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Walter Kuhbauch - One of the best experts on this subject based on the ideXlab platform.

  • Modellversuch zur Beschreibung von Konkurrenzvorgängen zwischen Sommerweizen und einer aus Capsella bursa-pastoris L., Stellaria Media L. und Alopecurus myosuroides Huds. bestehenden Mischverunkrautung
    Journal of Agronomy and Crop Science, 1993
    Co-Authors: Winfried Petry, H. Wirth, Walter Kuhbauch
    Abstract:

    Investigation to Describe the Competition between Spring Wheat and a Weed Population Consisting of Capsella bursa-pastoris L., Stellaria Media L. and Alopecurus myosuroides Huds. When controlling weeds in cereals using economic threshold as criteria, weed populations must be evaluated for their potential to cause damage at a very early stage. As well as information of actual weed density or weed ground cover, further knowledge about the species specific growth and competition between weed populations is important. For this purpose the growth and competition between the weeds Capsella bursa-pastoris L., Stellaria Media L., Alopecurus myosuroides Huds. and spring wheat (Triticum aestivum L.) as a model of a typical weed mixture in cereals were studied in a container experiment. The growth with time of individual species was documented using true colour image processing. In that these measurements are non-invasive, the system lends itself specially to time-dependent analyses. The increasing amount of ground covered by leaves between two observation times served as a parameter to evaluate the increase in biomass over this time period and could be used as a evaluation of the competitiveness of the weed species studied. The results can be summarized as follows: 1) Stellaria Media L. proved to be the most competitive of the studied species. 2) The competition to spring wheat from each weed species was similar. 3) A multi species weed population had a tendenci to a lower competitiveness to spring wheat, than a weed population of only-one species. The importance of this and other similar studies for the improvement for the prediction of economic weed thresholds to estimate weed populations in early stages will be indicated.

  • Modellversuch zur Beschreibung von Konkurrenzvorgängen zwischen Sommerweizen und einer aus Capsella bursa‐pastoris L., Stellaria Media L. und Alopecurus myosuroides Huds. bestehenden Mischverunkrautung
    Journal of Agronomy and Crop Science, 1993
    Co-Authors: Winfried Petry, H. Wirth, Walter Kuhbauch
    Abstract:

    Investigation to Describe the Competition between Spring Wheat and a Weed Population Consisting of Capsella bursa-pastoris L., Stellaria Media L. and Alopecurus myosuroides Huds. When controlling weeds in cereals using economic threshold as criteria, weed populations must be evaluated for their potential to cause damage at a very early stage. As well as information of actual weed density or weed ground cover, further knowledge about the species specific growth and competition between weed populations is important. For this purpose the growth and competition between the weeds Capsella bursa-pastoris L., Stellaria Media L., Alopecurus myosuroides Huds. and spring wheat (Triticum aestivum L.) as a model of a typical weed mixture in cereals were studied in a container experiment. The growth with time of individual species was documented using true colour image processing. In that these measurements are non-invasive, the system lends itself specially to time-dependent analyses. The increasing amount of ground covered by leaves between two observation times served as a parameter to evaluate the increase in biomass over this time period and could be used as a evaluation of the competitiveness of the weed species studied. The results can be summarized as follows: 1) Stellaria Media L. proved to be the most competitive of the studied species. 2) The competition to spring wheat from each weed species was similar. 3) A multi species weed population had a tendenci to a lower competitiveness to spring wheat, than a weed population of only-one species. The importance of this and other similar studies for the improvement for the prediction of economic weed thresholds to estimate weed populations in early stages will be indicated.

Winfried Petry - One of the best experts on this subject based on the ideXlab platform.

  • Modellversuch zur Beschreibung von Konkurrenzvorgängen zwischen Sommerweizen und einer aus Capsella bursa-pastoris L., Stellaria Media L. und Alopecurus myosuroides Huds. bestehenden Mischverunkrautung
    Journal of Agronomy and Crop Science, 1993
    Co-Authors: Winfried Petry, H. Wirth, Walter Kuhbauch
    Abstract:

