Quality of Guava Seed (Psidium guajava L.) White and Red Varieties on Different Substrates
Calebe Oliveira Crispim da Silva *
Federal University of Tocantins (UFT), Gurupi, TO, Brazil.
Daniella Inácio Barros
Institute Federal of Tocantins (IFTO), Gurupi, TO, Brazil.
Helber Véras Nunes
Institute Federal of Tocantins (IFTO), Gurupi, TO, Brazil.
Bruno Henrique Di Napoli Nunes
Federal University of Tocantins (UFT), Gurupi, TO, Brazil.
João Lucas Aires Dias
Institute Federal of Tocantins (IFTO), Gurupi, TO, Brazil.
Vitória Alves Cavalcante
Institute Federal of Tocantins (IFTO), Gurupi, TO, Brazil.
Higor Silva Rezende
Institute Federal of Tocantins (IFTO), Gurupi, TO, Brazil.
Igor Fayder de Souza e Silva
Institute Federal of Tocantins (IFTO), Gurupi, TO, Brazil.
Dhenys Miller Jorge de Souza
Institute Federal of Tocantins (IFTO), Gurupi, TO, Brazil.
Victor Hugo Silva Rezende
Institute Federal of Tocantins (IFTO), Gurupi, TO, Brazil.
*Author to whom correspondence should be addressed.
Abstract
The guava tree is the fruit of the guava tree of the species Psidium guajava L. belonging to the family of Myrtaceae a rustic fruit and adapts to the most varied types of soils. It is a fleshy fruit, thin-skinned, green, or when mature yellowish and very rich in soluble fibers. Seed germination is influenced by factors such as substrate, which can improve germination, resulting in the acquisition of more vigorous seedlings. The experiment was conducted in a greenhouse at the Federal Institute of Education, Science and Technology of Tocantins, Gurupi/TO, in 2017. The seeds of guava Kumagai and Paluma (Psidium guajava L.) used in the experiment were taken directly from the fruit, which was collected in the urban region of Gurupi in March 2017. For the two varieties evaluated, both for the first emergence count and seedling emergence, the substrates stood out: organic compound + black earth + commercial substrate (55% and 37%) (67% and 49%), washed sand + rice straw + black earth (52% and 36%) (52% and 36 %) lower substrates: washed sand (46% and 10%) (66% and 35%) and rice straw + sawdust + black ground (47% and 7%) (59% and 31%), respectively. The substrates: organic compound + black earth + commercial substrate and washed sand + rice straw + black earth provided the highest values of viability and vigour in white and red pulp guava seeds.
Keywords: Quality, guava seedlings varieties, substrates