Phenotypic variation in morphology and associated functional traits in Ageratina adenophora along an altitudinal gradient in Kumaun Himalaya, India

Khatri, Kavita; Negi, Bhawna; Bargali, Kiran; Bargali, Surendra Singh

doi:10.1007/s11756-022-01254-w

Cited by 16 publications

(6 citation statements)

References 74 publications

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“…Plant physiologists, ecologists, and palaeobotanists are very interested in the relationship between altitude and plant morphology since species from high elevations often differ from those from lower altitudes in terms of morphology and physiology. With the aim of understanding the variations of morphological and reproductive traits in a notorious invasive weed Ageratina adenophora (Asteraceae), along the altitudinal gradient in the central Himalayas (India), Khatri et al (2022) carry out a study of phenotypic variation in morphology and associated functional traits.…”

Section: The Main Contribution Of the Presented Studiesmentioning

confidence: 99%

Biological invasions in the twenty-first century: a global risk

et al. 2023

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Section: The Main Contribution Of the Presented Studiesmentioning

confidence: 99%

Biological invasions in the twenty-first century: a global risk

et al. 2023

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“…Crofton weeds display relatively high productivity and a rapid growth rate and can achieve a height of 1-3 m [76]. Several studies have reported that invasive plants tend to allocate high biomass towards leaves and shoots [22,77,78], thus, acquiring greater height than their native counterparts. These traits enable Crofton weeds to form dense monospecific stands, creating shade over native plant species.…”

Section: Near Ridgesmentioning

confidence: 99%

Invasive Ageratina adenophora (Asteraceae) in Agroecosystems of Kumaun Himalaya, India: A Threat to Plant Diversity and Sustainable Crop Yield

2023

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Invasive plant species pose a serious threat to agricultural yield, although how the threat varies with the distance of crops from invasive plants remains unclear. Therefore, utilizing this viewpoint, objectives were formulated to quantify differences in the native vegetation and performance of crops growing near A. adenophora–invaded (treatment plots) and uninvaded ridges (control plots) in the terraced agricultural fields of Kumaun Central Himalaya. Morphological and yield parameters of two crops, viz. rice (Oryza sativa L.) and soybean (Glycine max L.), were assessed systematically by laying parallel transects from the ridge of the field up to 5 m towards the centre of the field in three equal distance intervals of 1 m in the order: 0–1 m, 2–3 m, and 4–5 m. Crofton weed showed 95–100% crown cover throughout invaded ridges/risers of terraced fields, with stem densities of 134–208 ind. m−2 and an average basal area of 0.15 cm2. The total mean density of herbs (other than A. adenophora) in invaded ridges/risers decreased by 38–85% compared to uninvaded ridges, but species richness increased by 31–37%. Soil nutrient availability was high across invaded ridges/risers as well as crop fields. The average irradiance level near uninvaded ridges was 19.6 ± 1.80%, and near invaded ridges, it was 1.8 ± 0.31%. Compared to straw, root, and grain yields obtained at the farthest distance, the yield of rice near uninvaded ridges was reduced by 27%, 19%, and 33%, while near invaded ridges, it was reduced by 37%, 39%, and 43%, respectively; the yield of soybean near uninvaded ridges declined by 62%, 66%, and 42%, while near invaded ridges, it decreased by 59%, 69%, and 47%, respectively. Compared to the values obtained at the farthest distance, the harvest index (HI) of rice near ridges was reduced by 7% and 13%, while the HI of soybean increased by 15 and 10% across uninvaded and invaded field ridges, respectively. The findings indicated that the Crofton weed could suppress field crops and could form a single dominant population in the invaded area, causing a serious threat to the plant community, its diversity, and the yield of the native agroecosystem in the foreseeable future if timely management actions would not be taken.

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“…The growth conditions of plants vary significantly with altitude; generally, as the altitude increases, the average temperature gradually decreases, precipitation decreases, atmospheric pressure decreases, solar radiation intensifies, soil fertility decreases, and the growing season for plants shortens, and these changes result in a series of variations in plant morphological traits [5,6]. Studies have shown that, as the altitude increases, the morphological traits of the leaves of the Hawthorn species in the Junggar region undergo significant changes; at lower altitudes, they primarily increase leaf area and chlorophyll content to rapidly acquire the necessary resources for growth; however, at higher altitudes, they adapt to low-temperature stress and intense light radiation by increasing leaf thickness and palisade tissue thickness and reducing leaf area and chlorophyll content [7].…”

Section: Introductionmentioning

confidence: 99%

Study on Morphological Traits of Natural Populations of Vaccinium uliginosum at Different Altitudinal Gradients on Changbai Mountain

Fan,

Guo,

Zheng

2024

Horticulturae

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Vaccinium uliginosum (VU) is one of the most precious wild berry plants distributed in the Changbai Mountain region in northeast China. Eight key morphological traits of VU were analyzed to examine the variation among and within five natural populations at different altitudes, as well as their response to environmental factors. The study results showed an increasing trend of variation among populations with ascending altitudes, but the range variation within populations exhibited a decreasing trend. The diversity level among populations was found to be higher than that within populations, and the five populations of VU were classified into four groups. Except for leaf width and twig length, all other morphological traits demonstrated significant or extremely significant correlations. Generally, with increasing altitude, leaf length decreased, while plant height, clear bole height, and basal diameter decreased significantly, and similar trends were observed with moisture factors, while a significant positive correlation was found with temperature factors. Among them, the morphological traits of clear bole height and basal diameter exhibited the strongest correlation with environmental factor variations. Overall, these findings indicate extensive variation in the morphological traits of VU within and among populations at different altitudes, with clear responses to changes in environmental factors.

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Phenotypic variation in morphology and associated functional traits in Ageratina adenophora along an altitudinal gradient in Kumaun Himalaya, India

Cited by 16 publications

References 74 publications

Biological invasions in the twenty-first century: a global risk

Biological invasions in the twenty-first century: a global risk

Invasive Ageratina adenophora (Asteraceae) in Agroecosystems of Kumaun Himalaya, India: A Threat to Plant Diversity and Sustainable Crop Yield

Study on Morphological Traits of Natural Populations of Vaccinium uliginosum at Different Altitudinal Gradients on Changbai Mountain

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