Growth response of Ficus benjamina to limited soil volume and soil dilution in a skeletal soil container study

Loh, Felix C.W.; Grabosky, Jason; Bassuk, Nina L.

doi:10.1078/1618-8667-00023

Cited by 27 publications

(24 citation statements)

References 21 publications

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“…Pot size significantly altered the responses of A net , non-structural carbohydrates and total biomass to HNT and LNT. Small pots constrained below-ground growth along with more limitation on above-ground growth (Thomas and Strain, 1991; Loh et al, 2003; Climent et al, 2011), given that a skimpy supply of nutrients and water which might induce strong nutrient or water inhibition (Walters and Reich, 1989). …”

Section: Discussionmentioning

confidence: 99%

Plant Physiological, Morphological and Yield-Related Responses to Night Temperature Changes across Different Species and Plant Functional Types

et al. 2016

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Land surface temperature over the past decades has shown a faster warming trend during the night than during the day. Extremely low night temperatures have occurred frequently due to the influence of land-sea thermal difference, topography and climate change. This asymmetric night temperature change is expected to affect plant ecophysiology and growth, as the plant carbon consumption processes could be affected more than the assimilation processes because photosynthesis in most plants occurs during the daytime whereas plant respiration occurs throughout the day. The effects of high night temperature (HNT) and low night temperature (LNT) on plant ecophysiological and growing processes and how the effects vary among different plant functional types (PFTs) have not been analyzed extensively. In this meta-analysis, we examined the effect of HNT and LNT on plant physiology and growth across different PFTs and experimental settings. Plant species were grouped according to their photosynthetic pathways (C3, C4, and CAM), growth forms (herbaceous, woody), and economic purposes (crop, non-crop). We found that HNT and LNT both had a negative effect on plant yield, but the effect of HNT on plant yield was primarily related to a reduction in biomass allocation to reproduction organs and the effect of LNT on plant yield was more related to a negative effect on total biomass. Leaf growth was stimulated at HNT and suppressed at LNT. HNT accelerated plants ecophysiological processes, including photosynthesis and dark respiration, while LNT slowed these processes. Overall, the results showed that the effects of night temperature on plant physiology and growth varied between HNT and LNT, among the response variables and PFTs, and depended on the magnitude of temperature change and experimental design. These findings suggest complexities and challenges in seeking general patterns of terrestrial plant growth in HNT and LNT. The PFT specific responses of plants are critical for obtaining credible predictions of the changes in crop production, plant community structure, vegetation dynamics, biodiversity, and ecosystem functioning of terrestrial biomes when asymmetric night temperature change continues.

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Section: Discussionmentioning

confidence: 99%

Plant Physiological, Morphological and Yield-Related Responses to Night Temperature Changes across Different Species and Plant Functional Types

et al. 2016

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“…Typically, plants in larger pots achieved bigger root mass (McConnaughay and Bazzaz 1991;Bar-Tal et al 1995;Loh et al 2003). The effects of larger soil volumes on root mass were different than interplant interactions, as demonstrated in our experiment.…”

Section: Grain-mass (Grams)mentioning

confidence: 57%

“…Hess and de Kroon (2007), however, hypothesized that root overproduction in the presence of another plant is consistent with effects due to the larger soil volume available to these plants than to plants growing alone. Earlier, McConnaughay and Bazzaz (1991) and Loh et al (2003), clearly showed that root mass is a function of the available rooting volume, independent of the available nutrients. However, some of the observed root overproduction could not be immediately explained solely based on volume of soil and nutrient availability (Hess and de Kroon 2007).…”

mentioning

confidence: 99%

Interplant root competition leads to an overcrowding effect in maize

Jiang¹,

Kongjun²,

Jiang³

et al. 2009

Can. J. Plant Sci.

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P. 2009. Interplant root competition leads to overcrowding effect in maize. Can. J. Plant Sci. 89: 1041Á1045. We conducted an experiment with two maize hybrids (Zea mays L.) to examine the effect of interplant root competition on root growth and to evaluate the impact to total plant performance. Two maize hybrids (Jinhai 5 and Denghai 3719) were grown either with no root competition in their own plot (owners) or as individuals sharing twice the space and nutrients (sharers). Plants were sampled every other week after pollination to track changes in root and shoot biomass. The carbohydrate allocation was smaller in the roots of sharers compared with owners at the pro-phase of grain filling and shoot accumulation was slightly accelerated during this period. However, at the lag phase, the accumulation rate in the shoots of individual plants was distinctly lower than in owners, as a result of earlier root senescence. Overall, shoot mass was reduced by 8% in sharers of both hybrids, while they showed a similar root to shoot ratio compared with the owners. Although the ''sharing'' treatment was confounded by larger soil spaces, the effects of larger soil volume and interplant root competition were different, and demonstrate that interplant root competition has an inhibitory effect on roots. Maize plants displayed an overcrowding effect (or an escape strategy) by allocating more carbohydrate to the shoots at the expense of the roots when faced with interplant root competition.Key words: Overcrowding effect, interplant root competition, maize (zea mays L.), root discrimination Jiang, W., Wang, K., Jiang, G., Wu, Q., Zhang, J., Dong, S. et Liu, P. 2009. La concurrence des racines entre les plants engendre un effet de surpopulation chez le maı¨s. Can. J. Plant Sci. 89: 1041Á1045. Les auteurs ont entrepris une expe´rience avec deux hybrides du maı¨s (Zea mays L.) en vue de pre´ciser les conse´quences de la concurrence des racines entre les plants sur la croissance des racines et d'en e´valuer l'impact sur la performance ge´ne´rale de la plante. Dans ce but, ils ont cultive´les deux hybrides (Jinhai 5 et Denghai 3719) soit sans concurrence, dans leur propre parcelle (proprie´taires), soit individuellement, avec le double de l'espace et des e´le´ments nutritifs (coproprie´taires). Les plants ont e´te´e´chantillonne´s une semaine sur deux apre`s pollinisation afin de suivre l'e´volution de la biomasse des racines et des pousses. L'affectation des hydrates de carbone e´tait plus faible aux racines des coproprie´taires qu'a`celles des proprie´taires au stade pre´ce´dant le remplissage du grain et les hydrates de carbone s'accumulaient le´ge`rement plus vite dans les pousses durant cette pe´riode. Ne´anmoins, durant la phase de latence, les pousses des coproprie´taires accumulent les hydrates de carbone nettement moins vite en raison de la se´nescence acce´le´re´e des racines. Dans l'ensemble, on note une diminution de 8 % de la masse des pousses chez les deux hybrides coproprie´taires, bien que le ratio racines/pousses soit se...

