Comparative study of the inflorescence, spikelet and flower development in species of Cynodonteae (Chloridoideae, Poaceae)
| Autor: | Abelardo Carlos Vegetti, Vanesa Pilatti, Nora G. Uberti-Manassero, Renata Reinheimer, Sebastián E. Muchut |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Inflorescences
biology SPIKELET Inflorescencias DEVELOPMENTAL NOVELTIES Espiguilla Plant Science Poaceae biology.organism_classification BRANCHING Flowering GRASSES purl.org/becyt/ford/1 [https] Inflorescence Botany Cynodonteae Chloridoideae Spikelets Floración purl.org/becyt/ford/1.6 [https] Ecology Evolution Behavior and Systematics COMMON PATTERNS FLORET |
| Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET Botanical Journal of the Linnean Society 189 (4) : 353–377 (April 2019) INTA Digital (INTA) Instituto Nacional de Tecnología Agropecuaria instacron:INTA |
| Popis: | Inflorescence morphology in Poaceae subtribes Hilariinae, Monanthochloinae, Boutelouinae, Scleropogoninae and Muhlenbergiinae (Cynodonteae, Chloridoideae) has been revisited recently, but inflorescence development remains largely unexplored. The aim of this study is to contribute additional information on the development of inflorescences in Cynodonteae by generating data on Distichlis, Bouteloua, Munroa, Erioneuron and Muhlenbergia and to compare them with results for other grasses. Using scanning electron microscopy images, we identified common developmental patterns among grasses and described developmental novelties for Bouteloua, Distichlis and Muhlenbergia. Novel developmental features are: the amphipetal initiation of second-order branches along the inflorescence of B. curtipendula, the elongation of the internodes of the inflorescence branches before floral development in M. asperifolius and ‘Type II’ unisexual flowers in D. acerosa. Variable traits among studied species are: inflorescence symmetry, direction of branch and spikelet initiation and differentiation, number of developing stamens, glume developmental patterns and timing of the arrest of gynoecium development during the formation of unisexual flowers. Our results allow us to postulate that a delicate balance of phytohormones may direct early development of grass inflorescence branching system by controlling direction of first-order branch differentiation. The approach used here provides a link between definitive structures and the underlying genetics. EEA Rafaela Fil: Pilatti, Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Pilatti, Vanesa. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Rafalea; Argentina Fil: Pilatti, Vanesa. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; Argentina Fil: Muchut, Sebastián Elías. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; Argentina Fil: Muchut, Sebastián Elías. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Uberti Manassero, Nora Graciela. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina Fil: Uberti Manassero, Nora Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral; Argentina Fil: Vegetti, Abelardo Carlos. Universidad Nacional del Litoral. Facultad de Ciencias Agrarias; Argentina Fil: Vegetti, Abelardo Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe; Argentina Fil: Reinheimer, Renata. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral; Argentina Fil: Reinheimer, Renata. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina |
| Databáze: | OpenAIRE |
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