    Investigation to Describe the Competition between Spring Wheat and a Weed Population Consisting of Capsella bursa-pastoris L., Stellaria Media L. and Alopecurus myosuroides Huds. When controlling weeds in cereals using economic threshold as criteria, weed populations must be evaluated for their potential to cause damage at a very early stage. As well as information of actual weed density or weed ground cover, further knowledge about the species specific growth and competition between weed populations is important. For this purpose the growth and competition between the weeds Capsella bursa-pastoris L., Stellaria Media L., Alopecurus myosuroides Huds. and spring wheat (Triticum aestivum L.) as a model of a typical weed mixture in cereals were studied in a container experiment. The growth with time of individual species was documented using true colour image processing. In that these measurements are non-invasive, the system lends itself specially to time-dependent analyses. The increasing amount of ground covered by leaves between two observation times served as a parameter to evaluate the increase in biomass over this time period and could be used as a evaluation of the competitiveness of the weed species studied. The results can be summarized as follows: 1) Stellaria Media L. proved to be the most competitive of the studied species. 2) The competition to spring wheat from each weed species was similar. 3) A multi species weed population had a tendenci to a lower competitiveness to spring wheat, than a weed population of only-one species. The importance of this and other similar studies for the improvement for the prediction of economic weed thresholds to estimate weed populations in early stages will be indicated.

  • Modellversuch zur Beschreibung von Konkurrenzvorgängen zwischen Sommerweizen und einer aus Capsella bursa‐pastoris L., Stellaria Media L. und Alopecurus myosuroides Huds. bestehenden Mischverunkrautung
    Journal of Agronomy and Crop Science, 1993
    Co-Authors: Winfried Petry, H. Wirth, Walter Kuhbauch
    Abstract:

    Investigation to Describe the Competition between Spring Wheat and a Weed Population Consisting of Capsella bursa-pastoris L., Stellaria Media L. and Alopecurus myosuroides Huds. When controlling weeds in cereals using economic threshold as criteria, weed populations must be evaluated for their potential to cause damage at a very early stage. As well as information of actual weed density or weed ground cover, further knowledge about the species specific growth and competition between weed populations is important. For this purpose the growth and competition between the weeds Capsella bursa-pastoris L., Stellaria Media L., Alopecurus myosuroides Huds. and spring wheat (Triticum aestivum L.) as a model of a typical weed mixture in cereals were studied in a container experiment. The growth with time of individual species was documented using true colour image processing. In that these measurements are non-invasive, the system lends itself specially to time-dependent analyses. The increasing amount of ground covered by leaves between two observation times served as a parameter to evaluate the increase in biomass over this time period and could be used as a evaluation of the competitiveness of the weed species studied. The results can be summarized as follows: 1) Stellaria Media L. proved to be the most competitive of the studied species. 2) The competition to spring wheat from each weed species was similar. 3) A multi species weed population had a tendenci to a lower competitiveness to spring wheat, than a weed population of only-one species. The importance of this and other similar studies for the improvement for the prediction of economic weed thresholds to estimate weed populations in early stages will be indicated.

H. Wirth - One of the best experts on this subject based on the ideXlab platform.

  • Modellversuch zur Beschreibung von Konkurrenzvorgängen zwischen Sommerweizen und einer aus Capsella bursa-pastoris L., Stellaria Media L. und Alopecurus myosuroides Huds. bestehenden Mischverunkrautung
    Journal of Agronomy and Crop Science, 1993
    Co-Authors: Winfried Petry, H. Wirth, Walter Kuhbauch
    Abstract:

    Investigation to Describe the Competition between Spring Wheat and a Weed Population Consisting of Capsella bursa-pastoris L., Stellaria Media L. and Alopecurus myosuroides Huds. When controlling weeds in cereals using economic threshold as criteria, weed populations must be evaluated for their potential to cause damage at a very early stage. As well as information of actual weed density or weed ground cover, further knowledge about the species specific growth and competition between weed populations is important. For this purpose the growth and competition between the weeds Capsella bursa-pastoris L., Stellaria Media L., Alopecurus myosuroides Huds. and spring wheat (Triticum aestivum L.) as a model of a typical weed mixture in cereals were studied in a container experiment. The growth with time of individual species was documented using true colour image processing. In that these measurements are non-invasive, the system lends itself specially to time-dependent analyses. The increasing amount of ground covered by leaves between two observation times served as a parameter to evaluate the increase in biomass over this time period and could be used as a evaluation of the competitiveness of the weed species studied. The results can be summarized as follows: 1) Stellaria Media L. proved to be the most competitive of the studied species. 2) The competition to spring wheat from each weed species was similar. 3) A multi species weed population had a tendenci to a lower competitiveness to spring wheat, than a weed population of only-one species. The importance of this and other similar studies for the improvement for the prediction of economic weed thresholds to estimate weed populations in early stages will be indicated.

