Competitive ability of selected Cyclopia Vent. rhizobia under glasshouse and field conditions

Spriggs, Amy C.; Dakora, Felix D.

doi:10.1016/j.soilbio.2006.06.009

Cited by 16 publications

(6 citation statements)

References 20 publications

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“…The relatively low rooting percentage of C. genistoides shoots under in vitro conditions can be attributed to the absence of the specifi c rhizobium strains, the presence of which is often necessary for the proper root development in legume plants (Neves et al, 2001;Spriggs and Dakora, 2007). The fact that root induction was possible only in the case of shoots elongated for 60 d can be explained by the relatively long period of time necessary for the removal of exogenous cytokinins (in that case, 2iP and TDZ), the presence of which can effectively impair root formation (Zhao et al, 2003/4;Mundhara and Rashid, 2006;Husain et al, 2007).…”

Section: Root Induction and Plant Regenerationmentioning

confidence: 99%

Micropropagation of Cyclopia genistoides, an Endemic South African Plant of Economic Importance

Kokotkiewicz

Łuczkiewicz

Hering

et al. 2012

Zeitschrift Für Naturforschung C

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An effi cient micropropagation protocol of Cyclopia genistoides (L.) Vent., an indigenous South African shrub of economic importance, was established. In vitro shoot cultures were obtained from shoot tip fragments of sterile seedlings cultured on solid Schenk and Hildebrandt (SH) medium supplemented with 9.84 μM 6-(γ,γ-dimethylallylamino)purine (2iP) and 1.0 μM thidiazuron (TDZ). Maximum shoot multiplication rate [(8.2  1.3) microshoots/explant)] was observed on this medium composition. Prior to rooting, the multiplied shoots were elongated for 60 days (two 30-days passages) on SH medium with one-half sucrose concentration, supplemented with 4.92 μM indole-3-butyric acid (IBA). The rooting of explants was only possible in the case of the elongated shoots. The highest root induction rate (54.8%) was achieved on solid SH medium with one-half sucrose and one-half potassium nitrate and ammonium nitrate concentration, respectively, supplemented with 28.54 μM indole-3-acetic acid (IAA) and 260.25 μM citric acid. The plantlets were acclimatized for 30 days in the glasshouse, with the use of peat/gravel/perlite substrate (1:1:1). The highest acclimatization rate (80%) was obtained for explants rooted with the use of IAA-supplemented medium. The phytochemical profi le of the regenerated plants was similar to that of the reference intact plant material. HPLC analyses showed that C. genistoides plantlets obtained by the micropropagation procedure kept the ability to produce xanthones (mangiferin and isomangiferin) and the fl avanone hesperidin, characteristic of wild-growing shrubs.

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Section: Root Induction and Plant Regenerationmentioning

confidence: 99%

Micropropagation of Cyclopia genistoides, an Endemic South African Plant of Economic Importance

Kokotkiewicz

Łuczkiewicz

Hering

et al. 2012

Zeitschrift Für Naturforschung C

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“…Thus, manipulation of rhizobia microflora by inoculation may improve its distribution in the soil profile, leading to increased nodulation incidences of the more efficient rhizobium types. This is important as the effectiveness of indigenous or native populations of Rhizobium may be suboptimal resulting in a benefit from augmentation, as even the indigenous Rhizobium appeared to be more prolific than the inoculated rhizobium in the post establishment phase (Spriggs & Dakora, 2007). The constant removal of biomass at harvest results in the continuous depletion of the already nutrient-poor soil in the natural production areas of honeybush.…”

Section: Soil Environmentmentioning

confidence: 99%

“…Symbiotic relationships of Cyclopia spp. With rhizobia may alleviate such stress conditions and even promote growth (Spriggs & Dakora, 2007, 2008). Spriggs and Dakora (2008) evaluated the efficacy of four rhizobia strains (PPRICI3, UCT40a, UCT44b, and UCT 61a) for their ability to stimulate growth in C. subternata and C .…”

