Results 131 to 140 of about 738 (169)

VENTILATION BY FLOATING LEAVES IN NUPHAR

American Journal of Botany, 1982
The network of internal gas spaces in the yellow waterlily constitutes a pressurized flow‐through system which forces oxygen to the rhizome buried in anaerobic sediment. This ventilation has been documented previously in a subspecies of Nuphar luteum with aerial leaves, and appeared to occur ...
J. W. H. Dacey, M. J. Klug
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Stereoselective synthesis of Nuphar quinolizidine alkaloid, (−)-deoxynupharidine

Tetrahedron Letters, 2005
A stereoselective synthetic route to Nuphar quinolizidine alkaloid, (−)-deoxynupharidine, was established by employing reductive carbon–nitrogen bond cleavage, followed by simultaneous recyclization of a proline derivative with samarium diiodide, and an intramolecular ring-closing metathesis, as the key steps.
Miho Katoh, Hirotake Mizutani, Toshio Honda   +2 more
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Nuphacristine—an alkaloid from Nuphar luteum

Phytochemistry, 1988
Abstract From the rhizomes of Nuphar luteum a new C 15 alkaloid, nuphacristine, has been isolated. The structure and stereochemistry of nuphacristine have been established on the basis of spectral analysis and chemical transformations.
Jacek Cybulski, Krystyna Ba̧bel, Krystyna Wojtasiewicz, Jerzy T. Wróbel, David B. MacLean   +4 more
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Structural Studies on Nuphar Alkaloids

1974
The mass spectra of several quinolizidine alkaloids of known structure, isolated from species of Nuphar luteum, have been studied. High resolution mass measurements have been used to characterise fragmentation patterns capable of differentiating between substituents in rings A and B of the quinolizidine system.
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Polymorphisme du Nuphar luteum

Bulletin mensuel - Société botanique de Lyon, 1893
Magnin Antoine. Polymorphisme du Nuphar luteum. In: Bulletin mensuel - Société botanique de Lyon, tome 11, bulletin 1, 1893. p. 17.
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Nuphar

2023
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?????????????????????????????? ???? ???????????????????? ?????????????????????? Nymphaea alba, Nuphar lutea ???? Nuphar pumila ?? ???????????????????? ?? ???????????????????? ???????????? ?????????????????????? ???????? ????. ????????. ??. ??. ????????????

2019
?? ???????????? ???????????????????? ?? ???????????????????? ?????????? ?????????????????????? ???????? ????. ????????. ??. ??. ???????????? ?????????????????????? ?????????????????????????????? ?????????????????????? ???????????? Nymphaea alba L., Nuphar lutea (L.) Sm. ???? N. pumila (Timm) DC. ?????????????????? ?????????????????????? ?? ????????????
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Caloric and Micronutrient Content of Nuphar polysepalum

The Southwestern Naturalist, 1976
Caloric equivalents are cited for eight vegetative and reproductive tissue types of Nuphar polysepalum; leaf blade tissue was highest (4499 cal/g ash-free dry weight) and rhizome tissue lowest (3976 cal/g ash-free dry weight). In addition, the concentration of Fe, Mn, Cu, and Zn was determined for each tissue type; leaf blade tissue was consistently ...
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?????????????????????????????? ???????????????????????????????? ?????????????? ???? ?????????? ?????????????????? ?? ?????????????????? ?? ?????????????????? ?????????????? Nuphar lutea ???? Nymphaea alba

2021
The leaf mesophyll cells ultrastructure and pigment content of heterophyllous aquatic plants Nuphar lutea (L.) Smith. and Nymphaea alba L. are reported. The ultrastructural differences of submerged and floating leaves were determined. Submerged leaf chloroplasts are located along the periclinal cell walls.
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Nuphar, n.

2023
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