Articles
MORPHOLOGICAL AND CHEMICAL CHARACTERIZATION OF THE BRAZILIAN GINSENG [PFAFFIA GLOMERATA (AMARANTHACEAE)]
Article number
860_12
Pages
97 – 100
Language
English
Abstract
The aim in the present study was to characterize accessions of a Pfaffia glomerata germplasm bank, using morphological and chemical descriptors.
Eight populations were collected at Paraná and São Paulo (Brazil) state areas.
The following descriptors were evaluated: height, main root length, node length, stem number and diameter, plant habit, main root diameter, number of secondary roots, aerial part dry and fresh matter, root dry and fresh matter, harvesting index, stem, root and petiole color, hairiness, leaf and leaf apex shape, width leaf base, and ß-ecdysone content.
Root color varied from yellow (six accessions) to pale yellow (two accessions). Leaf apex and base shape were acute and acuminate (apex) and oblique (base) in 72.5% of individuals.
Around 57.5% of individuals presented hairy leaves.
Average height was 2.16 m and plants showed around 4 stems per plant.
A positive and significant correlation (0.912) was found among root dry matter and main root diameter.
This increase on root dry matter was correlated to the root diameter and not to the root length.
The average content of ß-ecdysone in all accessions was 0.45%, with variations among and within accessions.
The first two components of Principal Component Analysis were responsible for 99.5% of total variation, being aerial part fresh matter of and root fresh matter responsible for most of these variation.
The graphical dispersion based on PCA analysis was able to discriminate four groups of accessions.
It can be concluded that there is a large variability among and within population of P. glomerata, which can explain the large adaptive capacity of this species.
Also, this variation can be used for further breeding research for a higher content of ß-ecdysone in P. glomerata roots.
Eight populations were collected at Paraná and São Paulo (Brazil) state areas.
The following descriptors were evaluated: height, main root length, node length, stem number and diameter, plant habit, main root diameter, number of secondary roots, aerial part dry and fresh matter, root dry and fresh matter, harvesting index, stem, root and petiole color, hairiness, leaf and leaf apex shape, width leaf base, and ß-ecdysone content.
Root color varied from yellow (six accessions) to pale yellow (two accessions). Leaf apex and base shape were acute and acuminate (apex) and oblique (base) in 72.5% of individuals.
Around 57.5% of individuals presented hairy leaves.
Average height was 2.16 m and plants showed around 4 stems per plant.
A positive and significant correlation (0.912) was found among root dry matter and main root diameter.
This increase on root dry matter was correlated to the root diameter and not to the root length.
The average content of ß-ecdysone in all accessions was 0.45%, with variations among and within accessions.
The first two components of Principal Component Analysis were responsible for 99.5% of total variation, being aerial part fresh matter of and root fresh matter responsible for most of these variation.
The graphical dispersion based on PCA analysis was able to discriminate four groups of accessions.
It can be concluded that there is a large variability among and within population of P. glomerata, which can explain the large adaptive capacity of this species.
Also, this variation can be used for further breeding research for a higher content of ß-ecdysone in P. glomerata roots.
Publication
Authors
R.B.N. Alves, R.F. Vieira, P.S. Pereira, B.W. Bertoni, S.C. França, A.M.S. Pereira
Keywords
genetic resources, ß-ecdysone, morphological descriptors
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