ORGANOPHYLETIC TRENDS IN SEVERAL MICROMORPHOLOGICAL FLORAL TRAITS IN THE HEXAPLOID CULTIVATED OATS (<i>AVENA</i>)

Baum, Bernard R.

doi:10.1111/j.1558-5646.1971.tb01875.x

Cited by 2 publications

(2 citation statements)

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“…Distinct morphological changes, such as the reduction of a lodicule body in Avena L., can also have an evolutionary meaning (Baum, 1971). Other structures characteristic of leaves, such as short, specialized epidermal cells, have been reported for lodicules in some grasses (Pissarek, 1971; Kosina, 2005, 2006).…”

Section: Introductionmentioning

confidence: 99%

On the leafy nature of lodicules in the genus Triticum (Poaceae)

Kosina

2010

Botanical Journal of the Linnean Society

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Lodicules are important organs creating the mating system in grasses, in a range between autogamy in clestogamous flowers and allogamy in chasmogamous flowers. This balance is the main factor determining variation patterns in plant populations. Recognition of variation in lodicule morphology is especially important in wheat, the main crop of the world. For this reason, a broad range of species of wheat was evaluated by means of characters showing the leafy nature of lodicules. The characters were studied under polarizing and epifluorescence microscopes. Development of lodicule stomata is different than that in leaves. Development of stomata and xylem, is distinctly correlated. Other short cells created by epidermal meristemoids are developmentally rather independent of both stomata and xylem. Interrelations between stomata, xylem and morphogenetic traits of the abaxial epidermis of the lodicule are illustrated by pictures and diagrams of numerical analyses, including a non-metric multidimensional scaling method. Some unthreshable wheats, such as Triticum diccocum, T. ispahanicum and T. spelta, have more leafy lodicules, but intraspecific variation appears in the form of +leafy vs. -leafy lodicules. Formation of leafy lodicule morphs does not depend on the ploidy level of wheat. An intraspecific mosaic of + or -leafy lodicules proves a mutational origin of their leafy characters.

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Section: Introductionmentioning

confidence: 99%

On the leafy nature of lodicules in the genus Triticum (Poaceae)

Kosina

2010

Botanical Journal of the Linnean Society

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“…La utilidad taxonómica de la anatomía foliar de Poaceae ha sido ampliamente reconocida en la literatura agrostológica, especialmente a nivel de subfamilia (Prat 1932, 1936, 1948, 1961, Tateoka et al 1959, Metcalfe 1960, Baum 1971, Ellis 1979, Matthei 1982, Arriaga 1983, Peterson et al 1989, Zuloaga et al 1993, Herrera & Grant 1994, Baeza 1997. Tanto la epidermis abaxial de la lámina foliar (Tateoka et al 1959, Stewart 1965, Barkworth 1981, Aiken & Lefkovitch 1984, Dávila & Clark 1990, Baeza 1997, como la epidermis de la lígula (Chaffey 1983(Chaffey , 1984(Chaffey , 1985(Chaffey , 1994) y de las brácteas de la espiguilla (glumas, lemmas y páleas) (Clark & Gould 1975, Terrel & Wergin 1981, Terrel et al 1983, Thomasson 1978, 1986, Acedo & Llamas 2001, Finot et al 2006, han sido reconocidas como una fuente importante de caracteres con valor taxonómico, y utilizadas en muchos casos para distinguir géneros y delimitar especies.…”

Section: Introduccionunclassified

Valor sistemático de la epidermis abaxial de la lámina foliar en especies americanas del género Trisetum Pers. (Poaceae: Pooideae: Aveninae)

Finot¹

2006

Gayana Bot.

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Se estudió la epidermis abaxial de la lámina foliar en 29 especies y 3 variedades del género Trisetum s.s. Adicionalmente, se incluyó a Deschampsia brasiliensis (Louis-Marie) Valencia (= Trisetum brasiliense Louis-Marie), Helictotrichon bulbosum (Hitchc.) Parodi (= T. bulbosum Hitchc.) y Peyritschia deyeuxioides (Kunth) Finot (= T. deyeuxioides Kunth). Además, se realizaron observaciones de la epidermis adaxial en algunas especies sudamericanas, utilizando microscopio electrónico de barrido (MEB). Se confeccionó una matriz básica de datos (35 OTUs x 17 caracteres de la epidermis abaxial), a la que se aplicó análisis de agrupamientos (UPGMA) y análisis de componentes principales (ACP). Se reconoció cuatro grupos de especies: 1.

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ORGANOPHYLETIC TRENDS IN SEVERAL MICROMORPHOLOGICAL FLORAL TRAITS IN THE HEXAPLOID CULTIVATED OATS (AVENA)

Cited by 2 publications

References 12 publications

On the leafy nature of lodicules in the genus Triticum (Poaceae)

On the leafy nature of lodicules in the genus Triticum (Poaceae)

Valor sistemático de la epidermis abaxial de la lámina foliar en especies americanas del género Trisetum Pers. (Poaceae: Pooideae: Aveninae)

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