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| Format: | Artículo científico |
| Language: | en |
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Academia Brasileira de Ciências
2014
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| Online Access: | https://www.redalyc.org/articulo.oa?id=32732907041 |
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Table of Contents:
- Photosynthetic metabolism and quality of Eugenia pyriformis Cambess. seedlings on substrate function and water levels SILVANA P. Q. SCALON TATIANE S. JEROMINI ROSILDA M. MUSSURY DAIANE M. DRESCH Multidisciplinaria (Ciencias Naturales y Exactas) uvaia Cerrado Myrtaceae seedling production The aim of this research was to evaluate the quality and photosynthetic metabolism of “uvaia” seedlings (Eugenia pyriformis Cambess.) on different substrates and water regimes. The seeds were sown in tubes of 50 x 190 mm in the following substrates: Sand (S), Latosol + Sand (L + S) (1:1), Latosol + Sand + Semi Decomposed Poultry Litter (L + S1 + PL) ( 1:1:0.5), Latosol + Sand + Semi Decomposed Poultry Litter (L + S2 + PL) (1:2:0.5), Latosol + Bioplant® (L + B) (1:1), and the water levels assessed were 50, 75 and 100% of water retention capacity. At 60, 90, 120 and 150 days the seedlings were evaluated according to their chlorophyll index, leaf area (cm2) and Dickson Quality Index (DQI) and at 150 days their internal concentration of carbon (mol m-2 s-1), stomatal conductance (mol m-2 s-1), transpiration rate (mmol m-2 s-1), photosynthesis (μmol m-2 s-1) and efficiency of water use (μmol de CO2 / mmol de H2O). Until their 150th days, the seedlings had higher quality and photosynthetic metabolism when cultured with substrates containing latosol + sand + poultry litter on the two variations assessed and water retention capacity of 50%. 2014 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32732907041 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.4 Vol.86