Physiological and anatomical responses of the assai palm and king palm to shading levels
The present work involves two heart-of-palm producing species: assai palm and king palm aiming to measure the agronomic and physiological characters, under three luminosity conditions, in order to study the palm anatomy and to evaluate the two species performance in sight to direct the producer rega...
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| Published in: | Acta horticulturae no. 1003; pp. 233 - 237 |
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| Main Authors: | , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
International Society for Horticultural Science
01-01-2013
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | The present work involves two heart-of-palm producing species: assai palm and king palm aiming to measure the agronomic and physiological characters, under three luminosity conditions, in order to study the palm anatomy and to evaluate the two species performance in sight to direct the producer regarding the better luminosity under which the species should be planted. Thirty six-year-old palms were evaluated, and three treatments were established: full sun, half shade and shade. Agronomic and physiological evaluations were made. Mean, standard deviation, the variation coefficient and the maximum and minimum values were calculated. The results showed that, for assai palms, stem diameter and palm girth (1, 2 and 3) were larger under the HS environment. According to the Tukey test, there was no significant difference among the studied parameters, showing a trend to stabilization in the existing agronomic measures, regardless the luminosity. The physiological variables photosynthesis, stomatal conductance and transpiration did not present difference among treatments. According to the results found there were no significant differences among the studied characters, this can be due to restricted genetic base. Ultrastructural and histological analysis showed that there was difference in both studied species, showing that cultivated plants in full sun have larger parenchyma and higher stomatal frequency. |
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| Bibliography: | http://www.actahort.org/books/1003/1003_34.htm |
| ISSN: | 0567-7572 2406-6168 |
| DOI: | 10.17660/actahortic.2013.1003.34 |