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Charlyn G. Partridge - One of the best experts on this subject based on the ideXlab platform.
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Combining herbarium databases and genetic methods to evaluate the invasion of a popular Horticultural Species, baby’s breath (Gypsophila paniculata), in the United States
Biological Invasions, 2020Co-Authors: Sarah K. Lamar, Charlyn G. PartridgeAbstract:Gypsophila paniculata (baby’s breath) is a popular garden ornamental and Horticultural crop introduced to North America in the late 1800s. After introduction it quickly spread, often forming dense monotypic stands and crowding out native Species. To better understand this invasion, samples of G. paniculata from seven distinct populations spanning a portion of the plant’s invaded range within the United States (Washington, North Dakota, Minnesota, and Michigan) were collected and genotyped using 14 microsatellite loci. Population structure was inferred using both Bayesian and multivariate methods. The results suggest the presence of at least two genetic clusters among the seven sampling locations, with samples from Washington, North Dakota, Minnesota, and northwestern Michigan forming one genetic cluster and the second cluster consisting of two more southern sampling locations in Michigan. Public herbarium records were used to examine the invasion status (expansion vs. plateau phase) of the identified genetic clusters for G. paniculata . Invasion curves were created from a database of 351 herbarium collections dating from the late 1800s to current day. Results showed that time periods of invasion differed between the two genetics clusters, suggesting at least two invasion events. Patterns of reduced genetic diversity within the earlier invasion could reflect limited standing genetic variation during the initial period of this Horticultural Species’ import. This study emphasizes how anthropogenic influences can shape the study of invasive plant ecology, particularly when considering Species popular in the botanical or Horticultural industries.
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combining herbarium databases and genetic methods to evaluate the invasion of a popular Horticultural Species baby s breath gypsophila paniculata in the united states
Biological Invasions, 2020Co-Authors: Sarah K. Lamar, Charlyn G. PartridgeAbstract:Gypsophila paniculata (baby’s breath) is a popular garden ornamental and Horticultural crop introduced to North America in the late 1800s. After introduction it quickly spread, often forming dense monotypic stands and crowding out native Species. To better understand this invasion, samples of G. paniculata from seven distinct populations spanning a portion of the plant’s invaded range within the United States (Washington, North Dakota, Minnesota, and Michigan) were collected and genotyped using 14 microsatellite loci. Population structure was inferred using both Bayesian and multivariate methods. The results suggest the presence of at least two genetic clusters among the seven sampling locations, with samples from Washington, North Dakota, Minnesota, and northwestern Michigan forming one genetic cluster and the second cluster consisting of two more southern sampling locations in Michigan. Public herbarium records were used to examine the invasion status (expansion vs. plateau phase) of the identified genetic clusters for G. paniculata. Invasion curves were created from a database of 351 herbarium collections dating from the late 1800s to current day. Results showed that time periods of invasion differed between the two genetics clusters, suggesting at least two invasion events. Patterns of reduced genetic diversity within the earlier invasion could reflect limited standing genetic variation during the initial period of this Horticultural Species’ import. This study emphasizes how anthropogenic influences can shape the study of invasive plant ecology, particularly when considering Species popular in the botanical or Horticultural industries.
Sarah K. Lamar - One of the best experts on this subject based on the ideXlab platform.
