scholarly journals Allelopathic Effects of Aqueous Extract of Leaves of Parthenium Hysterophorus L. on Seed Germination and Seedling Growth of Some Cultivated and Wild Herbaceous Species

1970 ◽  
Vol 5 (5) ◽  
pp. 33-39 ◽  
Author(s):  
Seerjana Maharjan ◽  
Bharat Babu Shrestha ◽  
Pramod Kumar Jha
Keyword(s):  
Triticum Aestivum ◽  
Zea Mays ◽  
Oryza Sativa ◽  
Seed Germination ◽  
Aqueous Extract ◽  
Parthenium Hysterophorus ◽  
Cereal Crops ◽  
Ageratina Adenophora ◽  
Allelopathic Effects ◽  
Artemisia Dubia

Allelopathic effects of aqueous extract of leaves of Parthenium hysterophorus were studied on seed germination and seedling growth of three cereal crops (Oryza sativa L., Zea mays L. and Triticum aestivum L.), three cultivated crucifers (Raphanus sativus L., Brassica campestris L. and Brassica oleracea L.) and two wild species of family Asteraceae (Artemisia dubia Wall ex. Besser and Ageratina adenophora (Spreng) King and HE Robins). Seed germination of all crucifer species was completely inhibited at >2% leaf extract of Parthenium hysterophorus but in other species, except maize, complete failure of seed germination was recorded only at >6% in Triticum aestivum and Ageratina adenophora; at 10% in Oryza sativa and Artemisia dubia. Seed germination of Zea mays was not completely inhibited but it was low at high concentration of the extract. The extract had strong inhibitory effect to root elongation of seedling in cereals and to shoot elongation in crucifers and wild Asteraceae. Leaves of Parthenium hysterophorus may be a source of natural weedicide against Ageratina adenophora which will help to control invasive plants. Key words: Alien invasive; Asteraceae; Cereal crops; Crucifers; Seedling biomass; Weedicide. DOI: 10.3126/sw.v5i5.2653 Scientific World, Vol. 5, No. 5, July 2007 33-39

scholarly journals Allelopathic potential of Parthenium hysterophorus on wheat, Triticum aestivum. rice, Oryza sativa, soybean, Glycine max and pigeonpea, Cajanus cajan

2020 ◽  
Vol 26 (2) ◽  
Author(s):  
Goverdhan Singh Thakur ◽  
Shriram Kunjam
Keyword(s):  
Triticum Aestivum ◽  
Oryza Sativa ◽  
Glycine Max ◽  
Seed Germination ◽  
Aqueous Extract ◽  
Seedling Growth ◽  
Cajanus Cajan ◽  
Parthenium Hysterophorus ◽  
Seedling Vigour ◽  
Allelopathic Potential

Allelopathic effects of Parthenium hysterophorus were studied on seed germination and seedling growth of Triticum aestivum, Oryza sativa, Glycine max and Cajanus cajan. The shade dried leaves of Parthenium hysterophorus were soaked in distilled water for 24 hours at room temperature to obtain aqueous extract and sterilized seeds were treated with 2%, 4%, 6%, 8% and 10% concentration of P. hysterophorus leaves aqueous extract. The germinated seeds were counted every day to observe mean germination time. It has been found that significant time is taken to germinate with increasing concentration. It has been also observed that germination percentage, root length, shoot length and seedling vigour value were reduced at >2% as compared to control. The 10 % aqueous extract showed the maximum inhibitory effect on seedling growth. In the present investigation, the leaves aqueous extract of P. hysterophorus had strong inhibiting effects on seed germination and seedling growth. It is necessary to keep this weed under check at the emerging stage at agro crop field so that crop growth constraint may be avoided

scholarly journals Allelopathic effects of invasive alien species Parthenium hysterophorus L. on seed germination of paddy and wheat

