Comparative Evaluation of the Allelopathic Effects of the Leaf Extracts of Three Asteraceae Species (Ageratum conyzoides, Vernonia amygdalina, Artemisia annua)

Bassey, Chamberlain Solomon; Okoi, Emmanuel Paul

doi:10.9734/acri/2018/45397

Cited by 2 publications

(3 citation statements)

References 9 publications

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“…Also, the germination potential of L. sativa in control pot was 0.93 and in experimental pot was 0.73. A similar result was observed by Bassey (2018), that there is a gradual reduction in seed germination percentage of L. sativa and reduction of germination was concentration dependent.…”

Section: Germination Percentage and Germination Potentialsupporting

confidence: 87%

“…The Root length was higher in Control which is 4.8 cm and lower in Experimental of 4.45 cm. Cytological studies showed significant mitotic inhibition of root cells of L. sativa which was achievable only by the allelopathic effects of A. conyzoides (Bassey, 2018). On the other hand the Shoot length was of the opposite, which is higher in Experimental pot (27.65 cm) and lower in Control pot (1.6 cm).…”

Section: Seedling Height Root Length and Shoot Lengthmentioning

confidence: 94%

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Microcosm investigation on the allelochemic potential of Ageratum conyzoides on selected food crop

Syngkli¹,

Lallianpuii²,

Kumar³

2022

EEC

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Invasive alien plants like Ageratum conyzoides influence the growth, yield, development, and productivity of food crops. The various allelochemicals present in A. conyzoides exert stimulatory or inhibitory effects on the food crops. In this microcosm investigation through pot experiments, we evaluated the allelopathic potential of A. conyzoides on the germination and seedling growth of a leafy vegetable of nutritional value i.e., Lactuca sativa. The soil samples were collected from two different sites i.e., healthy forest soil and soil invaded by A. conyzoides. The healthy forest soil was considered as control pot while A. conyzoides invaded soil was selected for the experimental pot. The inhibitory effect of the invasive plant was observed on the tested crop of dietary value in human nutrition. The results revealed that the germination of the seeds is inhibited and suppressed by A. conyzoides. Microcosm studies demonstrated that out of the 15 seeds planted on both pots, 13 seeds germinated and thrived on the experimental pot and 14 on the control pot. The seedling height (32.1 cm), shoot length (27.65 cm), seedling biomass (1.866 g) and vigor index (6.829) were recorded higher in the experimental pot. Whereas, the root length (4.8 cm), germination potential (0.93), germination percentage (93.33%), germination index (4.66) and germination rate index (434.91) were noted higher in the control pot. A. conyzoides therefore showed both the inhibitory and stimulatory effects on L. sativa and thereby exhibited both positive and negative allelopathic effects. Further, bioassay experiments with other bioassay crops can elucidate the chemical ecology and allelopathy potential of A. conyzoides

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Section: Germination Percentage and Germination Potentialsupporting

confidence: 87%

Section: Seedling Height Root Length and Shoot Lengthmentioning

confidence: 94%

Microcosm investigation on the allelochemic potential of Ageratum conyzoides on selected food crop

Syngkli¹,

Lallianpuii²,

Kumar³

2022

EEC

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“…The fresh weight of all the test species declined under test condition, especially in leaves (Table 1). (12,13,17,(23)(24)(25). All these studies are in line with the present findings.…”

Section: Aqueous Extract Bioassaymentioning

confidence: 99%

Allelopathic inhibition of germination, seedling growth and cell division of selected plant species by Calotropis procera (Ait.) Ait.

et al. 2020

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Calotropis procera (Ait.) Ait. is perennial medicinal obnoxious shrub growing in Pakistan up to 1500 m altitude. Hot and water aqueous extracts from leaves and young stems of C. procera were used against Pennisetum glaucum (Linn.) R. Br., Setaria italica (Linn.) P. Beauv., Brassica campestris Linn. and Lactuca sativa L. under laboratory condition. It was seen that germination, seedling growth, fresh and dry biomass reduced in concentration dependent manner. It was observed that the allelopathic effects depended upon the tested species, growth parameter measured, soaking duration and concentration of the donor plant material. The C. procera litter incorporated into the growth medium inhibited the test species used. The C. procera extracts from leaves were more inhibitory than stem extracts. The tendency of inhibition was radical growth > germination > plumule growth suggesting radicle growth to be a better measure of allelopathy. Leaf extracts significantly reduced division and size of cells. It is suggested that aqueous extract from C. procera can be further assessed against microbes and weed under laboratory and field condition.

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Comparative Evaluation of the Allelopathic Effects of the Leaf Extracts of Three Asteraceae Species (Ageratum conyzoides, Vernonia amygdalina, Artemisia annua)

Cited by 2 publications

References 9 publications

Microcosm investigation on the allelochemic potential of Ageratum conyzoides on selected food crop

Microcosm investigation on the allelochemic potential of Ageratum conyzoides on selected food crop

Allelopathic inhibition of germination, seedling growth and cell division of selected plant species by Calotropis procera (Ait.) Ait.

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