scholarly journals Allelopathic effect of different accessions of Jatropha curcas on field crops in Bundelkhand Region (U.P.) India

2020 ◽  
Vol 26 (1) ◽  
Author(s):  
Neel Ratan ◽  
Ghan Shyam ◽  
R.K. Gupta ◽  
U.N. Singh
Keyword(s):  
Triticum Aestivum ◽  
Jatropha Curcas ◽  
Linum Usitatissimum ◽  
Raphanus Sativus ◽  
Leaf Extract ◽  
Allelopathic Effect ◽  
Lens Esculenta ◽  
Field Crops ◽  
Maximum Inhibition ◽  
Aqueous Leaf Extract

Allelopathic effect of three accessions of Jatropha curcas on four field crops viz. Triticum aestivum, Raphanus sativus, Linum usitatissimum and Lens esculenta through bioassy was studied in laboratory. The level of inhibition of aqueous leaf extract of J. curcas varied with its accessions and type of tested field crops. The tolerance of the crops was in order of Lens esculenta > T. aestivum > Raphanus sativus > Linum usitatissimum. Invariably, maximum inhibition was observed in the higher concentrations of aqueous extract.

scholarly journals Allelopathic effect of Celtis australis on germination and growth parameters of some important food crops of the Garhwal Himalayas

2018 ◽  
Vol 10 (3) ◽  
pp. 1003-1010
Author(s):  
Neha Pant ◽  
V. P. Khanduri ◽  
R. S. Bali ◽  
Pravin Rawat ◽  
Ram Gopal
Keyword(s):  
Triticum Aestivum ◽  
Lens Culinaris ◽  
Leaf Extract ◽  
Inhibitory Effect ◽  
Germination Percentage ◽  
Shoot Length ◽  
Allelopathic Effect ◽  
Aqueous Extracts ◽  
Maximum Inhibition ◽  
Celtis Australis

Present study was conducted to assess the allelopathic effect of leaf and bark aqueous extracts of Celtis australis on Triticum aestivum, Hordeum vulgare, Brassica rapa, Lens culinaris and Vigna umbellate under In-vitro condition. Different leaf and bark aqueous extracts 5%, 10%, and 15% were used to irrigate the seeds of test crops. The results revealed that the concentration dependent significant (p=0.05) inhibitory effect of aqueous leaf and bark extracts on germination, root and shoot length of all the test crops. Among all the test crops Triticum aestivum was found most sensitive where the germination percentage was reduced down to 46.0% by the leaf extract (15%) as compared to control (82.3%), while the maximum inhibition in the root length of  Lens culinaris (0.5 cm) by 10% leaf extract was observed as compare to control (8.2 cm). In shoot length maximum inhibitory effect was observed in Hordeum vulgare (3.5 cm) as compared to control (13.3 cm). Similarly, the bark extract showed the maximum inhibition in germination percentage of Lens culinaris (41.6%) at 15% concentration as compare to control (70.0%) while the maximum inhibition for the root length was recorded in Triticum aestivum (1.9 cm) at 15% concentration as compare to control (17.3 cm). In shoot length maximum inhibition was observed for Triticum aestivum (1.3 cm) at 10% extract level as compare to control (13.4 cm), while Vigna umbellate (5.5 cm) at 15% concentration showed stimulatory effect as compare to control (3.4 cm) exceptionally. Finally, it is concluded that Vigna umbellate exhibited the maximum tolerance against leaf and bark aqueous and might be a better option for intercropping with C. australis. However, the allelopathic effect on the other test crops can be minimized by removing the fallen leaves from the agricultural fields.

scholarly journals Effect of Different Concentrations of Aqueous Leaf Extracts of Some Plants on the Germination and Seedling Growth of Maize, Z. mays L. and Wheat (T. aestivum L.)

