LUCENA, E. O.; http://lattes.cnpq.br/8639774344846694; LUCENA, Edjane Oliveira de.
Résumé:
The Caatinga is a biome which has a rich diversity of plants and animals and many of these
species are endemic. Its vegetation is one of the most exploited because it is a source of
income for most of the population of the Northeast, being the main forms of exploitation the
deforestation and harvesting of firewood as an energy source. The Ziziphus joazeiro has many
qualities, from ornamentation, food for animals in the dry season, especially for goats, sheep
and bats, and still provides shade. The present study aims to evaluate the biometrical
variations and seed germination in ten Zizyphus joazeiro matrices, in order to select the
matrices that show better germination potential for seedlings. We evaluated the percentage of
germination, rate of germination, daily mean germination, shoot length, diameter, length and
root dry weight and dry weight of shoot and the root. The statistical design was a DIC in
factorial and means were compared by the Scott-Knott test at 5% probability and transformed
into arcsine. The results show that there is a genetic and environmental variation between the
dies. With respect to the percentage of germination, the matrices 1, 2, 3, 4 and 5 were
highlighted; matrix 9 in the dry mass; in fruit length and diameter the matrices 1, 4 and 10
were highlighted; and matrices 5 and 8 in smallest length of seed .