  • Modellversuch zur Beschreibung von Konkurrenzvorgängen zwischen Sommerweizen und einer aus Capsella bursa‐pastoris L., Stellaria Media L. und Alopecurus myosuroides Huds. bestehenden Mischverunkrautung
    Journal of Agronomy and Crop Science, 1993
    Co-Authors: Winfried Petry, H. Wirth, Walter Kuhbauch
    Abstract:

    Investigation to Describe the Competition between Spring Wheat and a Weed Population Consisting of Capsella bursa-pastoris L., Stellaria Media L. and Alopecurus myosuroides Huds. When controlling weeds in cereals using economic threshold as criteria, weed populations must be evaluated for their potential to cause damage at a very early stage. As well as information of actual weed density or weed ground cover, further knowledge about the species specific growth and competition between weed populations is important. For this purpose the growth and competition between the weeds Capsella bursa-pastoris L., Stellaria Media L., Alopecurus myosuroides Huds. and spring wheat (Triticum aestivum L.) as a model of a typical weed mixture in cereals were studied in a container experiment. The growth with time of individual species was documented using true colour image processing. In that these measurements are non-invasive, the system lends itself specially to time-dependent analyses. The increasing amount of ground covered by leaves between two observation times served as a parameter to evaluate the increase in biomass over this time period and could be used as a evaluation of the competitiveness of the weed species studied. The results can be summarized as follows: 1) Stellaria Media L. proved to be the most competitive of the studied species. 2) The competition to spring wheat from each weed species was similar. 3) A multi species weed population had a tendenci to a lower competitiveness to spring wheat, than a weed population of only-one species. The importance of this and other similar studies for the improvement for the prediction of economic weed thresholds to estimate weed populations in early stages will be indicated.

Thumballi R. Ganapathi - One of the best experts on this subject based on the ideXlab platform.

  • Transgenic banana plants expressing a Stellaria Media defensin gene (Sm-AMP-D1) demonstrate improved resistance to Fusarium oxysporum
    Plant Cell Tissue and Organ Culture (PCTOC), 2014
    Co-Authors: Siddhesh B. Ghag, Upendra K. Singh Shekhawat, Thumballi R. Ganapathi
    Abstract:

    Plant defensins are group of small, cysteine stabilized antimicrobial peptides rich in basic amino acids which inhibit growth of a multitude of phytopathogens. These defensins have been explored widely to generate transgenic crop plants resistant to varied fungal and bacterial diseases. In the present study, gene sequence coding for a seed defensin ( Sm - AMP - D1 ) of common chickweed Stellaria Media was synthesized artificially and cloned downstream of a strong constitutive promoter in pCAMBIA-1301 plant expression vector. Transgenic banana plants expressing the Sm - AMP - D1 gene were subsequently generated via Agrobacterium -Mediated genetic transformation. Transgenic nature of the regenerated banana plants was confirmed by genomic DNA PCR and Southern blotting analysis. Northern blots demonstrated efficient expression of Sm - AMP - D1 mRNA in transgenic banana plants. Further, two selected transgenic lines challenged with a pathogenic isolate of Fusarium oxysporum f. sp. cubense race 1 showed improved resistance as compared to untransformed control banana plants. These transgenic lines continued to show resistance against Foc race 1 6 months post-infection. This study demonstrates that overexpression of potent plant defensins such as Sm - AMP - D1 in important food crops like banana can lead to development of durable resistance against fungal pathogens.