Section: Cultivation Aspects Of Honeybushmentioning

confidence: 99%

Propagation and cultivation practices of honeybush (Cyclopia spp.) for the sustainable production of an export quality indigenous South African tea

et al. 2022

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Honeybush (Cyclopia) species are endemic to the Fynbos Biome of the Cape Floral Kingdom in South Africa. Traditionally, honeybush foliage is cut, fermented, and sun-dried to make an antioxidant-rich herbal tea. Approximately 80% of honeybush is unsustainably harvested from the wild. All commercial species are indicated on the International Union for Conservation of Nature Red List of Threatened Species. Cultivation is thus required to ensure sufficient volumes of tea are produced. A major limitation to cultivation is the poor rooting responses of the species that regenerate from shoots, C. genistoides and C. intermedia, the latter being the most harvested from the wild. The establishment of clonally propagated material is a challenge for all six of the commercially important Cyclopia species. Research on honeybush has mainly focused on the unique properties contributing to flavor, medicinal value, as well as processing. Much less is known about propagation, nutrient requirements, harvesting procedures, plant improvement, and pest and disease management. This review considers management strategies for the sustainable harvesting of wild honeybush and the potential risks of introducing improved plant material. Cultivation practices and management strategies that promote longevity and enhance yield are defined. The inherent rooting ability of cuttings is discussed. Cultivated stands are mostly established by seedlings which results in diversity of vigor and tea quality. A sustainable market based on high-quality indigenous tea requires the use of clonal material which allows the selection of desired traits and rapid multiplication. Its use would enable improved yield and profitability without compromising tea quality.

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“…Sexual propagation may be practised by farmers or the government but vegetative propagation is successful in terms of propagation and mass multiplication of Poplar. Vegetative propagation has become the preferred method of propagation to maintain individual characteristics, resulting in a genetically identical plant to the original donor plant (Araya 2005;Spriggs and Dakora 2007;Bester 2013). The growth regulators have successfully been used by many researchers to increase the growth of stem cuttings of plant species (Soundy et al, 2008;Singh et al 2011;Saǧlam et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Responses of Populus deltoides’ stem cuttings under treatment of different growth hormones in planting seasons

Chhetri

Pandey

Dharmveer

2021

JANS

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The farmers have widely used vegetative propagation of plants due to the low germination percentage of seeds of various plant species. So to study the asexual propagation technique of Populus deltoides, the present study was conducted where a number of stem cuttings of Poplar were treated with growth hormones: IBA (Indole-3-butyric acid), NAA (1-Naphthaleneacetic acid) and GA3 (Gibberellic acid) at different concentrations (100 ppm, 200 ppm and 300 ppm). Some cuttings, which were not treated with hormones, considered as control. A completely randomized design was used to conduct the experiment. The responses were recorded for the cuttings, which were collected and planted in on-season (February) and off-season (July) for 30, 60 and 90 Day after planting (DAP). The results showed that the cuttings collected and planted in February month responded with the better growth rate in shoot and root parameters. The untreated cuttings showed relatively lower values for all growth parameters than the cuttings treated with hormones. Tukey HSD test of multiple comparisons revealed that IBA, at higher concentration, had significantly (P<0.05) higher values for most of the growth parameters, followed by GA3. Pearson product-moment correlation showed a very strong correlation (P>0.70) recorded for underground biomass and other parameters. These findings can allow the farmers to select the best treatment to enhance the growth and yield of P. deltoides.

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Competitive ability of selected Cyclopia Vent. rhizobia under glasshouse and field conditions

Cited by 16 publications

References 20 publications

Micropropagation of Cyclopia genistoides, an Endemic South African Plant of Economic Importance

Micropropagation of Cyclopia genistoides, an Endemic South African Plant of Economic Importance

Propagation and cultivation practices of honeybush (Cyclopia spp.) for the sustainable production of an export quality indigenous South African tea

Responses of Populus deltoides’ stem cuttings under treatment of different growth hormones in planting seasons

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