Abstract
Abstract Dormancy in grape seeds slows the progress of many breeding programs of the crop, culminating in low uniformity and low germination percentages. Conventional methods used to overcome dormancy are time-consuming. Thus, in vitro seed germination emerges as a promising alternative to ensure the germination of grape seeds. In this study, we examined the in vitro germination and vigor of seedlings originating from seeds of ‘Red Globe’, ‘Italia’ and ‘Niagara Rosada’ grapes in growth media supplemented with five concentrations of gibberellic acid (GA3) (0, 1.41, 2.83, 4.24 and 5.66 µmol L-1) for 47 days. The use of GA3 increased seed germination percentage and seedling vigor, in the three varieties. Therefore, for the in vitro germination of seeds of ‘Red Globe’ can be used between 1.41 to 4.24 µmol L-1 of GA3. For ‘Italia’ grapes is indicated 1.41 µmol L-1 from GA3 and for ‘Niagara Rosada’ grape is as between 1.41 to 5.66 µmol L-1 from GA3 can be used.
Highlights
Germinação in vitro para a superação da dormência de sementes de videira ‘Red Globe’, ‘Italia’ e ‘Niagara Rosada’
The low germination percentage of grape seeds constitutes a major obstacle to breeders (WANG et al, 2009; VAL et al, 2010)
Dormancy is the main cause of low germination percentages (CELIK, 2001; WANG et al, 2009)
Summary
Germinação in vitro para a superação da dormência de sementes de videira ‘Red Globe’, ‘Italia’ e ‘Niagara Rosada’. Buscou-se avaliar a germinação in vitro e o vigor das plântulas, oriundas de sementes das cultivares de videira ‘Red Globe’, ‘Italia’ e ‘Niagara Rosada’ em meios de cultivo suplementados com cinco concentrações de ácido giberélico (GA3) (0; 1.41; 2.83; 4.24 e 5.66 μmol L-1), por 47 dias. Dormancy is the main cause of low germination percentages (CELIK, 2001; WANG et al, 2009).
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
