Accelerated aging tests and electrical conductivity of calopo Seeds

The physiological quality of forage legume seeds is a fundamental factor for their successful sowing in pastures, since once the seeds reach their physiological maturity, a continuous process begins. The irreversible deterioration of seeds makes it necessary to evaluate their vigor during the legume...

Full description

Bibliographic Details
Main Authors: Suelen Silva Nunes Florentino, Waldssimiler Teixeira de Mattos, Paloma Pereira Bonfitto, Alessandra Aparecida Giacomini, Luciana Gerdes, Suleize Rocha Terra Milan
Format: Article
Language:English
Published: Instituto de Zootecnia 2017-11-01
Series:Boletim de Indústria Animal
Subjects:
Online Access:http://35.199.65.98/ojs/index.php/bia/article/view/1509
_version_ 1818513707228987392
author Suelen Silva Nunes Florentino
Waldssimiler Teixeira de Mattos
Paloma Pereira Bonfitto
Alessandra Aparecida Giacomini
Luciana Gerdes
Suleize Rocha Terra Milan
author_facet Suelen Silva Nunes Florentino
Waldssimiler Teixeira de Mattos
Paloma Pereira Bonfitto
Alessandra Aparecida Giacomini
Luciana Gerdes
Suleize Rocha Terra Milan
author_sort Suelen Silva Nunes Florentino
collection DOAJ
description The physiological quality of forage legume seeds is a fundamental factor for their successful sowing in pastures, since once the seeds reach their physiological maturity, a continuous process begins. The irreversible deterioration of seeds makes it necessary to evaluate their vigor during the legume planting process in the pasture area, and later to ensure productivity. Calopogonium (Calopogonium mucunoides cv. Comum) is one of the forage legume species recommended for use in integrated grass-legume swards. Thus, the best combination of temperature and time of submission of the accelerated aging vigor test was evaluated to determine the vigor of this species. The experiment was carried out in the Plant Production Laboratory of Instituto Federal de Educação, Ciência e Tecnologia do sul de Minas Gerais, Inconfidentes Campus, Inconfidentes, MG in 2016. In the experiment, a single batch of calopo seeds was used, which was submitted to three accelerated aging temperatures (35, 40 and 45 ºC) for three time periods (12, 24 and 36 h) with four replications in a completely randomized design in a 3x3 factorial arrangement. Treatments were evaluated simultaneously and the parameters evaluated were seed water content, germination speed index and electrical conductivity. Analysis of variance was performed through the MIXED procedure of the SAS® (Statistical Analysis System) statistical package. The accelerated aging test promoted adequate conditions for the water absorption by the seeds, demonstrating a gradual increase of the water content with increasing time intervals. However, with the increase of temperature, although there was still water absorption, this absorption was reduced. The evaluation of the germination rate showed that temperature interfered negatively in the germination process. It was also found that seeds with the fastest development (showing greater vigor) were those aged at 35 ºC for 12 h. For electrical conductivity, lower leaching of ions to the solution was observed when the seeds were submitted to the temperature of 35 ºC in relation to the others, demonstrating superior physiological quality, because when subjected to higher temperatures there was higher leaching due to the damages caused to the components of the cell membranes by high temperatures. Therefore, the accelerated aging test is recommended for the species under study at temperature of 35 ° C for 12 h.
first_indexed 2024-12-11T00:05:19Z
format Article
id doaj.art-971ba4a4062b4780ba9ccda958455e9d
institution Directory Open Access Journal
issn 1981-4100
language English
last_indexed 2024-12-11T00:05:19Z
publishDate 2017-11-01
publisher Instituto de Zootecnia
record_format Article
series Boletim de Indústria Animal
