Seasonal pattern of biomass and rubber and inulin of wild Russian dandelion (Taraxacum koksaghyz L. Rodin) under experimental field conditions

Kreuzberger, Marie; Hahn, Thomas; Schiemann, Joachim; Thiele, Katja

doi:10.1016/j.eja.2016.06.011

Cited by 43 publications

(47 citation statements)

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“…Rubber accumulation in TK begins at germination, peaks at around one year, and then levels off or decreases due to older root tissues being shed and destroyed by microorganisms [9]. Kreuzberger et al [10] concluded that "the life cycle of TK as a perennial plant makes it a candidate for cultivation as an annual or a biennial crop". As an annual, it would have a growing period of 180-220 days based on average frost free dates in the temperate zone.…”

Section: Literature Reviewmentioning

confidence: 99%

“…TK seeds are small, with about 1 million seeds per pound [10,12]. Artschwager and McGuire [13] stated that the TK seeds readily germinate and observed that despite the early development of a strong root system in the seedling, there is a slow expansion of the leaf rosette, which has only minute-sized individual leaves, for two or more months.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Seed size-raw~1 mm diameter;~4 mm length [12] Seed mass-raw 0.50 ± 0.06 mg/seed (~2 million seed/kg) [10] Seed treatment Recommended stratification at 0-2 • C for 14 days and priming seed. [7,14] Seed treatment (1) Pelleted seed improves handling/planting seed.…”

Section: Characteristicmentioning

confidence: 99%

“…[15] Seed size-pelleted Diameter~3 mm (~45,850 seeds/kg) [15] Planting depth On surface to 1.31 cm deep [12] Planting depth Recommended <1.27 cm deep [15] Planting depth Used 0.5-1.0 cm depth. [10] Planting practices Used mulch to improve emergence. [7] Planting/harvesting (1) Plant in spring, harvest in fall or following spring.…”

Section: Characteristicmentioning

confidence: 99%

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Progress in Direct Seeding of an Alternative Natural Rubber Plant, Taraxacum kok-saghyz (L.E. Rodin)

et al. 2018

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Natural rubber (NR) is currently sourced from a single species Hevea brasiliensis, which is primarily grown in Southeast Asia and Africa. The Taraxacum kok-saghyz (L.E. Rodin) (TK) plant, which grows in temperate climates and has NR in its roots, has been identified as an additional source for NR in the future. A major challenge to TK becoming a crop is direct seeding. This paper presents research on determining strategies for improving establishment of TK through direct seeding. Field trials were conducted in 2014 and 2015 in Ohio on a Wooster silt loam soil (2.4–2.9% OM) using “wild” TK seed. The study evaluated the impacts of different planting dates (April and May), planter types (broadcasting raw seed and drilling pelleted seed), companion crops, and compost mulch strips on plant stands (i.e., visible TK plant/TK seed drop). Results indicated that drilling of pelleted seed to a depth of 0.6 cm into a thin layer (<1.27 cm) of compost mulch after soil temperatures reach 16 °C (mid-May in Northern Ohio) would give the highest stand by the fall harvest season. These studies provide insight into direct seeding of TK and a baseline to use for evaluating future generations of TK.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Section: Characteristicmentioning

confidence: 99%

Section: Characteristicmentioning

confidence: 99%

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Progress in Direct Seeding of an Alternative Natural Rubber Plant, Taraxacum kok-saghyz (L.E. Rodin)

et al. 2018

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“…Although rubber-bearing plant species such as Taraxacum kok-saghyz and Parthenium argentatum have lately reemerged on the research and development scene as potential alternative sources of natural rubber (van Beilen and Poirier 2007a, 2007b, Rasutis et al 2015, Kreuzberger et al 2016, Dong et al 2017, Ramirez-Cadavid et al 2017, Soratana et al 2017, the Para rubber tree (Hevea brasiliensis) has retained its status as the sole viable source of natural rubber, which does not seem set to change in the near future (Cornish 2017). Global consumption of natural rubber has exceeded 12 million metric tons in the last three years according to the International Rubber Study Group (IRSG 2017).…”

Section: Introductionmentioning

confidence: 99%

Climate change impact assessment on the potential rubber cultivating area in the Greater Mekong Subregion

Golbon

Cotter

Sauerborn

2018

Environ. Res. Lett.