2014 ◽  
Vol 3 (3) ◽  
pp. 264-274
Author(s):  
Rizwan Ali Khan ◽  
Kaiser Iqbal ◽  
Aatif Hussain ◽  
Showkat Azeem
Keyword(s):  
Triticum Aestivum ◽  
Leaf Extract ◽  
Root Elongation ◽  
Zea Mays L ◽  
Inhibitory Effect ◽  
Allelopathic Effect ◽  
Food Crops ◽  
Leaf Extracts ◽  
Leaf Leachate ◽  
Aqueous Leaf Extract

Allelopathic effect of aqueous leaf extract of three different species (eucalyptus, guava, and litchi) were used to investigate their effect on germination, shoot and root lengths of two food crops viz. Zea mays L. (Maize) and Triticum aestivum (Wheat). Mature fresh leaves of three species were crushed and soaked for 24h; the filtrates were diluted to make different concentrations (T1 = 0.5%, T2 = 1.0%, T3 = 1.5%, T4 = 2.0%, and T5 = 0.0%), and were used to investigate their effect on the tested crops. The aqueous leaf leachate of three species was found to have inhibitory effect on germination, shoot, and root elongation on the tested crops. Current study indicates that inhibitory effect was much more pronounced at higher concentrations, and the effect increased with the increase in concentration. Among trees, Eucalyptus has much more effect on the tested crops than other species. DOI: http://dx.doi.org/10.3126/ije.v3i3.11085 International Journal of Environment Vol.3(3) 2014: 264-274

scholarly journals Propagation and Possible Allelopathic Effects of Vernoniazeylanica on Selected Bioassay Species

CORD ◽  
2020 ◽  
Vol 36 ◽  
pp. 41-46
Author(s):  
S.H.S. Senarathne ◽  
S. S. Udumann
Keyword(s):  
Seed Germination ◽  
Plant Species ◽  
Seedling Growth ◽  
Contaminated Soil ◽  
Leaf Extract ◽  
Cocos Nucifera ◽  
Test Plant ◽  
Allelopathic Effect ◽  
Aqueous Leaf Extract ◽  
Allelopathic Effects

Vernonia zeylanica (L.) belongs to the family Asteraceae, is one of the major endemic weed species present in coconut (Cocos nucifera L.) plantations of the tropics, which propagates very easily.  There is a possibility that this plant could also possess allelopathic effects, but this has not been scientifically tested.  Thus, a study was carried out to determine the seed germination of V. zeylanica under soil moisture stress conditions, shoot propagation methods and possible allopathic effects of this species, on selected species in bioassay tests.  Germination of V. zeylanica seeds was not observed at higher osmotic potential (-0.9 MPa).  The highest sprouting percentage of this species were obtained with soft wood cuttings.  The aqueous leaf extract was highly phytotoxic, and it significantly reduced germination and seedling growth of all bioassay species tested. Full strength (33.3 g L-1) aqueous extracts of leaves significantly reduced the germination percentage, root and hypocotyl growth rates of all species tested.  The inhibitory effects were often dependent on concentration.  However, the degree of inhibition varied among the test plant species.  The seedling emergences of all four tested plants were severally inhibited when planted in V. zeylanica contaminated soil.  The results indicated that incorporated aqueous leaf extract of V. zeylanica and its rhizosphere contaminated soil can suppress seed germination, seedling growth and seedling emergence of certain plant species indicating a possible allelopathic effect.

Acute Toxicity and Hepatocurative Effect of Aqueous Leaf Extract of Jatropha curcas in Rats

2015 ◽  
Vol 5 (1) ◽  
pp. 52-57
Author(s):  
M. Dangambo ◽  
H. Kabara ◽  
A. Alhassan ◽  
M. Sule ◽  
M. Atiku ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Jatropha Curcas ◽  
Leaf Extract ◽  
Aqueous Leaf Extract

scholarly journals Studies on Allelopathic Effect of Aqueous Leaf Extract of Putranjiva Roxburghii Wall. on Seed Germination and Early Growth of Chickpea (Cicer Arietinum L.)

