Physiological changes in hybrid Brachiaria cv. Mulato II after accelerated aging to overcome dormancy
Abstract: To evaluate the effect of accelerated aging to overcome dormancy of hybrid Brachiaria cv. Mulato II (U. brizantha x U. decumbens x U. ruziziensis), seeds were collected from two lots with and without scarification, submitted to 42 °C and high humidity (98%) for different periods (0, 24, 48...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Associação Brasileira de Tecnologia de Sementes
|
| Series: | Journal of Seed Science |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-15372017000300244&lng=en&tlng=en |
| _version_ | 1818307785701457920 |
|---|---|
| author | Diego de Sousa Pereira Maria Laene Moreira de Carvalho Renato Mendes Guimarães Ariadne Santos Oliveira Gabriel Abreu Reis |
| author_facet | Diego de Sousa Pereira Maria Laene Moreira de Carvalho Renato Mendes Guimarães Ariadne Santos Oliveira Gabriel Abreu Reis |
| author_sort | Diego de Sousa Pereira |
| collection | DOAJ |
| description | Abstract: To evaluate the effect of accelerated aging to overcome dormancy of hybrid Brachiaria cv. Mulato II (U. brizantha x U. decumbens x U. ruziziensis), seeds were collected from two lots with and without scarification, submitted to 42 °C and high humidity (98%) for different periods (0, 24, 48, 72 and 96 h) and then dried at 30 °C to the humidity of 9.1%. The physiological changes were evaluated by tetrazolium, germination, electrical conductivity, respiratory activity and enzymatic evaluation. The exposure of the hybrid Brachiaria cv. Mulato II to accelerated aging at 42 °C and 98% relative air humidity for up to 96 hours does not alter its viability by the tetrazolium test. Accelerated aging at 42 °C and 98% of humidity for up to 48 hours favors the germination of the scarified seeds of hybrid Brachiaria cv. Mulato II, with increased expression of α-amylase enzyme and reduction of electrical conductivity values. Loss of vigor occurs in scarified seeds of hybrid Brachiaria cv. Mulato II when exposed to accelerated aging at 42 °C and 98% of humidity from 96 hours with consequent changes in enzymatic systems and increased of the respiratory rate. |
| first_indexed | 2024-12-13T07:03:54Z |
| format | Article |
| id | doaj.art-24476b5bfed24c97b5085cff609e26bc |
| institution | Directory Open Access Journal |
| issn | 2317-1545 |
| language | English |
| last_indexed | 2024-12-13T07:03:54Z |
| publisher | Associação Brasileira de Tecnologia de Sementes |
| record_format | Article |
| series | Journal of Seed Science |
| spelling | doaj.art-24476b5bfed24c97b5085cff609e26bc2022-12-21T23:55:52ZengAssociação Brasileira de Tecnologia de SementesJournal of Seed Science2317-154539324425310.1590/2317-1545v39n3171313S2317-15372017000300244Physiological changes in hybrid Brachiaria cv. Mulato II after accelerated aging to overcome dormancyDiego de Sousa PereiraMaria Laene Moreira de CarvalhoRenato Mendes GuimarãesAriadne Santos OliveiraGabriel Abreu ReisAbstract: To evaluate the effect of accelerated aging to overcome dormancy of hybrid Brachiaria cv. Mulato II (U. brizantha x U. decumbens x U. ruziziensis), seeds were collected from two lots with and without scarification, submitted to 42 °C and high humidity (98%) for different periods (0, 24, 48, 72 and 96 h) and then dried at 30 °C to the humidity of 9.1%. The physiological changes were evaluated by tetrazolium, germination, electrical conductivity, respiratory activity and enzymatic evaluation. The exposure of the hybrid Brachiaria cv. Mulato II to accelerated aging at 42 °C and 98% relative air humidity for up to 96 hours does not alter its viability by the tetrazolium test. Accelerated aging at 42 °C and 98% of humidity for up to 48 hours favors the germination of the scarified seeds of hybrid Brachiaria cv. Mulato II, with increased expression of α-amylase enzyme and reduction of electrical conductivity values. Loss of vigor occurs in scarified seeds of hybrid Brachiaria cv. Mulato II when exposed to accelerated aging at 42 °C and 98% of humidity from 96 hours with consequent changes in enzymatic systems and increased of the respiratory rate.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-15372017000300244&lng=en&tlng=enforage seedsgerminationelectrical conductivityrespirationisoenzymes |
| spellingShingle | Diego de Sousa Pereira Maria Laene Moreira de Carvalho Renato Mendes Guimarães Ariadne Santos Oliveira Gabriel Abreu Reis Physiological changes in hybrid Brachiaria cv. Mulato II after accelerated aging to overcome dormancy Journal of Seed Science forage seeds germination electrical conductivity respiration isoenzymes |
| title | Physiological changes in hybrid Brachiaria cv. Mulato II after accelerated aging to overcome dormancy |
| title_full | Physiological changes in hybrid Brachiaria cv. Mulato II after accelerated aging to overcome dormancy |
| title_fullStr | Physiological changes in hybrid Brachiaria cv. Mulato II after accelerated aging to overcome dormancy |
| title_full_unstemmed | Physiological changes in hybrid Brachiaria cv. Mulato II after accelerated aging to overcome dormancy |
| title_short | Physiological changes in hybrid Brachiaria cv. Mulato II after accelerated aging to overcome dormancy |
| title_sort | physiological changes in hybrid brachiaria cv mulato ii after accelerated aging to overcome dormancy |
| topic | forage seeds germination electrical conductivity respiration isoenzymes |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-15372017000300244&lng=en&tlng=en |
| work_keys_str_mv | AT diegodesousapereira physiologicalchangesinhybridbrachiariacvmulatoiiafteracceleratedagingtoovercomedormancy AT marialaenemoreiradecarvalho physiologicalchangesinhybridbrachiariacvmulatoiiafteracceleratedagingtoovercomedormancy AT renatomendesguimaraes physiologicalchangesinhybridbrachiariacvmulatoiiafteracceleratedagingtoovercomedormancy AT ariadnesantosoliveira physiologicalchangesinhybridbrachiariacvmulatoiiafteracceleratedagingtoovercomedormancy AT gabrielabreureis physiologicalchangesinhybridbrachiariacvmulatoiiafteracceleratedagingtoovercomedormancy |