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Combining herbarium databases and genetic methods to evaluate the invasion of a popular Horticultural Species, baby’s breath (Gypsophila paniculata), in the United States
Biological Invasions, 2020Co-Authors: Sarah K. Lamar, Charlyn G. PartridgeAbstract:Gypsophila paniculata (baby’s breath) is a popular garden ornamental and Horticultural crop introduced to North America in the late 1800s. After introduction it quickly spread, often forming dense monotypic stands and crowding out native Species. To better understand this invasion, samples of G. paniculata from seven distinct populations spanning a portion of the plant’s invaded range within the United States (Washington, North Dakota, Minnesota, and Michigan) were collected and genotyped using 14 microsatellite loci. Population structure was inferred using both Bayesian and multivariate methods. The results suggest the presence of at least two genetic clusters among the seven sampling locations, with samples from Washington, North Dakota, Minnesota, and northwestern Michigan forming one genetic cluster and the second cluster consisting of two more southern sampling locations in Michigan. Public herbarium records were used to examine the invasion status (expansion vs. plateau phase) of the identified genetic clusters for G. paniculata . Invasion curves were created from a database of 351 herbarium collections dating from the late 1800s to current day. Results showed that time periods of invasion differed between the two genetics clusters, suggesting at least two invasion events. Patterns of reduced genetic diversity within the earlier invasion could reflect limited standing genetic variation during the initial period of this Horticultural Species’ import. This study emphasizes how anthropogenic influences can shape the study of invasive plant ecology, particularly when considering Species popular in the botanical or Horticultural industries.
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combining herbarium databases and genetic methods to evaluate the invasion of a popular Horticultural Species baby s breath gypsophila paniculata in the united states
Biological Invasions, 2020Co-Authors: Sarah K. Lamar, Charlyn G. PartridgeAbstract:Gypsophila paniculata (baby’s breath) is a popular garden ornamental and Horticultural crop introduced to North America in the late 1800s. After introduction it quickly spread, often forming dense monotypic stands and crowding out native Species. To better understand this invasion, samples of G. paniculata from seven distinct populations spanning a portion of the plant’s invaded range within the United States (Washington, North Dakota, Minnesota, and Michigan) were collected and genotyped using 14 microsatellite loci. Population structure was inferred using both Bayesian and multivariate methods. The results suggest the presence of at least two genetic clusters among the seven sampling locations, with samples from Washington, North Dakota, Minnesota, and northwestern Michigan forming one genetic cluster and the second cluster consisting of two more southern sampling locations in Michigan. Public herbarium records were used to examine the invasion status (expansion vs. plateau phase) of the identified genetic clusters for G. paniculata. Invasion curves were created from a database of 351 herbarium collections dating from the late 1800s to current day. Results showed that time periods of invasion differed between the two genetics clusters, suggesting at least two invasion events. Patterns of reduced genetic diversity within the earlier invasion could reflect limited standing genetic variation during the initial period of this Horticultural Species’ import. This study emphasizes how anthropogenic influences can shape the study of invasive plant ecology, particularly when considering Species popular in the botanical or Horticultural industries.
Alexandru Fira - One of the best experts on this subject based on the ideXlab platform.
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The Direct Ex Vitro Rooting and Acclimation of Some Horticultural Species in Jiffy7 Pellets
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Animal Science and Biotechnologies, 2012Co-Authors: Alexandru Fira, Doina Clapa, Liviu A. VescanAbstract:Several researchers have used Jiffy7 pellets for direct ex vitro rooting and acclimation as well as for rooting cuttings. At the Fruit Research Station Cluj experiments were carried out for the direct ex vitro rooting and acclimation of some Horticultural Species in Jiffy7 pellets in order to avoid the expensive and labour-intensive in vitro rooting phase. Polyproplylene multi-purpose trays covered with transparent lids were used as culture vessels, in order to ensure optimal air humidity. The ex vitro rooting and acclimation phases were of one month and most Species had high survival rates.
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Alternative gelling agents for the micropropagation of some Horticultural Species.
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture, 2010Co-Authors: Doina Clapa, Alexandru FiraAbstract:The research was done in order to test the possibility of using some gelling agents for the nutritive media which should be less costly than agar, for the micropropagation of some Horticultural Species (Jain, 2005). The multiplication cycle was of 2 months. 820 ml jars were used as culture vessels. Tab. 1 presents the gelling agent, the Species used in the experiment, the variants of nutritive media and the resulting multiplication rates. The Species that were studied presented multiplication rates similar to the ones in agar-gelled media and the plants were vigorous.
