Results 1 to 10 of about 1,142 (197)

Distinct C4 sub‐types and C3 bundle sheath isolation in the Paniceae grasses [PDF]

open access: yesPlant Direct, 2021
In C4 plants, the enzymatic machinery underpinning photosynthesis can vary, with, for example, three distinct C4 acid decarboxylases being used to release CO2 in the vicinity of RuBisCO.
Jacob D. Washburn   +8 more
doaj   +5 more sources

NOMENCLATURAL AND CRITICAL NOTES ON SOME BRAZILIAN SPECIES OF Paspalum (POACEAE: PANICEAE) [PDF]

open access: yesActa Amazonica, 1993
A critical analysis of the type collections of 39 species names of Paspalum L. (Poaceae: Paniceae) from Brazil described by Swallen is presented along with comments based on more recent gatherings of the species. Eighteen new synonyms are proposed.
Tarciso S. FILGUEIRAS
doaj   +2 more sources

Systematics and Phylogenetic Placement of Panicum L. Species within the Melinidinae Based on Morphological, Anatomical, and Molecular Data (Poaceae, Panicoideae, Paniceae) [PDF]

open access: yesPlants, 2023
Generic boundaries of the African species Panicum deustum Thunb., Panicum trichocladum Hack. ex K. Schum., and Panicum vollesenii Renvoize are analyzed and compared with related genera of the tribe Paniceae and the subtribe Melinidinae.
Carolina Delfini   +3 more
doaj   +2 more sources

Revisão de Mesosetum Steudel ( Gramineae: Paniceae) [PDF]

open access: yesActa Amazonica, 1989
RESUMOApresenta-se uma revisão taxonômica do gênero Mesosetum Steudel (Gramineae: Paniceae). O gênero distingue-se dos demais de sua tribo pela inflorescência em espiga terminal, solitária, espiguetas com primeira gluma voltada para a raque e cariopse ...
Tarciso S. Filgueiras
doaj   +2 more sources

Macro-Climatic Distribution Limits Show Both Niche Expansion and Niche Specialization among C4 Panicoids. [PDF]

open access: yesPLoS ONE, 2016
Grasses are ancestrally tropical understory species whose current dominance in warm open habitats is linked to the evolution of C4 photosynthesis. C4 grasses maintain high rates of photosynthesis in warm and water stressed environments, and the syndrome ...
Lone Aagesen   +5 more
doaj   +1 more source

گزارش جدیدی از جنس Urochloa و زیرگونه Eragrostis cilianensis subsp. starosselskyi برای ایران [PDF]

open access: yesرستنی‌ها, 2012
در بررسی نمونه‌های تیره گندمیان در هرباریوم ''IRAN'' ، Urochloa panicoides P. Beauv. متعلق به قبیله Paniceae به عنوان علف هرز از مزارع ذرت استان فارس وEragrostis cilianensis (All.) Vign.-Lut. ex Janchen subsp.
محمد امینی‌راد   +1 more
doaj   +1 more source

Novedades nomenclaturales en Cenchrus s.l. (Poaceae: Panicoideae: Paniceae)

open access: yesBoletín de la Sociedad Argentina de Botánica, 2012
Recientes estudios filogenéticos con datos morfológicos y moleculares aportaron evidencia sobre la monofilia de los géneros Cenchrus, Pennisetum y Odontelytrum y, por ello, se propuso su unificación y transferencia a Cenchrus, el cual tiene prioridad ...
Hugo F Gutiérrez, Osvaldo Morrone
doaj   +3 more sources

Nova ocorrência de Poaceae para a América do Sul: alloteropsis (Panicoideae/Poaceae) New occurrences of Poaceae for the South America: alloteropsis (Panicoideae/Poaceae)

open access: yesActa Amazonica, 2012
Registra-se, pela primeira vez, a ocorrência de Alloteropsis J. Presl (Panicoideae/Paniceae s.l.) no Brasil (Alloteropsis cimina(L.) Stapf), no Estado do Amapá. Este é também o primeiro registro do gênero e da espécie na América do Sul.
Antônio Elielson Sousa da Rocha   +1 more
doaj   +1 more source

Checklist das Poaceae de áreas inundáveis e inundadas do nordeste do estado do Pará Checklist of Poaceae in periodically and permanently flooded areas in northeastern region of Pará state

open access: yesActa Amazonica, 2009
É apresentada uma relação de Poaceae coletadas em áreas inundáveis e inundadas do nordeste do Estado do Pará. São registrados 31 gêneros, compreendendo 83 espécies.
Antônio Elielson Sousa da Rocha   +1 more
doaj   +1 more source

Utricle morphology of the species in Carex sect. Paniceae (Cyperaceae) and its systematic significance(薹草属少花薹草组(莎草科)的果囊形态及其系统学意义)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2022
用扫描电镜观察了少花薹草组Carex sect. Paniceae(莎草科)26种3变种的果囊形态和微形态特征。结果表明:(1)果囊形状(喙除外)为倒卵球形、椭球形或卵球形,均为钝三棱状,果囊长度为1.99~7.27 mm,喙多弯曲(仅1种C. striatula果囊的喙直立),喙急缩或渐缩,喙长与果囊长度的比值为1/8~1/2,表皮细胞多明显隆起,极少数隆起不明显,且多数性状种内保持稳定;(2)喙口形态分斜截、平截、微二齿和二齿4类,且在种内有变异,如C.
LUYifei(鲁益飞)   +6 more
doaj   +1 more source

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