scholarly journals Effect of Aqueous Extract of Biochar on Germination and Seedling Growth of Lettuce (Lactuca sativa L.)

10.5109/22048 ◽  
2012 ◽  
Vol 57 (1) ◽  
pp. 55-60
Author(s):  
Taek-Keun Oh ◽  
Yoshiyuki Shinogi ◽  
Jiro Chikushi ◽  
Yong-Hwan Lee ◽  
BongSu Choi
Keyword(s):  
Aqueous Extract ◽  
Seedling Growth ◽  
Lactuca Sativa ◽  
Lactuca Sativa L

Protective Effect of Purple Lettuce (Lactuca sativa L.) Aqueous Extract on Physiological Quality of Lettuce Seedlings Subject to Salt Stress

2018 ◽  
Vol 24 (6) ◽  
pp. 1-13
Author(s):  
Cristiane Deuner ◽  
Carolina Borges ◽  
César Castellanos ◽  
Sidnei Deuner ◽  
Francisco Villela ◽  
...  
Keyword(s):  
Salt Stress ◽  
Protective Effect ◽  
Aqueous Extract ◽  
Lactuca Sativa ◽  
Lactuca Sativa L ◽  
Physiological Quality

Capsaicinoids from hot pepper (Capsicum annuum L.) and their phytotoxic effect on seedling growth of lettuce (Lactuca sativa L.)

2018 ◽  
Vol 34 (11) ◽  
pp. 1597-1601 ◽  
Author(s):  
Rongrong Wang ◽  
Yang Liu ◽  
Shiwei Sun ◽  
Yueyue Si ◽  
Xiaohong Liu ◽  
...  
Keyword(s):  
Capsicum Annuum ◽  
Seedling Growth ◽  
Lactuca Sativa ◽  
Hot Pepper ◽  
Capsicum Annuum L ◽  
Lactuca Sativa L ◽  
Phytotoxic Effect

scholarly journals Allelopathy of Miconia spp. (Melastomataceae) in Lactuca sativa L. (Asteraceae)

2015 ◽  
Vol 7 (12) ◽  
pp. 151
Author(s):  
Marcos Aurélio Figueiredo Dos Santos ◽  
Maria Arlene Pessoa Da Silva ◽  
Antônio Carlito Bezerra Dos Santos ◽  
Sarah Ribeiro Alencar ◽  
Isabella Hevily Silva Torquato ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Aqueous Extract ◽  
Chromosomal Aberrations ◽  
Lactuca Sativa ◽  
Condensed Tannins ◽  
Leaf Extract ◽  
Cytotoxic Effects ◽  
Color Changes ◽  
Lactuca Sativa L ◽  
Root Necrosis

<p>The aim of this work is to study the effects of the brute aqueous extract (BAE) of seven species of the genus <em>Miconia</em> occurring in the Chapada do Araripe-CE on <em>Lactuca sativa</em>, in addition to identifying the classes of secondary metabolites present in the extracts. The treatments consisted of four concentrations of leaf extract (25, 50, 75 and 100%), in addition to a control (0%) of distilled water, with five replicates each in a totally randomized experiment design layout for seven days. The following were assessed: number of germinated seeds, germination speed index (GSI), caulicle and radicle root length of the seedlings, occurrence of radical root necrosis, changes in the mitotic index and occurrence of chromosomal aberrations. The classes of secondary metabolites present in the extracts were identified through color changes and/or formation of precipitation. The brute aqueous extract of the leaves of <em>M. albicans</em>, <em>M. alborufescens</em> and <em>M. stenostachya </em>inhibited the germination of lettuce. All the BAEs of <em>Miconia</em> spp. had an adverse effect on the growth of the caulicle and radicle root of <em>L. sativa</em>. The extracts of <em>M. albicans</em>, <em>M. ibaguensis</em>, <em>M. lingustroides</em> and <em>M. stenostachya </em>were cytotoxic for the lettuce seedlings. Chromosomal aberrations were observed in all tested extracts. The metabolites found were hydrolysable and condensed tannins, flavonoids, flavones, flavanonols, chalcones, aurones and alkaloids. The tested species of <em>Miconia</em> showed inhibitory allelopathic activity within the parameters tested. The classes of secondary metabolites found could be responsible for the allelopathic and cytotoxic effects observed.</p>

scholarly journals Acute toxicity of water and aqueous extract of soils from Champotón river in Lactuca sativa L.

2018 ◽  
Vol 5 ◽  
pp. 593-597 ◽  
Author(s):  
Carlos A. Chan-Keb ◽  
Claudia M. Agraz-Hernández ◽  
Roman A. Perez-Balan ◽  
Mónica I. Gómez-Solano ◽  
Teresita D.N.J. Maldonado-Montiel ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Aqueous Extract ◽  
Lactuca Sativa ◽  
Lactuca Sativa L

scholarly journals Allelopathic effects of aqueous extract of leaves and roots of Luetzelburgia auriculata (Allemo) Ducke on seeds germination and initial growth of lettuce (Lactuca sativa L.)

2018 ◽  
Vol 13 (13) ◽  
pp. 635-643 ◽  
Author(s):  
Erika do Nascimento Fernandes PINTO ◽  
Jacob Silva SOUTO ◽  
Leonardo Francisco de Assis PEREIRA ◽  
Cesar Henrique Alves BORGES ◽  
Tassia Rayane Nascimento FERNANDES
Keyword(s):  
Aqueous Extract ◽  
Lactuca Sativa ◽  
Initial Growth ◽  
Lactuca Sativa L ◽  
Allelopathic Effects ◽  
Leaves And Roots ◽  
Seeds Germination
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