COMPARISONS BETWEEN TWO ECONOMICALLY VALUABLE FOREST SPECIES (Eucalyptus grandis AND Pinus taeda) IN RELATION TO SEED BEHAVIOUR UNDER CONTROLLED DETERIORATION
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidade Federal de Viçosa
2011
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| _version_ | 1876470466594471936 |
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| author | Jussara Bertho Fantinatti |
| author_facet | Jussara Bertho Fantinatti |
| contents | COMPARISONS BETWEEN TWO ECONOMICALLY VALUABLE FOREST SPECIES (Eucalyptus grandis AND Pinus taeda) IN RELATION TO SEED BEHAVIOUR UNDER CONTROLLED DETERIORATION Jussara Bertho Fantinatti Roberto Usberti Agrociencias Forest species Seed storability Viability equation The objectives of this work were to analyze seed behaviour under controlled deterioration and estimate viability equations for forest species Eucalyptus grandis and Pinus taeda. Desired moisture content levels were achieved from initial values after either rehydration over water or drying over silica gel, both at 25 ºC. Seed sub samples with 8 moisture contents each for E. grandis (1.2 to 18.1%, initial value of 11.3%) and P. taeda (1.5 to 19.5%, initial value of 12.9%) were sealed in laminate aluminium-foil packets and stored in incubators maintained at 40, 50 and 65 ºC. The seeds from these species exhibited true orthodox and sub-orthodox storage behaviour, respectively, however E. grandis showed higher seed storability, probably due to a different seed chemical composition. Lowest moisture content limits estimated for application of the viability equations at 65 ºC were 4.9 and 4.1 mc for E. grandis and P. taeda, on equilibrium with ±20% RH. The viability equation estimated quantified the response of seed longevity to storage environment well with K E = 9.661 and 8.838; C W = 6.467 and 5.981; C H = 0.03498 and 0.10340; C Q = 0.0002330 and 0.0005476, for E. grandis and P. taeda, respectively. 2011 artículo científico 0100-6762 https://www.redalyc.org/articulo.oa?id=48818717009 en http://www.redalyc.org/revista.oa?id=488 Revista Árvore application/pdf Universidade Federal de Viçosa Revista Árvore (Brasil) Num.1 Vol.35 |
| format | Artículo científico |
| id | redalyc_48818717009 |
| institution | Redalyc |
| language | en |
| publishDate | 2011 |
| publisher | Universidade Federal de Viçosa |
| spellingShingle | COMPARISONS BETWEEN TWO ECONOMICALLY VALUABLE FOREST SPECIES (Eucalyptus grandis AND Pinus taeda) IN RELATION TO SEED BEHAVIOUR UNDER CONTROLLED DETERIORATION Jussara Bertho Fantinatti Agrociencias Forest species Seed storability Viability equation COMPARISONS BETWEEN TWO ECONOMICALLY VALUABLE FOREST SPECIES (Eucalyptus grandis AND Pinus taeda) IN RELATION TO SEED BEHAVIOUR UNDER CONTROLLED DETERIORATION Jussara Bertho Fantinatti Roberto Usberti Agrociencias Forest species Seed storability Viability equation The objectives of this work were to analyze seed behaviour under controlled deterioration and estimate viability equations for forest species Eucalyptus grandis and Pinus taeda. Desired moisture content levels were achieved from initial values after either rehydration over water or drying over silica gel, both at 25 ºC. Seed sub samples with 8 moisture contents each for E. grandis (1.2 to 18.1%, initial value of 11.3%) and P. taeda (1.5 to 19.5%, initial value of 12.9%) were sealed in laminate aluminium-foil packets and stored in incubators maintained at 40, 50 and 65 ºC. The seeds from these species exhibited true orthodox and sub-orthodox storage behaviour, respectively, however E. grandis showed higher seed storability, probably due to a different seed chemical composition. Lowest moisture content limits estimated for application of the viability equations at 65 ºC were 4.9 and 4.1 mc for E. grandis and P. taeda, on equilibrium with ±20% RH. The viability equation estimated quantified the response of seed longevity to storage environment well with K E = 9.661 and 8.838; C W = 6.467 and 5.981; C H = 0.03498 and 0.10340; C Q = 0.0002330 and 0.0005476, for E. grandis and P. taeda, respectively. 2011 artículo científico 0100-6762 https://www.redalyc.org/articulo.oa?id=48818717009 en http://www.redalyc.org/revista.oa?id=488 Revista Árvore application/pdf Universidade Federal de Viçosa Revista Árvore (Brasil) Num.1 Vol.35 |
| title | COMPARISONS BETWEEN TWO ECONOMICALLY VALUABLE FOREST SPECIES (Eucalyptus grandis AND Pinus taeda) IN RELATION TO SEED BEHAVIOUR UNDER CONTROLLED DETERIORATION |
| topic | Agrociencias Forest species Seed storability Viability equation |
| url | https://www.redalyc.org/articulo.oa?id=48818717009 |