Weed potential of Mikania micrantha H.B.K., and its control in fallows after shifting agriculture (Jhum) in North-East India

Swamy, P. S.; Ramakrishnan, P. S.

doi:10.1016/0167-8809(87)90083-1

Cited by 30 publications

(22 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This corresponds with observations that seedlings establish only after fire (Swamy & Ramakrishnan 1987). Its fire dependence is shown by higher mean values of RGR, NAR and LAR in the burnt successional fallows of all ages than in unburnt fallows.…”

Section: Discussionsupporting

confidence: 90%

Effect of Fire on Growth and Allocation Strategies of Mikania micrantha Under Early Successional Environments

Swamy¹,

Ramakrishnan²

1988

The Journal of Applied Ecology

View full text Add to dashboard Cite

JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org. SUMMARY(1) The effect of fire on growth and allocation of biomass and nutrients in Mikania micrantha, an early successional exotic weed, was studied in seral communities developed after slash-and-burn agriculture (jhum) in north-eastern India.(2) In successional fallows, plant vigour was stable in burnt plots, but declined with age in unburnt plots. Biomass and nutrient allocation to seeds was higher in burnt than unburnt 8-year old plots.(3) Nutrient uptake efficiency was higher after burning and increased with age, but decreased with age in unburnt fallows, probably reflecting differences in soil nutrient availability and competition.(4) Nutrient-use efficiency was inversely related to uptake efficiency and may be a compensatory mechanism for survival.(5) It is concluded that M. micrantha is adapted to survival after fire.

show abstract

Section: Discussionsupporting

confidence: 90%

Effect of Fire on Growth and Allocation Strategies of Mikania micrantha Under Early Successional Environments

Swamy¹,

Ramakrishnan²

1988

The Journal of Applied Ecology

View full text Add to dashboard Cite

show abstract

“…Mikania micrantha mainly propagates by seeds, but its local spread mostly results from vegetative propagation [56], [83], [84]. When reproducing vegetatively, M. micrantha generates shoots from small stem fragments and rosettes [83], [84].…”

Section: Discussionmentioning

confidence: 99%

AFLP Genome Scan to Detect Genetic Structure and Candidate Loci under Selection for Local Adaptation of the Invasive Weed Mikania micrantha

Wang

Chen

Zan³

et al. 2012

PLoS ONE

View full text Add to dashboard Cite

Why some species become successful invaders is an important issue in invasive biology. However, limited genomic resources make it very difficult for identifying candidate genes involved in invasiveness. Mikania micrantha H.B.K. (Asteraceae), one of the world's most invasive weeds, has adapted rapidly in response to novel environments since its introduction to southern China. In its genome, we expect to find outlier loci under selection for local adaptation, critical to dissecting the molecular mechanisms of invasiveness. An explorative amplified fragment length polymorphism (AFLP) genome scan was used to detect candidate loci under selection in 28 M. micrantha populations across its entire introduced range in southern China. We also estimated population genetic parameters, bottleneck signatures, and linkage disequilibrium. In binary characters, such as presence or absence of AFLP bands, if all four character combinations are present, it is referred to as a character incompatibility. Since character incompatibility is deemed to be rare in populations with extensive asexual reproduction, a character incompatibility analysis was also performed in order to infer the predominant mating system in the introduced M. micrantha populations. Out of 483 AFLP loci examined using stringent significance criteria, 14 highly credible outlier loci were identified by Dfdist and Bayescan. Moreover, remarkable genetic variation, multiple introductions, substantial bottlenecks and character compatibility were found to occur in M. micrantha. Thus local adaptation at the genome level indeed exists in M. micrantha, and may represent a major evolutionary mechanism of successful invasion. Interactions between genetic diversity, multiple introductions, and reproductive modes contribute to increase the capacity of adaptive evolution.

show abstract

“…Originating in Central and South America, its invasion has been reported throughout the tropical Asia including Nepal. It exhibits an exceptionally fast growth rate and a high sexual reproductive capacity (Choudhary 1972, Swamy & Ramakrishnan 1987 and thus has earned the common name 'mile-a minute weed' (Holm et al 1977). This perennial, sprawling vine damages or kills other plants by cutting out the sunlight and smothering them.…”

Section: Mikania Micrantha Hbk (Hereafter Called As Mikania)mentioning

confidence: 99%

Impact of Mikania micrantha H.B.K. Invasion on Diversity and Abundance of Plant Species of Chitwan National Park, Nepal

Shrestha

Dangol

2015

J. Inst. Sci. Tech.

View full text Add to dashboard Cite

This research investigated the invasion of the alien plant Mikania micrantha H.B.K. and its impact on plant species richness and abundance in Chitwan National Park (CNP) forest. Stratified sampling technique was used to collect the information using the nested quadrats in the Mikania invaded and not invaded sites in July 2011. The study revealed that the invasion highly related with the vegetation structure of the habitat; higher the tree crown cover lower the invasion. On the other hand, the invasion in terms of cover percent of Mikania irrespective of the biomass (fresh weight) decreased plant species richness. Species richness showed unimodal response to the Mikania cover percent with the decrease after 35% of Mikania cover.

show abstract

Weed potential of Mikania micrantha H.B.K., and its control in fallows after shifting agriculture (Jhum) in North-East India

Cited by 30 publications

References 9 publications

Effect of Fire on Growth and Allocation Strategies of Mikania micrantha Under Early Successional Environments

Effect of Fire on Growth and Allocation Strategies of Mikania micrantha Under Early Successional Environments

AFLP Genome Scan to Detect Genetic Structure and Candidate Loci under Selection for Local Adaptation of the Invasive Weed Mikania micrantha

Impact of Mikania micrantha H.B.K. Invasion on Diversity and Abundance of Plant Species of Chitwan National Park, Nepal

Contact Info

Product

Resources

About