scholarly journals EFFECT OF ALLELOPATHIC POTENTIAL OF JOHNSON GRASS SORGHUM HALEPENSES L. ON GERMINATION AND GROWTH OF SOME CROPS AND RELATIVE INFLUENCE OF DIFFERENT SPECIES EXTRACTION ON SEED GERMINATION AND RIHZOM GROWTH OF JOHNSON GRASS

2010 ◽  
Vol 38 (1) ◽  
pp. 138-142
Author(s):  
A.M. Sultan
Keyword(s):  
Seed Germination ◽  
Relative Influence ◽  
Allelopathic Potential ◽  
Johnson Grass ◽  
Germination And Growth

scholarly journals Allelopathic evidence in exotic guava (Psidium guajava L.)

2010 ◽  
Vol 53 (6) ◽  
pp. 1359-1362 ◽  
Author(s):  
Tatiani Elisa Chapla ◽  
João Batista Campos
Keyword(s):  
Seed Germination ◽  
Field Experiments ◽  
Psidium Guajava ◽  
Allelopathic Potential ◽  
Plant Parts ◽  
Extract Concentration ◽  
Allelopathic Activity ◽  
Lactuca Sativa L ◽  
Leaf Aqueous Extract ◽  
Germination And Growth

The allelopathic activity of the leaf aqueous extract of guava (Psidium guajava L.) on seed germination and root growth in lettuce (Lactuca sativa L.) was studied in an experiment consisting of four replicates with 10 seeds each and extract concentrations of 5, 10, and 20%. Guava allelopathic activity occurred during the germination and growth of lettuce roots at 20% extract concentration, as shown by ANOVA. This result suggested the allelopathic potential of the species. Therefore, the success of P. guajava in invading environments could be partially due to allelopathy. Further studies using other plant parts and field experiments should be conducted.

Allelopathic Potential of Wheat (Triticum aestivum) Straw on Selected Weed Species

Weed Science ◽  
1982 ◽  
Vol 30 (5) ◽  
pp. 495-497 ◽  
Author(s):  
James W. Steinsiek ◽  
Lawrence R. Oliver ◽  
Fred C. Collins
Keyword(s):  
Triticum Aestivum ◽  
Seed Germination ◽  
Seedling Growth ◽  
Weed Seed ◽  
Weed Species ◽  
Allelopathic Potential ◽  
Ipomoea Lacunosa ◽  
Sesbania Exaltata ◽  
Pitted Morningglory ◽  
Germination And Growth

The allelopathic potential of wheat [Triticum aestivum(L.) ‘Doublecrop′] straw residue was evaluated on weed-seed germination and seedling growth. The inhibition of weed-seed germination and seedling growth was extract-, species-, and temperature-dependent. The extracts prepared by agitating and soaking caused greater inhibition than those obtained by leaching. The descending order of species susceptibility was ivyleaf morningglory [Ipomoea hederacea(L.) Jacq.], velvetleaf (Abutilon theophrastiMedic.), pitted morningglory (Ipomoea lacunosaL.), hemp sesbania [Sesbania exaltata(Raf.) Cory], sicklepod (Cassia obtusifoliaL.), and Japanese barnyard millet [Echinochloa crus-gallivar.frumetaceae(Roxb.) Link]. Incubation at 35 C caused the greatest inhibition of germination and growth.

scholarly journals Allelopathic Potential of Etlingera coccinea (B.) Sakai & Nagam on Seed Germination and Growth of Mung Bean and Siam Weed

2021 ◽  
Vol 15 (2) ◽  
pp. 79-89
Author(s):  
Mohamad Nadzrin Mohamad Zainurin ◽  
◽  
Nurfitri Harman ◽  
Lo Chor Wai ◽  
◽  
...  
Keyword(s):  
Seed Germination ◽  
Mung Bean ◽  
Suppressive Effect ◽  
Allelopathic Effect ◽  
Weed Species ◽  
Leaf Extracts ◽  
Allelopathic Potential ◽  
Methanolic Extracts ◽  
Germination And Growth