2018 ◽  
Vol 6 ◽  
pp. 1-5
Author(s):  
Binita Shrestha ◽  
Chandra Bahadur Thapa
Keyword(s):  
Seed Germination ◽  
Parthenium Hysterophorus ◽  
Cereal Crops ◽  
Wheat Roots ◽  
Plant Parts ◽  
Randomized Design ◽  
Whole Plant ◽  
Maximum Inhibition ◽  
Allelopathic Effects ◽  
Stem Leaf

The invasive species are the major cause of crop loss, across the globe, mainly due to their allelopathic effects on the growth of crop plants. In this study, we explored the allelopathic effects of Parthenium hysterophorus on germination of two major cereal crops of Nepal, Rice (Oryza sativa) and Wheat (Triticum aestivum). The experiment was conducted at laboratory of Department of Botany, Prithivi Narayan Campus, Pokhara, Nepal during 2017. In laboratory, seeds of rice and wheat were treated with aqueous extracts of P. hysterophorus plant parts viz. root, stem, leaf, inflorescence and whole plant with concentration of 5, 10, 15 and 20%. The experiment was laid out in a complete randomized design (CRD) in a factorial arrangement with three replicates of each test. The result suggests that the effect was more on wheat than on rice. The maximum inhibition in seed germination of rice was recorded by the inflorescence extract however, in wheat seed germination was inhibited by leaf extract. In both rice and wheat, roots were highly affected than shoots because root first encounters the toxic allelochemicals and absorbs it. The highest concentration (20%) of leaf, inflorescence and whole plant extract was found to be most pernicious whereas root and stem were recorded to have little effects.

scholarly journals Allelopathic Effects of Aqueous Extract of Leaves of Mikania Micrantha H.B.K. on Seed Germination and Seedling Growht of Oryza Sativa L. and Raphanus Sativus L.

2013 ◽  
Vol 11 (11) ◽  
pp. 91-93 ◽  
Author(s):  
Anita Sahu ◽  
Anjana Devkota
Keyword(s):  
Oryza Sativa ◽  
Seed Germination ◽  
Aqueous Extract ◽  
Raphanus Sativus ◽  
Oryza Sativa L ◽  
Mikania Micrantha ◽  
Scientific World ◽  
Raphanus Sativus L ◽  
Allelopathic Effects

Scientific World, Vol. 11, No. 11, July 2013, page 90-93 DOI: http://dx.doi.org/10.3126/sw.v11i11.8559

ALLELOPATHIC EFFECTS OF PARTHENIUM HYSTEROPHORUS ON SEED GERMINATION AND SEEDLING GROWTH IN CAJANUS CAJAN

2017 ◽  
Vol 23 (2) ◽  
Author(s):  
G. S. THAKUR
Keyword(s):  
Seed Germination ◽  
Aqueous Extract ◽  
Seedling Growth ◽  
Cajanus Cajan ◽  
Pigeon Pea ◽  
Inhibitory Effect ◽  
Germination Percentage ◽  
Parthenium Hysterophorus ◽  
Germination Index ◽  
Allelopathic Effects

In this study the allelopathic effects of Parthenium hysterophorus on seed germination and seedling growth in Cajanus cajan (Pigeon pea) was investigated. The dried powdered leaves of Parthenium hysterophorus were soaked in distilled water for 24 hours to obtain aqueous extract of leaves and sterilized seeds were treated with 2%, 4%, 6%,8%, and 10% concentration of extract in triplicate. The germinated seeds were counted every day to observe germination index (G.I.) and mean germination time (MGT). It has been found that germination index (GI) were significantly decreased and MGT were delayed to germinate with increasing concentration. It has been observed that seed germination percentage, root length, shoot length and seedling vigor index were reduced at >2% as compared to control. The 10 % aqueous extract showed completely inhibitory effect on seed germination. The present investigation showed that the leaves aqueous extract of Parthenium hysterophorus had inhibiting effects on seed germination and seedling growth in Cajanus cajan (Pigeon pea).

scholarly journals Estado del Cultivo de Plátano (Musa sp) en el Municipio de Tlapacoyan, Veracruz