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“…Por ejemplo, las podas (de formación o de saneamiento) que no siempre se realizan correctamente; la forma y tamaño de las hojas, y el manejo por parte de los usuarios, en conjunto contribuyeron a las alteraciones en las formas naturales de las copas. Las plagas persistentes como el insecto chupador Stenomacra marginella Herrich-Schaeffer y enfermedades del follaje que promueven la caída del mismo, se consideraron un resultado directo de las condiciones estresantes de sitio y manejo al que se somete el arbolado (Cibrián et al, 2000;Cibrián et al, 2007;Chacalo y Corona, 2009;Loh et al, 2003;Koeser et al , 2013;Tovar, 2007). A pesar de la presencia crónica de estos factores estresantes, el arbolado con al menos 50 % de la copa viva (percentil 50); con valores de la variable dnc entre 40 y 60 % se considera suficiente para sobrevivir en condiciones urbanas y un buen estado general de salud.…”

Section: Crown Conditionunclassified

“…Los valores de trpf indicaron que en las alamedas existen árboles con suficiente follaje en las copas para realizar funciones de fotosíntesis y respiración, pero que no son lo suficientemente densas para For example, prunings (shape and cleaning), that not only are performed in the right way; the shape and size of leaves and the management from the visitors al l together helped to modify the natural shapes of the crowns. The persistent plagues such as the sucking insect Stenomacra marginel la Herrich-Schaeffer, and the diseases of the foliage promote their shedding and they were taken as a direct result of the stressing conditions of the site and management to which the trees are subjected (Cibrián et al, 2000;Cibrián et al, 2007;Chacalo and Corona, 2009;Loh et al, 2003;Koeser et al, 2013;Tovar, 2007). In spite of the chronic presence of these stressing factors, the trees with at least 50 % of the live crown (50 percentile); with values of the dnc variable within the 40 -60 % range is considered as satisfactory to survive under urban conditions and in good health in general.…”

Section: Crown Conditionmentioning

confidence: 99%

Indicador condición de copa y su aplicación en tres parques del Distrito Federal

Hernández

Alcalá

López

et al. 2018

RMCF

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El indicador condición de copa se usa para estimar la proporción de árboles con alta muerte regresiva o densidad de copa que se considere inferior o distinta a la forma natural del árbol. Las copas grandes y densas se relacionan con tasas de crecimiento altas, mientras que copas pequeñas y escasas indican sitios con condiciones desfavorables para el desarrollo de las especies forestales. Este indicador proporcionó información confiable para diagnosticar el estado general de salud del arbolado urbano. Los sitios elegidos fueron parques dentro del Distrito Federal conocidos como Alamedas Oriente, Norte y Sur. Durante la época de lluvias (mayo a octubre de 201) se realizaron tres muestreos y uno durante la época seca (noviembre de 201 a abril de 2012). Las variables registradas fueron densidad de copa (dnc), transparencia de follaje (trpf) y muerte regresiva (mr) en incrementos porcentuales (5 %) de 0 a 100. Se elaboraron pruebas de normalidad, análisis de varianza y pruebas no paramétricas U de Mann-Whitney y Kruskal-Wallis. Los resultados de estas últimas pruebas estadísticas indicaron que el arbolado de Alameda Oriente presentó los valores más altos de densidad de copa y los valores más bajos de muerte regresiva, lo que sugiere un buen estado general de salud. En contraste, el de la Alameda Norte registró valores más altos de muerte regresiva, por lo que su condición general de salud se consideraría como la más precaria de las tres Alamedas.

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Growth response of Ficus benjamina to limited soil volume and soil dilution in a skeletal soil container study

Cited by 27 publications

References 21 publications

Plant Physiological, Morphological and Yield-Related Responses to Night Temperature Changes across Different Species and Plant Functional Types

Plant Physiological, Morphological and Yield-Related Responses to Night Temperature Changes across Different Species and Plant Functional Types

Interplant root competition leads to an overcrowding effect in maize

Indicador condición de copa y su aplicación en tres parques del Distrito Federal

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