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Effect of Shadeness Over Chlorophyll Level and Initial Growth of Cariniana legalis PFB - Pesquisa Florestal Brasileira
Rego, Gizelda Maia; Possamai, Edilberto.
Toevaluate the effects of periods of shadeness over the initial growth and concentrations of chlorophyll in Cariniana legalis (Mart.) Kuntze seedlings, an experiment was installed in the research nursery of Embrapa Florestas, at Colombo/PR, Brazil. It was utilized randomized blocks design with five treatments and four replications. The treatments established were: 100% (entire light); 70%, 64%, 44% and 34% of sun radiation. Monitoring of height and diameter were made under intervals of 30 days, from 60o to 180o day after emergency (DAE). Air total dry matter weight of roots, leaf area, chlorophyll a, chlorophyll b and total chlorophyll were measured 180 days after emergency. FAR (Photosynthetic Active Radiation) of 63, 07% led to the best seedling growth...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Forest species; Seedling production; Luminosity; Solar radiation Espécie florestal; Plântulas; Mudas; Luminosidade; Radiação solar..
Ano: 2011 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/210
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Morphological Aspects of Seeds and Seedlings of Jacarandá-da-Bahia PFB - Pesquisa Florestal Brasileira
Rego, Gizelda Maia; Possamai, Edilberto.
The paper objective was to describe and to illustrate the external and internal morphologic aspects of the seed, the germination process external aspects and seedlings phases of jacarandá- da- bahia (Dalbergia nigra VELLOZO) Fr. All. Ex. Bentham Leguminoseae- Papilionoidae). It was found that seed have tegument of bright medium brown color, with kidney shape and symmetricaless form of 7,0 mm to 10,0 mm of length for 5,9 mm to 8,8 mm of width; germination epigeous phanerocotylar, free of tegument, and occur at 30 days after sowing. Seedlings with opposing follicles, of herbaceous consistency and green clear color, with about 1,2 cm of length for 0,8 cm of width. Observations on the seeds internal and external morphology, allied to the ones made on the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Dalbergia nigra; Native species; Brazil Dalbergia nigra; Espécie nativa.
Ano: 2011 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/219
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