  • Transgenic banana plants expressing a Stellaria Media defensin gene (Sm-AMP-D1) demonstrate improved resistance to Fusarium oxysporum
    Plant Cell Tissue and Organ Culture (PCTOC), 2014
    Co-Authors: Siddhesh B. Ghag, Upendra K. Singh Shekhawat, Thumballi R. Ganapathi
    Abstract:

    Plant defensins are group of small, cysteine stabilized antimicrobial peptides rich in basic amino acids which inhibit growth of a multitude of phytopathogens. These defensins have been explored widely to generate transgenic crop plants resistant to varied fungal and bacterial diseases. In the present study, gene sequence coding for a seed defensin (Sm-AMP-D1) of common chickweed Stellaria Media was synthesized artificially and cloned downstream of a strong constitutive promoter in pCAMBIA-1301 plant expression vector. Transgenic banana plants expressing the Sm-AMP-D1 gene were subsequently generated via Agrobacterium-Mediated genetic transformation. Transgenic nature of the regenerated banana plants was confirmed by genomic DNA PCR and Southern blotting analysis. Northern blots demonstrated efficient expression of Sm-AMP-D1 mRNA in transgenic banana plants. Further, two selected transgenic lines challenged with a pathogenic isolate of Fusarium oxysporum f. sp. cubense race 1 showed improved resistance as compared to untransformed control banana plants. These transgenic lines continued to show resistance against Foc race 1 6 months post-infection. This study demonstrates that overexpression of potent plant defensins such as Sm-AMP-D1 in important food crops like banana can lead to development of durable resistance against fungal pathogens.

Siddhesh B. Ghag - One of the best experts on this subject based on the ideXlab platform.

  • Transgenic banana plants expressing a Stellaria Media defensin gene (Sm-AMP-D1) demonstrate improved resistance to Fusarium oxysporum
    Plant Cell Tissue and Organ Culture (PCTOC), 2014
    Co-Authors: Siddhesh B. Ghag, Upendra K. Singh Shekhawat, Thumballi R. Ganapathi
    Abstract:

    Plant defensins are group of small, cysteine stabilized antimicrobial peptides rich in basic amino acids which inhibit growth of a multitude of phytopathogens. These defensins have been explored widely to generate transgenic crop plants resistant to varied fungal and bacterial diseases. In the present study, gene sequence coding for a seed defensin ( Sm - AMP - D1 ) of common chickweed Stellaria Media was synthesized artificially and cloned downstream of a strong constitutive promoter in pCAMBIA-1301 plant expression vector. Transgenic banana plants expressing the Sm - AMP - D1 gene were subsequently generated via Agrobacterium -Mediated genetic transformation. Transgenic nature of the regenerated banana plants was confirmed by genomic DNA PCR and Southern blotting analysis. Northern blots demonstrated efficient expression of Sm - AMP - D1 mRNA in transgenic banana plants. Further, two selected transgenic lines challenged with a pathogenic isolate of Fusarium oxysporum f. sp. cubense race 1 showed improved resistance as compared to untransformed control banana plants. These transgenic lines continued to show resistance against Foc race 1 6 months post-infection. This study demonstrates that overexpression of potent plant defensins such as Sm - AMP - D1 in important food crops like banana can lead to development of durable resistance against fungal pathogens.

  • Transgenic banana plants expressing a Stellaria Media defensin gene (Sm-AMP-D1) demonstrate improved resistance to Fusarium oxysporum
    Plant Cell Tissue and Organ Culture (PCTOC), 2014
    Co-Authors: Siddhesh B. Ghag, Upendra K. Singh Shekhawat, Thumballi R. Ganapathi
    Abstract:

    Plant defensins are group of small, cysteine stabilized antimicrobial peptides rich in basic amino acids which inhibit growth of a multitude of phytopathogens. These defensins have been explored widely to generate transgenic crop plants resistant to varied fungal and bacterial diseases. In the present study, gene sequence coding for a seed defensin (Sm-AMP-D1) of common chickweed Stellaria Media was synthesized artificially and cloned downstream of a strong constitutive promoter in pCAMBIA-1301 plant expression vector. Transgenic banana plants expressing the Sm-AMP-D1 gene were subsequently generated via Agrobacterium-Mediated genetic transformation. Transgenic nature of the regenerated banana plants was confirmed by genomic DNA PCR and Southern blotting analysis. Northern blots demonstrated efficient expression of Sm-AMP-D1 mRNA in transgenic banana plants. Further, two selected transgenic lines challenged with a pathogenic isolate of Fusarium oxysporum f. sp. cubense race 1 showed improved resistance as compared to untransformed control banana plants. These transgenic lines continued to show resistance against Foc race 1 6 months post-infection. This study demonstrates that overexpression of potent plant defensins such as Sm-AMP-D1 in important food crops like banana can lead to development of durable resistance against fungal pathogens.