11 documents found, page 1 of 2
Protective action of priming agents on Urochloa brizantha seeds under water res...
Oliveira,Thaísa Fernanda; Santos,Heloisa Oliveira dos; Vaz-Tostes,Douglas Pelegrini; Cavasin,Pedro Yuri; Rocha,Debora Kelli; Tirelli,Giovani VirgílioAbstract: Analyses of germination of seeds under artificial stress conditions are tools for a better understanding of the survival and adaptation capacity of species under natural stress conditions. Therefore, the aim of this study was to evaluate the effect of priming on seed germination, on breaking of dormancy, and on the length of Urochloa brizantha seedlings under water restriction and salt stress conditio...
Effect of priming and different types of drying on the physiological quality of...
Melo,Giselle Márcia de; Santos,Heloisa Oliveira dos; Oliveira,Thaísa Fernanda; Cunha Neto,Antonio Rodrigues da; Pereira,Aline Aparecida SilvaAbstract: Seed vigor is one of the main limitations to meet the demanding forage market. In order to boost the productive potential and provide the satisfactory development of quality seeds and seedlings, it is necessary to develop techniques that provide quality and high productivity. With the Urochloa genus stands out in the seed production and quality, this study aimed to evaluate the effect of seed priming ...
Use of different conditioning agents and quality evaluation of two lots of anna...
Fernandes,Alana Chocorosqui; Faria,Julio Cezar Tannure; Faria,José Marcio Rocha; Pires,Raquel Maria de Oliveira; Carvalho,Everson ReisAbstract Due to the low germination of annatto seeds (Bixa orellana L.), it is necessary to test different techniques that facilitate and enable its production, such as the use of the physiological conditioning method. Here, we aimed to characterize the germination of two annatto seed lots under physiological conditioning. For this, two lots of seeds (newly-collected and stored) were submitted to physiological ...
Reserve mobilization in soybean seeds under water restriction after storage
Oliveira,Thaísa Fernanda; Santos,Heloisa Oliveira dos; Carvalho,Rafaela Aparecida de; Silva,Hellismar Wakson da; Pires,Raquel Maria de OliveiraAbstract: Germination does not guarantee plant establishment if there is no efficient and enough reserve mobilization from seeds to the initial seedling growth, mainly in adverse situations. Therefore, this study aimed to evaluate the mobilization of reserves in soybean seeds under water restriction. Four soybean seed lots previously stored for one year were used in the study. To simulate water stress, we used ...
Biochemical changes and physiological quality of corn seeds subjected to differ...
Oliveira,Thiago Lucas de; Pinho,Renzo Garcia Von; Santos,Heloisa Oliveira dos; Silva,Karen Marcelle de Jesus; Pereira,Elise de MatosAbstract: The chemical treatment of corn seeds is widely adopted for protecting crops at the early stages. However, some molecules interfere in the quality of seeds, especially when stored, by accelerating their deterioration. The objective of this work was to investigate the influence of insecticides on the enzymatic expression and quality of corn seeds subjected to storage. Seeds of the hybrids 2B647PW and SH...
Does nitric oxide protect Eucalyptus urophylla seeds under salt stress conditions?
Pereira,Thalita Maciel; Santos,Heloisa Oliveira dos; Cunha Neto,Antonio Rodrigues da; Pelissari,Fabieli; Pereira,Wilson Vicente; Melo,Lucas Amaral deAbstract: The germination response of seeds under artificial stress conditions is a tool for better understanding of the survival and adaptation ability of species under natural stress conditions. The aims of this study were to evaluate the protective effect of nitric oxide during germination as well as seed vigor and seedling development of Eucalyptus urophylla under salt stress conditions. The experimental de...
Does the substrate affect the germination of soybean seeds treated with phytosa...
Rocha,Debora Kelli; Carvalho,Everson Reis; Pires,Raquel Maria de Oliveira; Santos,Heloisa Oliveira dos; Penido,Amanda CarvalhoABSTRACT The use of an appropriate method that accurately expresses physiological seed quality and minimizes possible phytotoxicity by chemical products in laboratory testing with soybean seeds is relevant. The objective of this work was to evaluate the influence and infer the method adequacy for the representative evaluation of physiological quality of soybean seeds treated with phytosanitary products. Two exp...
Expression of ZmLEA3, AOX2 and ZmPP2C genes in maize lines associated with tole...
Marques,Thaís Lima; Von Pinho,Renzo Garcia; Von Pinho,Édila Vilela de Resende; Santos,Heloisa Oliveira dosABSTRACT Knowing genes related to water deficit is a valuable tool to assist and accelerate the selection process of maize genotypes more adapted to drought conditions. Therefore, this work aimed to evaluate genes expression related to tolerance to water deficit in maize lines, using proteomic and transcriptomic analyses. Two lines previously classified as tolerant (91-T) and non-tolerant (57-NT) to low water a...
Physiological and biochemical aspects of castor beans seeds deterioration store...
Santos,Heloisa Oliveira dos; Carvalho,Maria Laene Moreira de; Caldeira,Carla Massimo; Coelho,Stefânia Vilas Boas; Pinho,Edila Vilela de Resende VonAbstract: The present study aimed to evaluate effects of different storage conditions on the castor bean seed cultivar IAC-226 quality, stored for 12 months. For this purpose, seeds were stored in different environment and packaging conditions: in a cold chamber and conventional storage, using multiwall Kraft paper and in no vacuum and vacuum plastic packages at 1 atm; as well as under cryopreservation storage ...
Aspectos fisiológicos e bioquímicos da germinação de sementes de alface em dife...
Catão,Hugo Cesar Rodrigues Moreira; Gomes,Luiz Antônio Augusto; Santos,Heloisa Oliveira dos; Guimarães,Renato Mendes; Fonseca,Pedro Henrique FariaO objetivo deste trabalho foi avaliar os padrões eletroforéticos das proteínas resistentes ao calor e a atividade da enzima endo-β-mananase durante a germinação de sementes de alface, em alta temperatura. Sementes de oito cultivares de alface foram submetidas aos testes de germinação, primeira contagem e emergência em duas temperaturas, 20 e 35ºC. Foram calculados o índice de velocidade de germinação (IVG) e o ...