seleção e melhoramento do timbó: ii - estudo de uma população de 153 plantas de timbó macaquinho - derris nicou (benth.)
Clicks: 89
ID: 186072
1960
Article Quality & Performance Metrics
Overall Quality
Not rated
Combines reader engagement with the AI quality analysis. This
article has not been analysed, so there is no overall score —
reader engagement is measured and shown alongside.
Reader Engagement
Popular Article
26.4
/100
89 views
6 readers
AI Quality Assessment
Not analyzed
Readership in this journal
PopularRanked #164 of 206 articles by views in revista espanola de salud publica
Most read
Least read
Bar heights use a square-root scale. Only the 120 most-read articles are drawn; the journal has 206 in total.
Mint this article as an NFT
Not yet mintedCreate a permanent, verifiable on-chain record of this article on the Scimatic Network. The NFT is held in your Journament account, and you can withdraw it to your own wallet at any time.
5
SUSD
one-off · no wallet required
Abstract
Para fins de seleção foi estudada, no Instituto Agronômico do Norte, uma população de 153 plantas de timbó macaquinho - Derris nicou (Benth.). Depois de colhidas as raízes e postas a secar ao ar, foram analisadas para determinação de umidade, cinzas, extratos totais (etéreo e por gravimetria), rotenona + deguelina (por colorimetria) e rotenona (por gravimetria). Pelo estudo dos dados pôde-se verificar que havia dois grupos distintos de plantas: um constituído por 82 plantas (POPULAÇÃO A) contendo menos de 5% de rotenona nas raízes e outro, com 71 plantas (POPULAÇÃO B), com 9% ou mais de rotenona em suas raízes. Essas populações foram estudadas separadamente. Para um estudo mais detalhado dêsses grupos de plantas também foram calculados o peso líquido das raízes, bem como o rendimento líquido, por planta e em média, em extratos totais, rotenona + deguelina e rotenona. Foram também calculados os teores em deguelina e rotenona contidos nos extratos totais e outros extratos (que não rotenona e deguelina) contidos nos extratos totais e, finalmente, a rotenona contida no conjunto rotenona + deguelina. São apresentados os resultados referentes às melhores plantas selecionadas dessa população. Vários fatôres foram levados em consideração para a separação dessas plantas, tidas como os melhores. Os resultados mostram que mediante adequada multiplicação do material selecionado será possível a instalação de culturas de timbó com elevado rendimento em rotenona.
A population composed of 153 plants of "timbó macaquinho" (Derris nicou) was studied for selection and establishment of high yielding rotenone clones. The roots were air dried and the humidity content determined. Ashes, total extracts, rotenone + degueline and rotenone were determined by chemical analyses. Individual results of the analyses are presented. From the data were calculated the net weight per plant of: a) air dried roots; b) total extracts; c) rotenone + degueline; d) rotenone; e) degueline; f) other extracts. Were also calculated: g) rotenone content in the total extracts; h) degueline content in the total extracts; i) other extracts in the total extracts; j) rotenone content in the rotenone + degueline complex. The results indicated that the population was composed of two distinct groups of plants: a) POPULATION A, with 82 plants of low rotenone content (less than 5%); POPULATION B, with 71 plants of high rotenone content (9% or more). In table 16 are presented the minimum, maximum and mean results for both populations. For the plants of population A the fallowing chief mean results were obtained: 1088g of roots; humidity, 6.88%; air dried roots, 1 005 g; ashes, 4.75%; total extracts, 9.84%; rotenone, 2.60%; degueline, 2.85%. For the plants of population B the chief mean results were as follows: roots, 1001g; humidity, 5.31%; air dried roots, 949g; ashes, 5.24%; total extracts, 28.63%; rotenone, 13.53%; degueline, 10.09%. In population A it was observed approximately the following proportion of extracts, in the total extracts: ¹/4 rotenone, ²/4 degueline and ¹/4 other extracts; in population B the proportions were, approximately, as follows: ³/6 rotenone, ²/6 degueline and ¹/6 other extracts. For both populations various correlation coefficients were calculated and were positively and highly significant (P = .01) those between: a) percentage of total extracts and percentage of rotenone; b) percentage of total extracts and percentage of rotenone + degueline; c) percentage of rotenone + degueline and percentage of rotenone.
A population composed of 153 plants of "timbó macaquinho" (Derris nicou) was studied for selection and establishment of high yielding rotenone clones. The roots were air dried and the humidity content determined. Ashes, total extracts, rotenone + degueline and rotenone were determined by chemical analyses. Individual results of the analyses are presented. From the data were calculated the net weight per plant of: a) air dried roots; b) total extracts; c) rotenone + degueline; d) rotenone; e) degueline; f) other extracts. Were also calculated: g) rotenone content in the total extracts; h) degueline content in the total extracts; i) other extracts in the total extracts; j) rotenone content in the rotenone + degueline complex. The results indicated that the population was composed of two distinct groups of plants: a) POPULATION A, with 82 plants of low rotenone content (less than 5%); POPULATION B, with 71 plants of high rotenone content (9% or more). In table 16 are presented the minimum, maximum and mean results for both populations. For the plants of population A the fallowing chief mean results were obtained: 1088g of roots; humidity, 6.88%; air dried roots, 1 005 g; ashes, 4.75%; total extracts, 9.84%; rotenone, 2.60%; degueline, 2.85%. For the plants of population B the chief mean results were as follows: roots, 1001g; humidity, 5.31%; air dried roots, 949g; ashes, 5.24%; total extracts, 28.63%; rotenone, 13.53%; degueline, 10.09%. In population A it was observed approximately the following proportion of extracts, in the total extracts: ¹/4 rotenone, ²/4 degueline and ¹/4 other extracts; in population B the proportions were, approximately, as follows: ³/6 rotenone, ²/6 degueline and ¹/6 other extracts. For both populations various correlation coefficients were calculated and were positively and highly significant (P = .01) those between: a) percentage of total extracts and percentage of rotenone; b) percentage of total extracts and percentage of rotenone + degueline; c) percentage of rotenone + degueline and percentage of rotenone.
| Reference Key |
mendes1960bragantiaseleo
Use this key to autocite in the manuscript while using
SciMatic Manuscript Manager or Thesis Manager
|
|---|---|
| Authors | ;Luiz O. T. Mendes |
| Journal | revista espanola de salud publica |
| Year | 1960 |
| DOI |
DOI not found
|
| URL | |
| Keywords |
Citations
No citations found. To add a citation, contact the admin at info@scimatic.org
Comments
No comments yet. Be the first to comment on this article.