Morphology, meiotic index, polynic viability and cytochemistry of Erythrina poeppigiana (Walp.) O. F. Cook
DOI:
https://doi.org/10.6008/CBPC2179-6858.2021.006.0050Keywords:
Fabaceae, Floral biology, MulunguAbstract
Erythrina poeppigiana (Walp.) O. F. Cook. is a tree species belonging to the family Leguminosae (Papilionoideae). It is intercropped in cocoa plantations as it is a deciduous species and has landscaping potential due to the exuberance of the flowers, however there are few studies on this species. The objective of this work was to verify the morphology of Organs vegetative and reproductive organs, meiotic index, pollen viability and cytochemical composition of the pollen grain of E. poeppigiana. They were collected from fertile branches of the species naturally occurring in the rural area of the municipality of Alta Floresta, Mato Grosso. The material was herborized, dehydrated and deposited in the collection of the Herbário da Amazônia Meridional. For analyzes related to reproductive aspects, flowers and flower buds were collected at different stages of development, which were used for floral characterization, meiotic index, cytochemistry and pollen viability. The results show that E. poeppigiana has terminal pseudoracemous inflorescences with showy flowers, a high rate of pollen viability (92,37% - 96,07%) which was in agreement with the high percentage of the meiotic index (90,56%), suggesting stability and meiotic regularity, in addition to having starch and lipid as reserve substances. Reactive dyes from Alexander and 2% acetic carmine are recommended for analysis of pollen viability of the species. The present study reaffirms the occurrence of E. poeppigiana for the flora of the State of Mato Grosso.
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