênies C2 de coentro para germinação e vigor das sementes
(2019) Lima, Sonny Mateus Delfim da Silva; Carvalho, Rejane Rodrigues da Costa e; http://lattes.cnpq.br/3307316028992311; http://lattes.cnpq.br/1297066278757054
Testes de vigor de resistência a estresse e bioquímicos em sementes de feijão caupi – uma revisão
(2021-12-10) Araújo, Anna Beatriz Nogueira de; Silva, Monalisa Alves Diniz da; http://lattes.cnpq.br/0446410743186066; http://lattes.cnpq.br/1953643340073473
Vigna unguiculata L. or cowpea beans, as it is commonly known, is one the main food sources in a lot of countries, stand out Brazil. For implementation of crops it is necessary to use seeds with high physiological quality, which understands the germination and the vigor. Between the tests of stress the best known are accelerated aging, controlled deterioration, cold test and low temperature germination. Biochemical tests stand out the electrical conductivity, potassium and tetrazolium leaching, which assess the condition of the seed. Therefore, the vigor tests make it possible to classify seed lots at different vigor levels. Represent a great help for seed producing companies, who need to make storage decisions, marketing and disposal; Even if the seeds meet the minimum germination percentage required by the Ministry of Agriculture livestock and supply to be marketed. The present work aimed to carry out a literature review on scientific articles published in the period from 2011 to 2021, regarding vigor tests, accelerated aging, electrical conductivity and tetrazolium in cowpea seeds. Graphs were drawn up regarding expressions and keywords: tetrazolium in cowpea seeds; electrical conductivity in cowpea seeds and accelerated aging in cowpea seeds; electrical conductivity in Vigna unguiculata; accelerated aging in Vigna unguiculata; tetrazolium in Vigna unguiculata and cowpea in seed vigor tests, considering the database of Google Academic , Web of Science and Scielo, year of publication and languages ( Portuguese, English and Spanish). The database that presented the most published articles was Google Academic, as it is a simple and easily accessible platform, different from platforms Scielo and Web of Science. On the occasion of the evaluation of cowpea seeds will be subjected to accelerated ageing vigor tests, electrical conductivity and the tetrazolium, one should be aware that there are several factors that influence the results; genotype and aspects of the methodology itself, but also the intrinsic seed conditions and pre- and post-harvest management.
Tratamentos pré-germinativos na superação de dormência de sementes de Colubrina glandulosa Perk. (Rhamnaceae)
(2019-12-03) Coelho, Nayla Pamella da Silva Cavalcanti; Silva, Emanuel Araújo; Barbosa, Marta Ribeiro; http://lattes.cnpq.br/9559350854481161; http://lattes.cnpq.br/2765651276275384; http://lattes.cnpq.br/2836457612273970
Little is known about the use of plant extracts to break dormancy of forest seeds, so it is interesting to study the effect of aqueous extract of Cyperus rotundus as a treatment for overcoming seed dormancy. The aim of this study was to evaluate the efficiency of pre-germinative treatments in overcoming seed dormancy of Colubrina glandulosa Perk. The experiment was developed at the Forest Seed Laboratory of the Federal Rural University of Pernambuco. At the time, seeds of the species obtained from matrices located at the Carpina Sugar Cane Experimental Station were submitted to germination tests by applying 6 treatments with 4 replications. Each unit was characterized by 25 seeds packed in a polyethylene box containing a sheet of paper towels. The treatments were: (T1) without acid scarification + autoclaved distilled water; (T2) without acid scarification + aqueous extract of C. rotundus 5%; (T3) without acid scarification + aqueous extract of C. rotundus 10%; (T4) with acid scarification + aqueous extract of C. rotundus 5%; (T5) with acid scarification + 10% aqueous extract of C. rotundus; and (T6) with acid scarification + autoclaved distilled water. To evaluate the effects of aqueous extract of Cyperus rotundus on seed germination of C. glandulosa, we analyzed: IVG, VG and G%. The statistical design used was completely randomized and in a 2x3 factorial arrangement, considering 2 pre-germinative conditions and 3 types of wetting. Data were submitted to analysis of variance (ANOVA) and means compared by Tukey test at 5% probability. The G% and IVG results obtained showed that there was no significant interaction between the evaluated treatments and that there was a significant difference in the VG between the treatments in which the seeds were not scarified and those that received acid scarification submitted to moistening with same extract type of 10% concentrated thyroid. It was concluded that the interactions between conditioned pre-germination treatments for overcoming dormancy of C. glandulosa dispersion units were not significant.