Morphological characterization of fruits and seed quality of selected seed trees of Cariniana estrellensis (Raddi) Kuntze
DOI:
https://doi.org/10.32480/rscp.2019-24-1.36-47Keywords:
Forest seeds, forest restoration, matrix trees, native species, Atlantic forestAbstract
The objective of this work was to perform the morphological characterization of fruits and to determine the quality of Cariniana estrellensis seeds collected from different matrix trees. The fruits were collected from four trees located in the Mbaracayú Forest Nature Reserve, and received coding according to their common name (Ka'i Ka'ygua) and tree number: KAKA2, KAKA7, KAKA9 and KAKA11. For the morphological characterization of fruits, the length (L), upper diameter (DS), medium diameter (DM) and lower diameter (DI) of the fruits were measured (cm). To determine the amount of seeds per fruit, ten fruits were taken randomly from each batch and their seeds counted. The analysis of purity, moisture content, germination percentage were carried out and the germination speed index was calculated. In the morphological characterization of the fruits, highly significant differences were observed for: L, DS and DM, while the DI did not present significant differences, as did the number of seeds per fruit. The germination percentage presented significant differences, the highest germination percentage was obtained in KAKA2, (66%), while in KAKA9 10% was obtained. Among the germination speed indexes (IVG) of each batch, there were significant differences, KAKA2 presented an IVG of 2.33 at 14 days while the lowest index was for KAKA9 (0.35). A marked difference was observed in the length of the Cariniana estrellensis fruits, as well as in the upper and lower diameter. The germination percentage and the IVG presented values still considered low.
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