UVserva ◽  
2018 ◽  
Author(s):  
Paloma Violeta Susan Tepetlan
Keyword(s):  
Triticum Aestivum ◽  
Zea Mays ◽  
Oryza Sativa ◽  
Banana Production ◽  
Tropical Countries ◽  
Musa Sp ◽  
Important Crop ◽  
The World

Los bananos y plátanos (Musa sp) se cultivan en más de 120 países alrededor del mundo y suministran una importante fuente de carbohidratos para más de 400 millones de personas en países tropicales, representan el cuarto cultivo de mayor importancia después del maíz (Zea mays), trigo (Triticum aestivum) y arroz (Oryza sativa). En México, se cultivan en 15 Estados, la variedad de bananos y plátanos que se cultivan  es amplia, dentro de ellas destacan los bananos como el Plátano Tabasco o Roatán, Enano Gigante, Criollo, Valery, Dominico, Manzano y los plátanos Macho, Morado y Pera, entre otros. Veracruz, ocupa el tercer lugar a nivel nacional en su, después de Chiapas y Tabasco, produciéndose en zonas en las que el cultivo es una de las principales actividades.Palabras clave: cultivo de plátano; Veracruz; países tropicales; Tlapacoyan Abstract Bananas and plantains are grown in more than 120 countries around the world, provides an important source of carbohydrates for more than 400 million people in tropical countries, is the fourth most important crop after maize (Zea mays), wheat (Triticum aestivum) and rice (Oryza sativa). In Mexico, are grown in 15 states, banana and plantain cultivars that are grown is wide, within them we can found bananas as Tabasco or Roatán, Giant Dwarf, Macho, Criollo, Valery, Dominico, Manzano and plantains as Morado and Pera between others. Veracruz, is third in banana production, after Chiapas and Tabasco, taking place in areas where this crop is one of the main activities.Keywords: banana cultivation; Veracruz; tropical countries; Tlapacoyan

scholarly journals Germination and seedlings growth of Corn (Zea mays L.) to allelopathic effects of rice (Oryza sativa L.)

2019 ◽  
Vol 6 (1) ◽  
pp. 152-156 ◽  
Author(s):  
Mohamad Hesam Shahrajabian ◽  
◽  
Mehdi Khoshkharam ◽  
Wenli Sun ◽  
Qi Cheng ◽  
...  
Keyword(s):  
Zea Mays ◽  
Oryza Sativa ◽  
Zea Mays L ◽  
Oryza Sativa L ◽  
Allelopathic Effects

scholarly journals Allelopathic Effect of Artemisia Dubia Extracts on Seed Germination and Seedling Growth of Some Weeds and Winter Crops

2015 ◽  
Vol 21 ◽  
pp. 23-30
Author(s):  
Baby Babita Das Mallik ◽  
BD Acharya ◽  
M Saquib ◽  
MK Chettri
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Leaf Extract ◽  
Cyperus Rotundus ◽  
Allelopathic Effect ◽  
Ageratum Conyzoides ◽  
Bidens Pilosa ◽  
Winter Crops ◽  
Allelopathic Effects ◽  
Artemisia Dubia

Allelopathic effects of aqueous extract of different plant parts (root, stem and leaf) of Artemisia dubia on seed germination and seedling growth of two winter crops (Triticum aestivum and Brassica campestries, and some associated weeds (Bidens pilosa, Ageratum conyzoides, Galinsoga parviflora and Cyperus rotundus) have been investigated in the present study. Extracts of root, stem and leaves of Artemisia dubia showed significant reduction in germination and seedling growth of test crops and weeds. Germination of crop and weed seeds and growth of shoot and root were reduced significantly in test treatments in comparison to the control. The seed germination, shoot length and root length were low at higher concentration. Complete inhibition of seed germination of Ageratum conyzoides, Galinsoga parviflora and Cyperus rotundus at 5 and 10% leaf extract of A.dubia was observed. Allelopathic effects were more pronounced with leaf extract than root or stem extract in most cases.The result indicated difference in allelopathic effect on crop seed and weed seed at higher concentrations. ECOPRINT 21: 23-30, 2014DOI: http://dx.doi.org/10.3126/eco.v21i0.11901

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