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Mulatya, Jackson; Wilson, J.; Ong, C. K.; Deans, J. D.; Sprent, Janet I.

doi:10.1023/a:1021165830511

Cited by 20 publications

(5 citation statements)

References 12 publications

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“…Thus data sets for individual species over time are not abundant, the sample sizes per age class where these data exist are generally small or limited to one age class only (e.g. Danjon et al 1999;Mulatya et al 2002;Docker and Hubble 2008), and thus the statistical power of many relationships are generally limited by small sample sizes. Nevertheless, such data, be they from replicated trials or from single tree observations, are necessary to both improve our general understanding of a species' performance and to develop, calibrate, and validate either conceptual or quantitative models that incorporate root information for use in predicting the effects of vegetation on slope stability (Ekanayake & Phillips 1999, 2002Schwarz et al 2010;Phillips et al 2011;Stokes et al 2014) and hence the effectiveness of revegetation policies (Phillips et al 2013b).…”

Section: Introductionmentioning

confidence: 99%

Observations of “coarse” root development in young trees of nine exotic species from a New Zealand plot trial

Phillips

Marden

Lambie

2015

N.Z. j. of For. Sci.

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Background: Forests and wide-spaced trees are used widely in New Zealand to control erosion from shallow landslides. Species that offer similar or better levels of protection to those currently used are sought to meet future needs. Determining what plants to use and when they become effective is important for developing guidelines and policy for land management. This study aimed to obtain data on above-and below-ground plant growth for young exotic tree species considered potential candidates for future 'erosion control forests'. Methods: The above-and below-ground growth of nine exotic tree species was assessed annually for 3 years from planting in a randomised block field trial. Whole trees were excavated and destructively sampled and several below-ground metrics (total root length of all roots > 1 mm in diameter, lateral root spread, total root biomass) assessed. Results: Differences between species for most metrics at the time of planting carried through to Year 3. The best performing species across most metrics was alder, followed by blackwood, cherry, and cypress. Allometric models relating total root length and below-ground biomass to root collar diameter were established. Conclusion: Top performers with regard to root metrics were alder, cherry, and cypress followed by blackwood, radiata, and redwood. Root information contributes to improving our understanding of how and when, and at what planting density, plants become effective for controlling erosion in New Zealand.

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Section: Introductionmentioning

confidence: 99%

Observations of “coarse” root development in young trees of nine exotic species from a New Zealand plot trial

Phillips

Marden

Lambie

2015

N.Z. j. of For. Sci.

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“…When grafting tomato ( Solanum lycopersicum L.), eggplant ( Solanum melongena L.), and bell pepper ( Capsicum annuum L.) plants, seedlings are used as rootstocks and scions, and it is important that they are healthy and uniform in size at the time of grafting [ 29 , 30 , 31 ]. Studies have shown that the method of propagation influences root architecture, with stem cuttings developing shallower roots compared to seedlings [ 32 , 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

The Efficiency of CBD Production Using Grafted Cannabis sativa L. Plants Is Highly Dependent on the Type of Rootstock: A Study

Bitežnik,

Štukelj,

Flajšman

2024

Plants

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The global cannabis market is continuously expanding and as a result, the cannabis industry demands new and improved agronomic cultivation practices to increase production efficiency of cannabidiol (CBD), which is valued for its therapeutic benefits. This study investigates the influence of three rootstock types on the survival rate, morphological parameters, and biochemical composition of cannabis: potentially dwarfing rootstocks (PDR), potentially vigorous rootstocks (PVR), and seedlings-as-rootstocks (SAR). Rootstocks were used for grafting two scion genotypes: ‘ScionII’ = chemotype II of industrial hemp, and ‘ScionIII’ = chemotype III of high CBD accumulating variety. Contrary to expectations, PVR and SAR did not outperform PDR on most of the measured variables. SAR showed the highest survival rate of the grafted cannabis plants (40–70%). The rootstock type had a statistically significant influence only on the bud compactness index in ‘ScionII’, with PDR being particularly noticeable. A comparative analysis of the ‘rootstock/scion’ combinations with their controls (non-grafted scions) revealed grafting’s substantial improvement in most traits. Specifically, PDR increased CBD content by 27% in ‘ScionIII’, inflorescence yield and CBD yield per plant increased by 71% and 84%, respectively, when SAR was used in ‘ScionII’. SAR showed to be the most effective rootstock type for CBD production. Our findings suggest grafting as a promising technique for optimizing cannabis’s agronomic and medicinal potential, highlighting the necessity for further research on its underlying mechanisms to refine production efficiency and quality.

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“…Melia volkensii Gürke (Mukau) is native to the arid and semi-arid savannah of Kenya, Tanzania, and Somalia [1]. The tree grows rapidly and is compatible with agroforestry [2,3]. Mukau leaves, bark, and fruit pulp are fodder [4].…”

Section: Introductionmentioning

confidence: 99%

“…Leaf and fruit extracts are used as insect repellants [8,9]. The tree is termite resistant [2,8,10] and produces hard timber, comparable to mahogany [11,12]. Pruned branches provide farmers with good firewood [2].…”

Section: Introductionmentioning

confidence: 99%

Variation of Morphological Traits and Quality Indices of Micropropagated Melia volkensii Gürke Clones before Field Planting

Dushimimana

Magomere

Mulatya

et al. 2022

Forests

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The quality of acclimatized in vitro cultivated plants is essential to ensure good survival and growth after planting in field conditions. After two months of acclimatization, this study revealed a significant variation in survival rate, shoot characteristics, root traits, and biomass features between 13 clones of Melia volkensii Gürke. A number of quality indices such as the Dickson Quality Index (DQI), shoot dry weight: root dry weight ratio (S:R), and sturdiness quotient (SQ) also showed a large variation. The survival rate was genotype-dependent, with an average of 85%. Extreme genotypes were tall, had long internodes, a lot of leaves, and a large leaf area. At the other side of the spectrum, there were small clones with short internodes and a reduced number of leaves and leaf areas. The high S:R values (>2) of the evaluated clones indicate an imbalance between the shoot and root system, negatively influencing the quality of the in vitro produced M. volkensii plants. The SQ for all clones was below the threshold value of 6, implying a good and expected survival rate. This study illustrates that some clones might systematically score better for SQ, S:R, plant volume, and DQI after acclimatization and that these factors could form the basis for selection.

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Abstract: Article (refereed)Mulatya

Cited by 20 publications

References 12 publications

Observations of “coarse” root development in young trees of nine exotic species from a New Zealand plot trial

Observations of “coarse” root development in young trees of nine exotic species from a New Zealand plot trial

The Efficiency of CBD Production Using Grafted Cannabis sativa L. Plants Is Highly Dependent on the Type of Rootstock: A Study

Variation of Morphological Traits and Quality Indices of Micropropagated Melia volkensii Gürke Clones before Field Planting

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