Comparative floral and pollen morphology of some invasive and native impatiens species

Yulia Konstantinovna Vinogradova; Alla Georgievna Kuklina; Ekaterina Vasilyevna Tkacheva; Andrey Sergeevich Ryabchenko; Maksim Igorevich Khomutovskiy; Olga Vladimirovna Shelepova

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Comparative floral and pollen morphology of some invasive and native impatiens species

Vinogradova, Yulia Konstantinovna ^[1] ; Kuklina, Alla Georgievna ^[1] ; Tkacheva, Ekaterina Vasilyevna ^[1] ; Ryabchenko, Andrey Sergeevich ^[3] ; Khomutovskiy, Maksim Igorevich ^[2] ; Shelepova, Olga Vladimirovna ^[1]
1. [1] Russian Academy of Sciences
  
  Russian Academy of Sciences
  
  Rusia
2. [2] Moscow State University
  
  Moscow State University
  
  Rusia
3. [3] Candidate of biological Sciences, Senior researcher Laboratory of physilogy and immunity of plants, Tsitsin Main Moscow Botanical Garden of the Russian Academy of Sciences (Moscow, Russia)
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Localización: Revista de la Universidad del Zulia, ISSN-e 2665-0428, ISSN 0041-8811, Vol. 11, Nº. 30, 2020 (Ejemplar dedicado a: Revista de la Universidad del Zulia, Número 30, Mayo-Agosto 2020, Ciencias Exactas, Naturales y de la Salud), págs. 315-335
Idioma: inglés
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Resumen
- To evaluate the hypothesis of competitive superiority of invasive species, we compared the invasive Impatiens parviflora DC. and I. Glandulifera royle, the naturalized I. Nevskii pobed. and the native I. Noli-tangere L. in the flowers’ morphometric characters at different phases of anthesis. The characters in which alien species have a competitive superiority over closely related I. Noli-tangere are revealed. Morphological variability was studied by morphometric observations of the following characters: bud: length and diameter; spurred sepal: length and width; spur: length and diameter; lateral sepal: length and width; largest petal: length and death; large lobe of lateral petal: length and width; small lobe of lateral petal: length and width; anther: length; stamen’s filament: length; calyptra: length and width; ovary: length and diameter; length of a style, length of a stigma. There is a tendency for alien Impatiens species of the earlier development of androecium and gynoecium: сaliptra is formed at the stage of uncolored bud, the pistil is differentiated in ovary, short style and stigma is formed at the stage of colored bud. No other flowers’ morphometric characters, representing competitive advantage of the invasive I. Glandulifera and I. Parviflora over the native I. Noli-tangere and naturalized I. Nevskii were identified.