2019 ◽  
Author(s):  
Satyajit Oraon ◽  
Subrata Mondal
Keyword(s):  
Seed Germination ◽  
Leaf Extract ◽  
Inhibitory Effect ◽  
Early Growth ◽  
Growth Stages ◽  
Allelopathic Effect ◽  
Leaf Extracts ◽  
Cicer Arietinum L ◽  
Aqueous Leaf Extract ◽  
Putranjiva Roxburghii

The present study reveals the allelopathic effect of aqueous leaf extracts of Putranjiva roxburghii Wall. on seed germination and early growth stages of an economically important plant chickpea (Cicer arietinum L.). Aqueous leaf extracts at 0, 5, 10, 15, 25, 35, 50, 75 and 100% concentrations were applied to determine their effect on seed germination and early growth stages under laboratory conditions. Laboratory-based experiments with three replicates were used to arrange treatments accordingly. After 5 days of incubation the rate of seed germination, radicle length and hypocotyls length etc. of chickpea seeds were observed after treatment with aqueous leaf extracts. Highest inhibitory effect was noticed in 100% of aqueous leaf extract. Results indicated that the inhibitory effect was proportional to the concentration of the extracts. The water soluble leaf extracts contain allelochemicals, which inhibit the seed germination and reduced the early growth of chickpea.

Aqueous Leaf Extract of Duranta repens Promotes Seed Germination and Seedling Growth of Salinity-Stressed Solanum lycopersicum Seedlings.

2018 ◽  
Vol 7 (2) ◽  
Author(s):  
Shuaib olasupo Osineye
Keyword(s):  
Solanum Lycopersicum ◽  
Leaf Extract ◽  
Growth Parameters ◽  
Chlorophyll Concentration ◽  
Allelopathic Effect ◽  
Distilled Water ◽  
Positive Role ◽  
Aqueous Leaf Extract ◽  
Group 5 ◽  
Group 2

Aqueous extract of Duranta repens leaves was investigated for its allelopathic effect on Solanum lycopersicum seedlings germinated and grown under salinity condition. The study was carried out using both laboratory petridish and pot assays to simulate the plant’s immediate environmental conditions. The experiment consisted of 5 groups (1-5) each containing 4 replicates (of 10 seeds). Group 1 was treated with distilled water; Group 2 was treated with 5 mM NaCl; Group 3 was treated with Duranta repens aqueous leaf extract, Group 4 was treated with a mixture of 5 mM NaCl and the extract (2:1 v/v) and Group 5 was treated with a mixture of 5 mM NaCl and the extract (1:2 v/v). Results from the studies revealed that treatment with NaCl caused significant (p < 0.05) reduction in percentage germination and growth parameters (plumule and radicle lengths) of S. lycopersicum seedlings, when compared to those treated with distilled water and D. rupens aqueous leaf extract. NaCl treatment (Group 2) also caused an increase in malondialdehyde (MDA) and also increased the activities of superoxide dismutase (SOD) and catalase (CAT) while reducing chlorophyll concentration of the plants. However, in the presence of the extract, the adverse effects of the NaCl were attenuated, implying that the extract improved tolerance of S. lycopersicum seedlings. In conclusion, the findings of this study indicate that the constituents of the extract may play a positive role in plant survival under saline conditions and could be employed in the management of soil salinity problem in agriculture.

Evaluation of the Anti-Convulsant Activity of Aqueous Leaf Extract of Jatropha curcas (Euphorbiaceae) in Mice

2018 ◽  
Vol 2 (11) ◽  
pp. 489-493
Author(s):  
Olapeju Bolanle ◽  
◽  
Osakponmwen Oviasogie ◽  
Omonkhelin Owolabi ◽  
Abigail Akhigbemen ◽  
...  
Keyword(s):  
Jatropha Curcas ◽  
Leaf Extract ◽  
Aqueous Leaf Extract
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