scholarly journals Sicklepod (Senna obtusifolia (L.) H. S. Irwin & Barneby) “Getting sleepy?”

2021 ◽  
pp. 1-26
Author(s):  
Lynn M. Sosnoskie ◽  
Sandy Steckel ◽  
Lawrence E. Steckel
Keyword(s):  
Senna Obtusifolia ◽  
Henry Wadsworth Longfellow

There is a Reaper, whose name is Death, And, with his sickle keen, He reaps the bearded grain at a breath, And the flowers that grow between. – Henry Wadsworth Longfellow, The Reaper and the Flowers

Absorption, Translocation, and Metabolism of14C-Glufosinate in Glufosinate-Resistant Corn, Goosegrass (Eleusine indica), Large Crabgrass (Digitaria sanguinalis), and Sicklepod (Senna obtusifolia)

Weed Science ◽  
2009 ◽  
Vol 57 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Wesley J. Everman ◽  
Cassandra R. Mayhew ◽  
James D. Burton ◽  
Alan C. York ◽  
John W. Wilcut
Keyword(s):  
Weed Species ◽  
Digitaria Sanguinalis ◽  
Eleusine Indica ◽  
Leaf Stage ◽  
Senna Obtusifolia ◽  
Harvest Timing ◽  
Treated Leaf ◽  
Harvest Intervals ◽  
Corn Plants ◽  
Large Crabgrass

Greenhouse studies were conducted to evaluate14C-glufosinate absorption, translocation, and metabolism in glufosinate-resistant corn, goosegrass, large crabgrass, and sicklepod. Glufosinate-resistant corn plants were treated at the four-leaf stage, whereas goosegrass, large crabgrass, and sicklepod were treated at 5, 7.5, and 10 cm, respectively. All plants were harvested at 1, 6, 24, 48, and 72 h after treatment (HAT). Absorption was less than 20% at all harvest intervals for glufosinate-resistant corn, whereas absorption in goosegrass and large crabgrass increased from approximately 20% 1 HAT to 50 and 76%, respectively, 72 HAT. Absorption of14C-glufosinate was greater than 90% 24 HAT in sicklepod. Significant levels of translocation were observed in glufosinate-resistant corn, with14C-glufosinate translocated to the region above the treated leaf and the roots up to 41 and 27%, respectively. No significant translocation was detected in any of the weed species at any harvest timing. Metabolites of14C-glufosinate were detected in glufosinate-resistant corn and all weed species. Seventy percent of14C was attributed to glufosinate metabolites 72 HAT in large crabgrass. Less metabolism was observed for sicklepod, goosegrass, and glufosinate-resistant corn, with metabolites composing less than 45% of detectable radioactivity 72 HAT.

scholarly journals Phytotoxic potential of Senna occidentalis and Senna obtusifolia

2010 ◽  
Vol 32 (3) ◽  
Author(s):  
Marize Terezinha Lopes Pereira Peres ◽  
Ana Carina da Silva Cândido ◽  
Marilia Bisacotti Bonilla ◽  
Odival Faccenda ◽  
Sônia Corina Hess
Keyword(s):  
Senna Obtusifolia

scholarly journals Effects of Different Pretreatments and Seed Coat on Dormancy and Germination of Seeds of Senna obtusifolia (L.) H.S. Irwin & Barneby (Fabaceae)

2016 ◽  
Vol 8 (2) ◽  
pp. 77
Author(s):  
Stephen I. Mensah ◽  
Chimezie Ekeke
Keyword(s):  
Sulfuric Acid ◽  
Seed Dormancy ◽  
Water Uptake ◽  
Seed Coat ◽  
Critical Factor ◽  
Potassium Nitrate ◽  
Ex Situ ◽  
Mechanical Resistance ◽  
Physical Dormancy ◽  
Senna Obtusifolia

<p class="1Body">The seed dormancy of <em>Senna obtusifolia</em> was investigated through various methods, namely pretreatments in concentrated sulfuric acid, 2% potassium nitrate (KNO<sub>3</sub>), 99% ethanol, 99% methanol, and in hydrogen perioxide; examination of the seed coverings; and the determination of water uptake by the seeds in order to ascertain the most effective technique for breaking dormancy and also determine the dormancy type. The results showed that sulfuric acid treatment recorded the highest germination (100%); followed by 2% hydrogen peroxide treatment (24%) in 15minutes immersion. The methanol and ethanol pretreatments gave 18.33% and 16.5% germinations respectively. Pretreatment in 2% potassium nitrate gave the lowest germination (8.50%), while the intact seeds of <em>S. obtusifiolia</em> (control) gave 0% germination. The anatomy of the seed coat indicated the presence of hard, thickened and specialized cells of cuticle, macrosclereids, osteoscereids, and disintegrated parenchyma layers. The water uptake of intact seeds was low (13.5%) after 24 hr imbibitions. These findings revealed that the seed coat acts as barrier to germination by preventing water absorption, possibly gaseous diffusion in and out of the seed and conferring mechanical resistance to the protrusion of embryo. Pretreatments, such as immersion in H<sub>2</sub>SO<sub>4 </sub>will soften the seed coat and permit germination. Seed dormancy in <em>S. obtusifolia </em>can be considered of physical nature and classified as physical dormancy. The results obtained in this study may serve as useful information in the production and improvement of <em>S. obtusifolia </em>seedlings, as knowledge on seed dormancy and germination is a critical factor and requirements to the understanding of the propagation of this plant either in situ or ex-situ, in view of the economic potentials/attributes of this species.</p>

scholarly journals Pharmacological Activities of Senna obtusifolia Linn.: A Medicinal Plant of Bangladesh