Etlingera coccinea, a native Borneon Zingiberaceae are found to exert allelopathic effect on some weed species. The objective of this study is to investigate the allelopathic effects of hexane (80%), methanol (80%), ethyl acetate (80%) extracts from the dried powder of both stem and leaf of E. coccinea on mung bean (Vigna radiata) and Siam weed (Chromolaena odorata). The phytochemical screening of both stem and leaf crude extracts elicited saponin, tannin, flavonoid, and terpenoid, which are targeted bioactive compounds for allelopathy. The allelopathic activity was assessed by evaluating their effects on seed germination and percentage of radicle and shoot growth. The results showed that both stem and leaf extracts have a suppressive effect on the mung bean development during in-vitro bioassay. The methanolic extracts of both stem and leaf showed the most significant suppression (100%) than other solvent extracts. In the pot experiment, the methanolic stem extracts suppressed the Siam weed’s germination by 57 ± 0.13% and the methanolic leaf extracts suppressed the growth by 46 ± 0.29%. The present study shows that E. coccinea methanolic extract has the potential as bio-herbicide.

scholarly journals The effect of five kinds of colloidal polymers for seed germination and growth in sand

2021 ◽  
Vol 804 (4) ◽  
pp. 042036
Author(s):  
Wenxu Zhang ◽  
Lulu Guo ◽  
Jing Chen ◽  
Shengfang Liu ◽  
Yifan Wang ◽  
...  
Keyword(s):  
Seed Germination ◽  
Germination And Growth

Pol III-Dependent Cabbage BoNR8 Long ncRNA Affects Seed Germination and Growth in Arabidopsis

2018 ◽  
Vol 60 (2) ◽  
pp. 421-435 ◽  
Author(s):  
Juan Wu ◽  
Chunxiao Liu ◽  
Ziguang Liu ◽  
Shuang Li ◽  
Dandan Li ◽  
...  
Keyword(s):  
Seed Germination ◽  
Pol Iii ◽  
Germination And Growth

scholarly journals The Influence Of Zinc On Seed Germination And Growth In The First Ontogenetic Stages In The Species Cucumis Melo L.

2015 ◽  
Vol 9 (2) ◽  
pp. 215-228 ◽  
Author(s):  
Anişoara Stratu ◽  
Naela Costică
Keyword(s):  
Seed Germination ◽  
Cucumis Melo ◽  
Growth Process ◽  
Lateral Roots ◽  
Tolerance Index ◽  
High Concentration ◽  
Seedling Vigour ◽  
Ontogenetic Stages ◽  
Vigour Index ◽  
Germination And Growth

AbstractThe paper presents the results of a study regarding the influence of treatment with zinc in different concentrations (50 mg∕l, 100 mg∕l, 200 mg ∕l, 300mg/l, 400 mg ∕l, 500 mg/l, 600 mg ∕l) on seed germination and growth in early ontogenetic stages ofCucumis meloL. We analyzed the following indicators: the percentage of germinated seeds; the length of root, the length of the hypocotyl and the length of the seedling; the number of the laterale roots; the tolerance index and the seedling vigor index. The results underline the specific variations of analysed indicators, depending on the concentrations used for the treatments of seeds. The concentrations used for treatment do not influence negatively the seed germination, but affected the seedling growth (especially the root elongation), the formation and growth process of lateral roots and the seedling vigour index. The delay effect of growth process is very pronounced in the case of high concentration.

Allelopathic potential of Artemisia campestris ssp. caudata on Lake Huron sand dunes

1997 ◽  
Vol 75 (11) ◽  
pp. 1903-1912 ◽  
Author(s):  
Kyeong W. Yun ◽  
M. A. Maun
Keyword(s):  
Seed Germination ◽  
Seedling Growth ◽  
Mycorrhizal Fungi ◽  
Sand Dune ◽  
Sand Dunes ◽  
Dry Weight ◽  
Fungal Colonization ◽  
Test Species ◽  
Allelopathic Potential ◽  
Artemisia Campestris

Greenhouse studies were conducted to test allelopathic effects of Artemisia campestris ssp. caudata on seed germination and seedling growth of several sand-dune species and colonization by mycorrhizal fungi. The aqueous extracts of A. campestris showed no inhibitory effect on seed germination, seedling elongation, or dry-weight growth of plants at lower concentrations (10 and 50%), but 100% concentration of the extracts caused varying degrees of inhibition depending on the test species. The mixing of dry leaves of seedlings of A. campestris to the sand showed severe inhibition of Elymus canadensis seedlings. The percent germination of test species in soil from the rhizosphere of A. campestris was significantly lower than that of the control. The leaf area and dry weight were also lower but the differences were not significant. The aqueous extract inhibited mycorrhizal fungal colonization in roots of three sand-dune grasses. Key words: allelopathy, Artemisia campestris ssp. caudata, seed germination, seedling growth, mycorrhizal fungi.

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