Desiccation sensibility in seeds of six fruits native
The aim of this work was to study the sensitivity desiccation level for six native fruit seeds. The work was carried out at Plant Physiology Laboratory, UTFPR - Câmpus Dois Vizinhos, Paraná State, Brazil. It was used seeds physiologically mature of fruits Brazilian native cerejeira-da-mata (Eugenia involucrata DC), guabijuzeiro (Myrcianthes pungens (Berg) Legrand), sete capoteiro (Campomanesia guazumifolia (Cambess.) O.Berg), pitangueira (Eugenia uniflora L.), jabuticabeira híbrida (Plinia cauliflora Mart.) e jabuticabeira de cabinho (Plinia trunciflora O.Berg). The fruits were collected and the seeds were removed and dried in shade by 24 hours. After the seeds were imbibed in distilled water, it remaining in this condition until constant weight. Then the seeds were placed in Petri dishes and it put for dehydration slow in B.O.D chamber at 25 °C during 0 (T1), 6 (T2), 24 (T3), 48 (T4), 72 (T5) 96 (T6), 120 (T7), 144 (T8), 168 (T9 ), 192 (T10) 216 (T11) and 240 (T12) hours. Posterior each time, the seeds were sown in plastic trays, with sand as substrate. The experimental design was completely randomized, with 12 treatments and 4 replications of one hundred seeds by plot. After 60 days of first germinated seed, the germination (%), index speed emergence, germination time and cumulative germination were evaluated. The greater and more rapid moisture content reduction decreased the viability of guabijuzeiro jabuticaba híbrida and cabinho seed. However, new studies will be necessary to assess the seed viability on condition of lower moisture content.
| Main Authors: | , , , , , |
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| Format: | Digital revista |
| Language: | por |
| Published: |
Facultad de Ciencias Agrarias y Forestales de la Universidad Nacional de La Plata
2018
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| Online Access: | https://revistas.unlp.edu.ar/revagro/article/view/7315 |
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