Wyniki wyszukiwania

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Fruitlet development in the genus Potamogeton [Potamogetonaceae]

100%

Toma C.

Acta Biologica Cracoviensia. Series Botanica

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2002

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tom 44

The development of the pericarp and its taxonomic value were studied in Potamogeton lucens, P. pusillus, P. crispus, P. pectinatus. The fruitlet of Potamogeton is drupaceous. Anatomical study and image analysis of developmental stages in the pericarps confirmed differences between species. The different degrees of pericarp sclerification, different positions of lignified cells in the pericarp, and numbers and types of pericarp layers have great diagnostic value. The vascular system of the Potamogeton flower and fruitlet, and the centrifugal direction of pericarp sclerification, do not have taxonomic significance within the genus Potamogeton. There are no significant differences in cell and layer size in Potamogeton fruitlets between the four species studied.

2

Potamogeton filiformis i P. pectinatus (Potamogetonaceae) w Polsce

84%

Zalewska-Galosz J.

Fragmenta Floristica et Geobotanica Polonica

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2001

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tom 08

79-91

Potamogeton filiformis and P. pectinatus (Potamogetonaceae) in Poland. Fragmenta Floristica et Geobotanica Polonica 8: 79–91. Kraków. PL ISSN 1640 629X. ABSTRACT: The genus Potamogeton subgen. Coleogeton is represented by two species in Poland: Potamogeton filiformis Pers. and P. pectinatus L. The aim of this paper is expressing differences between these species in taxonomy, variation and distribution. A detailed list of localities based on data from herbarium materials of these species is also presented.

3

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New station of Potamogeton x salicifolius Wolfg. in north-eastern Poland

84%

Pliszko A.

Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana

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2013

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tom 17

Potamogeton ×salicifolius Wolfg., the hybrid between P. lucens L. and P. perfoliatus L., is recorded from north-eastern Poland for the fi rst time. The new station is located in the Wigry Lake (the Wigry National Park), within FB19 square unit of the ATPOL cartogram grid. The distribution is updated with one new population of vegetative ramets.

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Budowa dojrzalych owockow niektorych przedstawicieli rodzaju Potamogeton [Potamogetonaceae]

67%

Karcz J., Toma C.

Fragmenta Floristica et Geobotanica. Series:Polonica

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1996

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tom 03

369-388

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Molecular evidence for the hybrid origin of Potamogeton x subrufus Hagstr. (Potamogetonaceae)

67%

Zalewska-Galosz J., Kwolek D.

Acta Societatis Botanicorum Poloniae

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2014

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tom 83

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nr 3

Potamogeton ×subrufus Hagstr. was described as a hybrid between P. lucens L. and P. nodosus Poir.; however, the taxon had not been widely accepted and regarded as conspecific with P. ×fluitans Roth, the hybrid between P. lucens and P. natans L. The origin of P. ×subrufus had been obscured till 2010, when, based on morpho-anatomical treatment, it was shown that P. ×subrufus displays several characters consistently different from those of P. ×fluitans. Here we report a successful amplification and sequencing of nuclear ribosomal ITS1 region from a 115 year-old herbarium specimen of P. ×subrufus, collected in locus classicus by J. Baagöe and preserved in the Herbarium of the Institute of Botany, Jagiellonian University (KRA). Based on the additive polymorphism pattern expressed in the ITS1 sequences of P. ×subrufus, we demonstrate that one of the parents of this hybrid was P. nodosus, as was claimed by Hagström.

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Stanowisko Potamogeton praelongus i P. gramineus [Potamogetonaceae] na Wyzynie Malopolskiej

67%

Nobis M., Piwowarczyk R.

Fragmenta Floristica et Geobotanica Polonica

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2003

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tom 10

286-289

Ograniczanie wyników

2 Fragmenta Floristica et Geobotanica Polonica

1 Acta Biologica Cracoviensia. Series Botanica

1 Acta Societatis Botanicorum Poloniae

1 Fragmenta Floristica et Geobotanica. Series:Polonica

1 Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana

2 Toma C.

2 Zalewska-Galosz J.

1 Karcz J.

1 Kwolek D.

1 Nobis M.

1 Piwowarczyk R.

1 Pliszko A.

1 2014

1 2013

1 2003

1 2002