Taxonomic features of fruits and seeds of Nymphaea and Nuphar taxa of the Southern Baltic region

Abstract

Abstract:Research was carried out on fruits and seeds of Nymphaea and Nuphar taxa collected from Poland, Latvia and Estonia. The aim of the research was to establish diagnostic features which could enable identification of the examined taxa on the basis of the fruit and seed structure and creating a key to identify them. The examined organs were observed through an optic microscope and scanning electron microscope (SEM). New diagnostic features were discovered: spotting of fresh pericarp, the range of the fruit shape coefficient, the colour of the rays in the fruit stigma disc, the thickness of the seed testa, ribs in the seeds, and occurrence of the "puzzle shaped" cells on the surface of the testa. The discovered features were used in the taxonomic characteristics.

In Vitro culture of Nymphaea nouchali seeds; a conservation approach for a vulnerable species

“…Although 50 % acid did not degrade the trichomes, it may be adequately strong to kill the microbes completely, whereas the other two concentrations (10 % and 25 %) were not as effective as such. In vitro seed propagation was reported only in some Nymphaea species; N. alba (Sumlu et al, 2010;Latowski et al, 2014) and N. lotus var. thermalis (Blidar et al, 2019), which have no trichomes on the seed coats.…”

Genetic Diversity and Population Structure Assessed Using Microsatellite (SSR) Markers from Relict Populations of Nuphar pumila (Nymphaeaceae)

“…Both species are distributed through the lakes of Eurasia, being widespread in northern latitudes [6,[11][12][13]. However, while N. lutea occupies vast territories in southern latitudes extending from the British Islands and the Mediterranean basin in the West-including the Balkans and most the Italic and Iberian Peninsulas-to China and Japan in the East [3,4,[14][15][16][17], the southern distribution of N. pumila comprises a series of relict populations confined to the British Islands and European mountainous areas of the Alps, the French Massif Central and the Cantabrian Mountains (North Spain) in the West, and the northern lakes of Mongolia, east China and Japan in the East [3,4,6,9,14,15,[18][19][20][21][22].…”