spelling doaj.art-971ba4a4062b4780ba9ccda958455e9d2022-12-22T01:28:20ZengInstituto de ZootecniaBoletim de Indústria Animal1981-41002017-11-0174Accelerated aging tests and electrical conductivity of calopo SeedsSuelen Silva Nunes FlorentinoWaldssimiler Teixeira de MattosPaloma Pereira BonfittoAlessandra Aparecida GiacominiLuciana GerdesSuleize Rocha Terra MilanThe physiological quality of forage legume seeds is a fundamental factor for their successful sowing in pastures, since once the seeds reach their physiological maturity, a continuous process begins. The irreversible deterioration of seeds makes it necessary to evaluate their vigor during the legume planting process in the pasture area, and later to ensure productivity. Calopogonium (Calopogonium mucunoides cv. Comum) is one of the forage legume species recommended for use in integrated grass-legume swards. Thus, the best combination of temperature and time of submission of the accelerated aging vigor test was evaluated to determine the vigor of this species. The experiment was carried out in the Plant Production Laboratory of Instituto Federal de Educação, Ciência e Tecnologia do sul de Minas Gerais, Inconfidentes Campus, Inconfidentes, MG in 2016. In the experiment, a single batch of calopo seeds was used, which was submitted to three accelerated aging temperatures (35, 40 and 45 ºC) for three time periods (12, 24 and 36 h) with four replications in a completely randomized design in a 3x3 factorial arrangement. Treatments were evaluated simultaneously and the parameters evaluated were seed water content, germination speed index and electrical conductivity. Analysis of variance was performed through the MIXED procedure of the SAS® (Statistical Analysis System) statistical package. The accelerated aging test promoted adequate conditions for the water absorption by the seeds, demonstrating a gradual increase of the water content with increasing time intervals. However, with the increase of temperature, although there was still water absorption, this absorption was reduced. The evaluation of the germination rate showed that temperature interfered negatively in the germination process. It was also found that seeds with the fastest development (showing greater vigor) were those aged at 35 ºC for 12 h. For electrical conductivity, lower leaching of ions to the solution was observed when the seeds were submitted to the temperature of 35 ºC in relation to the others, demonstrating superior physiological quality, because when subjected to higher temperatures there was higher leaching due to the damages caused to the components of the cell membranes by high temperatures. Therefore, the accelerated aging test is recommended for the species under study at temperature of 35 ° C for 12 h. http://35.199.65.98/ojs/index.php/bia/article/view/1509Calopogonium mucunoideslegume forageseed vigor tests
spellingShingle Suelen Silva Nunes Florentino
Waldssimiler Teixeira de Mattos
Paloma Pereira Bonfitto
Alessandra Aparecida Giacomini
Luciana Gerdes
Suleize Rocha Terra Milan
Accelerated aging tests and electrical conductivity of calopo Seeds
Boletim de Indústria Animal
Calopogonium mucunoides
legume forage
seed vigor tests
title Accelerated aging tests and electrical conductivity of calopo Seeds
title_full Accelerated aging tests and electrical conductivity of calopo Seeds
title_fullStr Accelerated aging tests and electrical conductivity of calopo Seeds
title_full_unstemmed Accelerated aging tests and electrical conductivity of calopo Seeds
title_short Accelerated aging tests and electrical conductivity of calopo Seeds
title_sort accelerated aging tests and electrical conductivity of calopo seeds
topic Calopogonium mucunoides
legume forage
seed vigor tests
url http://35.199.65.98/ojs/index.php/bia/article/view/1509
work_keys_str_mv AT suelensilvanunesflorentino acceleratedagingtestsandelectricalconductivityofcaloposeeds
AT waldssimilerteixeirademattos acceleratedagingtestsandelectricalconductivityofcaloposeeds
AT palomapereirabonfitto acceleratedagingtestsandelectricalconductivityofcaloposeeds
AT alessandraaparecidagiacomini acceleratedagingtestsandelectricalconductivityofcaloposeeds
AT lucianagerdes acceleratedagingtestsandelectricalconductivityofcaloposeeds
AT suleizerochaterramilan acceleratedagingtestsandelectricalconductivityofcaloposeeds