2015 ◽  
Vol 17 (2) ◽  
pp. 182-186 ◽  
Author(s):  
Md Anisuzzaman ◽  
Md Qamrul Ahsan ◽  
Md Ruhul Kuddus ◽  
Mohammad Abdur Rashid
Keyword(s):  
Plant Extract ◽  
Pharmaceutical Journal ◽  
Anxiolytic Activity ◽  
Hypotonic Solution ◽  
Pharmacological Activities ◽  
Senna Obtusifolia ◽  
Inhibitory Potential ◽  
Dose Dependent ◽  
Crude Methanol Extract

The crude methanol extract of seed of Senna obtusifolia Linn. has been investigated for anxiolytic, antiatherothrombosis, membrane stabilizing and alpha-amylase inhibitory activities. The anxiolytic activity was examined in mice by using the hole cross and open field test (OFT). The anti-atherothrombosis activity was evaluated and compared with that of standard streptokinase. The membrane stabilizing activity was tested by using hypotonic solution- and heat-induced hemolysis of human erythrocyte. The plant extract was also assessed for anti-diabetic activity through in vitro ?-amylase inhibitory potential. The ?-amylase inhibitory activity of S. obtusifolia was measured using the starch-iodine method. The crude extract of S. obtusifolia showed moderate anxiolytic activity. In the in-vitro anti-atherothrombosis test, the extract exhibited mild activity as compared to the standard, streptokinase (81.53%). In membrane stabilizing activity test, the plant extract at 1.0 mg/ml inhibited the heat-induced hemolysis of RBCs by 56.37% whereas the standard acetyl salicylic acid (ASA) demonstrated 71.36% inhibition of hemolysis. Our results revealed that the extract produced dose-dependent prevention of digestion of carbohydrates by inhibiting ?-amylase. These findings demonstrated that S. obtusifolia may be a good candidate for further analysis because of its effective pharmacological properties. DOI: http://dx.doi.org/10.3329/bpj.v17i2.22338 Bangladesh Pharmaceutical Journal 17(2): 182-186, 2014

scholarly journals Proposta metodológica para análise da ocorrência de sinergismo e efeitos potencializadores entre aleloquímicos

2006 ◽  
Vol 24 (3) ◽  
pp. 607-610 ◽  
Author(s):  
A.P.S. Souza Filho
Keyword(s):  
Mimosa Pudica ◽  
Senna Obtusifolia

Os procedimentos envolvendo a análise de sinergismo entre aleloquímicos têm envolvido, basicamente, a utilização de concentrações fixas. Neste trabalho, propõe-se um modelo teórico envolvendo quatro possibilidades de respostas: uma que demonstra a existência de sinergismo (possibilidade A do modelo); outra que revela a inexistência de sinergismo (possibilidade B do modelo); e duas que revelam que uma substância potencializa o efeito de outra (possibilidades C e D do modelo). Para efeito de teste do modelo, utilizaram-se duas substâncias químicas (ácido 3,4,5-trimetoxibenzóico [S1] e ácido verátrico [S2]) isoladas das folhas de Parkia pendula, com atividade alelopática já comprovada, nas seguintes proporções: S1 pura, S2 pura e combinações de S1 e S2, nas seguintes proporções: 3:1, 1:1 e 1:3. Como plantas indicadoras foram utilizadas as plantas daninhas malícia (Mimosa pudica) e mata-pasto (Senna obtusifolia). Os resultados, analisados em relação às quatro possibilidades estabelecidas no modelo teórico, permitiram inferir a inexistência de efeitos sinérgicos entre as duas substâncias testadas. As variações entre os resultados obtidos e a possibilidade B do modelo podem ser atribuídas ao potencial inibitório da substância e à sensibilidade das espécies receptoras às substâncias testadas.

scholarly journals Atividade alelopática do filtrado de cultura produzido por Fusarium solani

2007 ◽  
Vol 25 (1) ◽  
pp. 227-230 ◽  
Author(s):  
A.P.S. Souza Filho ◽  
M.L.R. Duarte
Keyword(s):  
Fusarium Solani ◽  
Mimosa Pudica ◽  
Senna Obtusifolia

As plantas daninhas se constituem no principal problema a impor limitação à exploração da agropecuária nas áreas tropicais. Entretanto, o controle químico dessas plantas tem gerado insatisfações de ordem social, quer porque contaminam as fontes de recursos naturais ou por comprometerem a qualidade dos alimentos da dieta dos animais, em geral, e dos humanos, em particular. Os objetivos deste trabalho foram identificar e caracterizar a atividade alelopática do filtrado de cultura produzido pelo fungo Fusarium solani f. sp. pipers. Foram avaliados os efeitos das toxinas, nas concentrações de 1,0 e 4,0%, sobre a germinação de sementes e o desenvolvimento da radícula e do hipocótilo das plantas daninhas malícia (Mimosa pudica) e mata-pasto (Senna obtusifolia). Os resultados mostraram presença de atividade alelopática inibitória, com variações de acordo com a concentração e a planta receptora. A intensidade dos efeitos inibitórios induzidos pelo extrato esteve positivamente associada à concentração, com efeitos mais intensos verificados a 4,0%. Independentemente da concentração e do bioensaio, a espécie malícia se mostrou mais sensível aos efeitos do filtrado da cultura. O desenvolvimento da radícula foi o fator da planta mais intensamente inibido. Os resultados indicam a existência de potencial de utilização da toxina produzida pelo fungo, como fonte alternativa no controle de plantas daninhas, o que justifica estudos mais avançados.

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