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In order to map potential shifts of rubber (Hevea brasiliensis) cultivation as a consequence of the ongoing climate change in the Greater Mekong Subregion (GMS), we applied rule-based classifications to a selection of nine gridded climatic data projections (precipitation and temperature, and global circulation models (GCMs)). These projections were used to form an ensemble model set covering the representative concentration pathways (RCPs) 4.5 and 8.5 of the Fifth Assessment Report of the Intergovernmental Panel on Climate Change at three future time sections: 2030, 2050 and 2070. We used a post classification ensemble formation technique based on a majority outcome of the classification to not only provide an ensemble projection but also to spatially track and weight the disagreements between the classified GCMs. A similar approach was used to form an ensemble model aggregating the involved climatic factors. The level of agreement between the ensemble projections and GCM products was assessed for each climatic factor separately, and also at the aggregate level. Shifting zones with high confidence were clustered based on their land use composition, physiographic attributes and proximity. Following the same ensemble formation technique and by setting a 28• C threshold for annual mean temperature, we mapped areas prone to exposure to potentially excessive heat levels. Almost the entire shift projected with high certainty was in the form of expansion, associated with temperature components of climate and temporally limited to the 2030 time window where the total area conducive to rubber cultivation in the GMS is projected to exceed 50% by 2030 (from 44.3% at the turn of the century). The largest detected cluster (41% of the total shifting area), which also is the most ecologically degraded, corresponds to Northern Vietnam and Guangxi Autonomous Region of China. The area exposed to potentially excessive heat is projected to undergo a 25-fold increase under RCP4.5 by 2030 from 14568 km 2 at the baseline.

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Characterization of natural rubber concerning its components and molecular weight in Taraxacum kok‐saghyz Rodin using pyrolysis gas chromatography‐mass spectrometry

Wang,

Fan,

et al. 2023

J of Separation Science

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Taraxacum kok‐saghyz Rodin (TKS) has abundant natural rubber in its root and the molecular weight of its natural rubber is higher than that in Hevea brasiliensis. Thus, TKS is an excellent alternative for the commercial production of natural rubber. The content and molecular weight of natural rubber are two qualitative indicators. Efficient determination for both indicators is still a challenge. In this study, we developed a method to simultaneously determine the content and molecular weight of natural rubber in TKS with pyrolysis－gas chromatography‐mass spectrometry. The content of natural rubber was quantified by internal standard method. We optimized the pyrolysis temperature and chromatographic method during content determination. The limits of detection and quantification were 0.47 and 1.56 μg, respectively. In addition, the arachidonic acid methyl ester, an unsaturated fatty acid proposed from the α‐end group of natural rubber, was quantified to obtain the number of natural rubber polymers. Based on the content and the polymer number, we also quantified the molecular weight of natural rubber. Thus, the content and molecular weight of natural rubber were simultaneously determined in TKS. Our study provides a new perspective for the high throughput analysis of natural rubber.

show abstract

Seasonal pattern of biomass and rubber and inulin of wild Russian dandelion (Taraxacum koksaghyz L. Rodin) under experimental field conditions

Cited by 43 publications

References 14 publications

Progress in Direct Seeding of an Alternative Natural Rubber Plant, Taraxacum kok-saghyz (L.E. Rodin)

Progress in Direct Seeding of an Alternative Natural Rubber Plant, Taraxacum kok-saghyz (L.E. Rodin)

Climate change impact assessment on the potential rubber cultivating area in the Greater Mekong Subregion

Characterization of natural rubber concerning its components and molecular weight in Taraxacum kok‐saghyz Rodin using pyrolysis gas chromatography‐mass spectrometry

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