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1.
Rev. bras. plantas med ; Rev. bras. plantas med;17(4,supl.2): 975-979, 2015. tab
Artículo en Portugués | LILACS | ID: lil-771159

RESUMEN

RESUMO O objetivo do trabalho foi avaliar o desenvolvimento e a produção de óleo essencial de manjericão com a aplicação de adubo foliar em Londrina-PR. O delineamento experimental utilizado foi o de blocos casualizados com três doses de adubo foliar (0, 2 e 4 L.ha-1) e sete repetições. Foram realizadas três colheitas durante o desenvolvimento do experimento. Os cortes ocorreram no início do florescimento, a altura do oitavo nó aos 40, 80 e 120 dias após o transplantio. Avaliou-se a altura, área foliar, produção de massa seca de folhas e rendimento de óleo essencial. A aplicação de 4 L ha-1 do adubo foliar proporcionou os maiores acréscimos na produção de massa seca de folhas e no rendimento de óleo essencial até o segundo corte das plantas de manjericão. A renovação da cultura se faz necessária a partir do terceiro corte.


ABSTRACT The aim was to evaluate the development and production of basil essential oil with the application of foliar fertilizer in Londrina-PR. The experimental design was a randomized block with three doses of foliar fertilizer (0, 2 and 4 L.ha-1) and seven replications. Three harvests were made during the development of the trial. The cuts occurred at flowering, at the height of the eighth node and at 40, 80 and 120 days after the transplanting. We evaluated the height, leaf area, dry matter production of leaves and essential oil yield. The application of 4 L ha-1 foliar fertilizer provided greater rise in production of dry matter of leaves and essential oil yield until the second harvest of basil plants. The renewal of the cultivation is needed from the third cut.


Asunto(s)
Aceites Volátiles/análisis , Ocimum basilicum/clasificación , Estiércol/clasificación , Biomasa
2.
J Fish Biol ; 81(4): 1315-26, 2012 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22957872

RESUMEN

This study provides the first detailed information on the reproductive biology of the smooth butterfly ray Gymnura micrura. A total of 905 individuals were sampled, 377 of which were used for the reproductive study. Juveniles accounted for 75% of the sample, but all life cycle stages were present in the study area. The disc width at which 50% were mature (W(D50))was estimated at 269 and 405 mm for males and females, respectively. The W(D50V) (based on the onset of vitellogenesis) was estimated at 359 mm. Uterine fecundity (mean ±s.d. = 3·8 ± 1·3; range: 1-6) was positively correlated with female size. A 3564% gain in mean wet mass was observed from egg to full-term embryo in utero. Size at birth ranged from 135 to 175 mm W(D) (19·5 to 55·0 g), with a mean of 165·1 mm W(D) (43·3 g). The embryo sex ratio was not significantly different from 1:1. The ovaries of pregnant females were undergoing vitellogenesis during gestation, with females ready to ovulate soon after parturition. Gymnura micrura may have an asynchronous reproductive cycle, with females reproducing continuously throughout the year.


Asunto(s)
Reproducción/fisiología , Rajidae/fisiología , Animales , Tamaño Corporal/fisiología , Embrión no Mamífero/anatomía & histología , Femenino , Gónadas/anatomía & histología , Masculino , Razón de Masculinidad , Maduración Sexual/fisiología , Rajidae/anatomía & histología
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