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Ex-Vitro Acclimation of some Horticultural Species in Hydroculture
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture, 2009Co-Authors: Alexandru Fira, Doina ClapaAbstract:At the Fruit Research Station of Cluj a simple and efficient ex-vitro acclimation method for in vitro-rooted plantlets was set up for various Horticultural Species. This method consists of transferring the rooted plantlets into uncapped glass or plastic vessels containing a layer of 1-3 cm of water that should not reach above root level. The water should have an optimal pH for each Species for which this acclimation method is applied. Acclimation is accomplished in 3-4 weeks, during which the plantlets grow faster than in the case of the classical acclimation on solid substrate and they generate new roots, being suitable for planting into pots. This technique was successfully applied for a large number of Species: raspberry, blackberry (Rubus sp), black currant (Ribes nigrum), highbush blueberry (Vaccinium corymbosum), plum tree (Prunus domestica), cherry rootstock Prunus cerasus), rose (Rosa sp.), Kalanchoe blossfeldiana, Iresine sp., Exacum affine, geranium (Chrysanthemum sp.) ornamental tomato (Lycopersicon esculentum), cornichon cucumber (Cucumis sativus), watermelon (Citrullus vulgaris), Luffa cylindrica, Sequoia sempervirens, Drosera rotundifolia and Cymbidium.
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PROLONGING THE IN VITRO CULTURE MAINTEINANCE PERIOD IN SOME Horticultural Species
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture, 2008Co-Authors: Alexandru Fira, Doina ClapaAbstract:The aim of our research was to prolong the in vitro culture period in Species Haworthia cymbiformis, Exacum affine and Drosera rotundifolia. For Drosera rotundifolia two layers of media were used, both hormone-free MS. The liquid medium was poured over the plants that have been grown in agar gelled media for two months. The resulting plantlets have been counted and weighed after nine more months of in vitro culture. For Exacum affine 3 experimental va
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THE USE OF PERLITE AS SUPPORT IN LIQUID MEDIA FOR THE IN VITRO ROOTING OF SOME Horticultural Species
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture, 2008Co-Authors: Doina Clapa, Alexandru FiraAbstract:The experiments have been done with the following Species: Rosa sp. (Fig.1), Iresine sp. (Fig.2), Sequoia sempervirens (Fig. 3), Rubus sp and Ribes nigrum (Fig.4). Nutritive medium: in the Magenta vessels perlite wass added (approx. 10 g) onto which liquid MS medium was added (approx. 100 ml) until it covered the perlite and the vessels were autoclaved for 20 minutes at 121 °C.
Doina Clapa - One of the best experts on this subject based on the ideXlab platform.
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The Direct Ex Vitro Rooting and Acclimation of Some Horticultural Species in Jiffy7 Pellets
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Animal Science and Biotechnologies, 2012Co-Authors: Alexandru Fira, Doina Clapa, Liviu A. VescanAbstract:Several researchers have used Jiffy7 pellets for direct ex vitro rooting and acclimation as well as for rooting cuttings. At the Fruit Research Station Cluj experiments were carried out for the direct ex vitro rooting and acclimation of some Horticultural Species in Jiffy7 pellets in order to avoid the expensive and labour-intensive in vitro rooting phase. Polyproplylene multi-purpose trays covered with transparent lids were used as culture vessels, in order to ensure optimal air humidity. The ex vitro rooting and acclimation phases were of one month and most Species had high survival rates.
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Alternative gelling agents for the micropropagation of some Horticultural Species.
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture, 2010Co-Authors: Doina Clapa, Alexandru FiraAbstract:The research was done in order to test the possibility of using some gelling agents for the nutritive media which should be less costly than agar, for the micropropagation of some Horticultural Species (Jain, 2005). The multiplication cycle was of 2 months. 820 ml jars were used as culture vessels. Tab. 1 presents the gelling agent, the Species used in the experiment, the variants of nutritive media and the resulting multiplication rates. The Species that were studied presented multiplication rates similar to the ones in agar-gelled media and the plants were vigorous.
