GERMINAÇÃO DE SEMENTES DE Vochysia bifalcata EM DIFERENTES SUBSTRATOS E TEMPERATURAS

Rickli, Helena Cristina; Nogueira, Antônio Carlos; Koehler, Henrique Soares; Zuffellato-Ribas, Kátia Christina

doi:10.5380/rf.v44i4.33688

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…Studies report the infl uence of fungi in germination tests of forest seeds (Rickli et al, 2014;Berghetti et al, 2015;Pinheiro et al, 2016), with the most common ones being Aspergillus, Penicillium, Trichoderma, and Rizhopus, similar to those identifi ed in los of O. discolor. In S. pulcherrimum, the endophytic fungi were responsible for the low vigor of the lots, which presented germination percentages around 20% (Santos et al, 2020).…”

Section: Discussionmentioning

confidence: 86%

TECHNOLOGICAL PARAMETERS OF SEEDS APPLIED TO THE SELECTION OF SUPERIOR MOTHER TREES FROM Ormosia discolor SPRUCE EX BENTH

et al. 2021

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The study on the native species of fast growth and nodulation capacity, Ormosia discolor, intends to conserve genetic resources and make available seed lots of high vigor for seed orchards. This work evaluates the physical and physiological characteristics of seeds from 20 O. discolor trees as a subsidy for selecting superior mother trees. Twenty matrices selected from a population in the state of Amazonas were inventoried. Physical tests were performed on the seeds collected, including water content, biometrics, the weight of one thousand seeds, and coat permeability test. For vigor estimates and classification regarding seed storage, the seeds were frozen for five months. The germination test was carried out at a constant temperature of 30 °C. It was used a completely randomized design consisting of 20 mother trees, 4 replicates, and 25 seeds per plot. The germination characteristics evaluated were germination percentage, speed index, mean germination time, and synchronization index. Cut seeds are more efficient for determining water content. All biometric variables are representative for the selection of vigorous lots, with emphasis on geometric diameter, surface area, and sphericity of seeds. Species seeds were classified as orthodox and as having physical dormancy. The protrusion of the primary root is the best morphological characteristic for evaluating germination in the laboratory. The mother trees 7, 16, and 10 showed superior characteristics for dendrometric and technological data, being indicated for marking, phenological monitoring, and planting.

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Section: Discussionmentioning

confidence: 86%

TECHNOLOGICAL PARAMETERS OF SEEDS APPLIED TO THE SELECTION OF SUPERIOR MOTHER TREES FROM Ormosia discolor SPRUCE EX BENTH

et al. 2021

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“…Rodrigues et al (1999) en Río Claro, Brasil, obtuvieron germinación de 93 % de semillas de este género, a una temperatura de 25 °C, dejándolas a luz u oscuridad natural. Rickli et al (2014) evaluaron la germinación de V. bifalcata en laboratorio a diferentes temperaturas y sustratos y encontraron que el papel secante y la vermiculita, a temperatura de 25 °C, dan como resultado mayor germinación, de 70 y 73 % respectivamente. González (1991) reporta 59 y 81% de germinación de semillas de V. hondurensis y V. ferruginea, respectivamente, en bosques de Costa Rica.…”

Section: Discussionunclassified

Tratamientos pregerminativos y germinación de semillas de Vochysia lehmannii en los llanos orientales de Colombia

Ortiz

Torres-Cubides

González

et al. 2022

rev.investig.agrar.ambient.

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Contextualización: Vochysia lehmannii es una especie forestal nativa y de importancia ecológica en las sabanas orientales de Colombia, es utilizada con fines de ornamentación, madera, sus semillas tienen usos alimenticios y medicinales. Vacío de conocimiento: principalmente crece de manera silvestre debido a la falta de conocimiento científico sobre su germinación, particularmente acerca de la sincronía y factores ambientales que la influyen. Propósito: en este trabajo se evalúan tratamientos disponibles en la región para identificar el que logre mayor porcentaje de germinación de forma sincrónica. Metodología: En la Vereda La Peral del Municipio de Paz de Ariporo, Casanare, Colombia se estableció un diseño experimental con dos factores: sustrato y tratamientos pregerminativos. Como sustratos se utilizó tierra abonada y arena de río, y como tratamientos pregerminativos: lijado, corte e inmersión en agua caliente. Resultados y conclusiones: se obtuvo el mayor porcentaje de germinación y menor tiempo de latencia de 80% y 7 respectivamente como utilizando tierra abonada y corte de la semilla con diferencias significativas (P<0,01) de los demás tratamientos, sin embargo, persiste asincronía en la germinación.

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Effect of Different Temperatures on the Germination of Callisthene major (Vochysiaceae)

et al. 2020

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Knowledge of environmental conditions for seed germination and seedling formation of forest species is essential. The objective of this work is to evaluate the germination of Callisthene major seeds under laboratory conditions using six different temperatures (20, 25, 30, 35, 20-30 and 25-35 °C) and germitest paper (on and between paper). A completely randomized design was used with four replicates of 25 seeds per experimental unit. The variables evaluated were germination (%), germination speed index (GSI), average germination time (AGT) in days and normal seedlings. The results indicated that the species has a high germination index (above 94%) for all tested substrates and temperatures; however, the highest germination vigor (GSI and AGT) was obtained by alternating the temperature between 25-35 °C with the substrate on paper.

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GERMINAÇÃO DE SEMENTES DE Vochysia bifalcata EM DIFERENTES SUBSTRATOS E TEMPERATURAS

Cited by 4 publications

References 12 publications

TECHNOLOGICAL PARAMETERS OF SEEDS APPLIED TO THE SELECTION OF SUPERIOR MOTHER TREES FROM Ormosia discolor SPRUCE EX BENTH

TECHNOLOGICAL PARAMETERS OF SEEDS APPLIED TO THE SELECTION OF SUPERIOR MOTHER TREES FROM Ormosia discolor SPRUCE EX BENTH

Tratamientos pregerminativos y germinación de semillas de Vochysia lehmannii en los llanos orientales de Colombia

Effect of Different Temperatures on the Germination of Callisthene major (Vochysiaceae)

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