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Ex-Vitro Acclimation of some Horticultural Species in Hydroculture
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture, 2009Co-Authors: Alexandru Fira, Doina ClapaAbstract:At the Fruit Research Station of Cluj a simple and efficient ex-vitro acclimation method for in vitro-rooted plantlets was set up for various Horticultural Species. This method consists of transferring the rooted plantlets into uncapped glass or plastic vessels containing a layer of 1-3 cm of water that should not reach above root level. The water should have an optimal pH for each Species for which this acclimation method is applied. Acclimation is accomplished in 3-4 weeks, during which the plantlets grow faster than in the case of the classical acclimation on solid substrate and they generate new roots, being suitable for planting into pots. This technique was successfully applied for a large number of Species: raspberry, blackberry (Rubus sp), black currant (Ribes nigrum), highbush blueberry (Vaccinium corymbosum), plum tree (Prunus domestica), cherry rootstock Prunus cerasus), rose (Rosa sp.), Kalanchoe blossfeldiana, Iresine sp., Exacum affine, geranium (Chrysanthemum sp.) ornamental tomato (Lycopersicon esculentum), cornichon cucumber (Cucumis sativus), watermelon (Citrullus vulgaris), Luffa cylindrica, Sequoia sempervirens, Drosera rotundifolia and Cymbidium.
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PROLONGING THE IN VITRO CULTURE MAINTEINANCE PERIOD IN SOME Horticultural Species
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture, 2008Co-Authors: Alexandru Fira, Doina ClapaAbstract:The aim of our research was to prolong the in vitro culture period in Species Haworthia cymbiformis, Exacum affine and Drosera rotundifolia. For Drosera rotundifolia two layers of media were used, both hormone-free MS. The liquid medium was poured over the plants that have been grown in agar gelled media for two months. The resulting plantlets have been counted and weighed after nine more months of in vitro culture. For Exacum affine 3 experimental va
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THE USE OF PERLITE AS SUPPORT IN LIQUID MEDIA FOR THE IN VITRO ROOTING OF SOME Horticultural Species
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Horticulture, 2008Co-Authors: Doina Clapa, Alexandru FiraAbstract:The experiments have been done with the following Species: Rosa sp. (Fig.1), Iresine sp. (Fig.2), Sequoia sempervirens (Fig. 3), Rubus sp and Ribes nigrum (Fig.4). Nutritive medium: in the Magenta vessels perlite wass added (approx. 10 g) onto which liquid MS medium was added (approx. 100 ml) until it covered the perlite and the vessels were autoclaved for 20 minutes at 121 °C.
Danny Geelen - One of the best experts on this subject based on the ideXlab platform.
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Adventitious Rooting and Browning are Differentially Controlled by Auxin in Rooting-Recalcitrant Elegia capensis (Burm. f.) Schelpe
Journal of Plant Growth Regulation, 2015Co-Authors: Inge Verstraeten, Danny GeelenAbstract:Industrial propagation of Horticultural Species involves adventitious root (AR) induction, which is difficult to establish in rooting-recalcitrant Species. One of these recalcitrant Species is Elegia capensis (Burm. f.) Schelpe. This monocotyledonous Species was used to investigate the correlation between tissue browning and AR formation. To evaluate the root-inducing potential of various auxin treatments, a test system using stem segments of in vitro grown Elegia shoots was developed. In addition to exogenous auxin treatments, the effect of more sucrose in the medium and the effect of different light quality were evaluated. The auxins IAA, IBA, NAA, and 2,4-D did not induce roots under standard light conditions, which confirmed the strong rooting-recalcitrance of E. capensis. However, in the dark, IBA successfully induced roots in 20–40 % of the segments, depending on the auxin concentration applied. Excised stem segments showed browning upon incubation with auxins. Browning was dependent on auxin type and concentration, yet it did not correlate with the capacity to form roots because AR formation was observed on brown stem segments. We therefore conclude that browning does not cause rooting-recalcitrance in E. capensis .