Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 6

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  flower development
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1

Flower development and senescence in Ranunculus asiaticus L.

100%
Shahri W., Tahir I.
Journal of Fruit and Ornamental Plant Research
|
2011
|
tom 19
|
nr 2
Flower development of Ranunculus asiaticus L. growing in the University Bo­tanic Garden was divided into six stages (I - VI): tight bud stage (I), loose bud stage (II), half open stage (III), open flower stage (IV), partially senescent stage (V) and senescent stage (VI). The average life span of an individual flower after it is fully open is about 5 days. Membrane permeability of sepal tissues estimated as electrical conductivity of ion leachates (^S), increased as the development proceeded through various stages. The content of sugars in the petal tissues increased during the flower opening period and then declined during senescence. The soluble proteins registered a consistent decrease with the simultaneous increase in specific protease activity and a-amino acid content during different stages of flower development and senescence. The content of total phenols registered an initial increase as the flowers opened, and then declined during senescence.
2

Physiological and biochemical aspects of flower development and senescence in Nicotiana plumbaginifolia Viv.

100%
Nisar S., Tahir I., Ahmad S. S., Dar R. A.
Folia Horticulturae
|
2017
|
tom 29
|
nr 1
3

Biochemical analysis of calcium-dependent protein kinase [CDPK] during flower development of Pharbitis nil

100%
Jaworski K., Szmidt-Jaworska A., Kopcewicz J.
Biological Letters
|
2005
|
tom 42
|
nr 2 Spec.Vol.
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Influence of environmental factors on reproduction of polar vascular plants

80%
Kellmann-Sopyla W., Pastorczyk M., Gielwanowska I.
Papers on Global Change
|
2011
|
nr 18
In the last few decades, changes of reproductive pattern of polar vascular plants have been observed, for the benefit of generative propagation. The reasons for this phenomenon are attributed to intensively following climate change, whose effects may be various. Warming causes the production of the greater number of generative structures, with higher quality. Our macroscopic observations conducted on specimens of polar vascular plants, cultivated in University of Warmia and Mazury greenhouse, indicate that the effect of temperature increase on flower development and seed formation is inconsistent. On the other hand enhanced levels of UV-B radiation can negatively affect seedlings. The complexity of the climate change causes tremendous difficulties in defining a clear and unquestioned way of modifications during the reproductive phase of the described plants.
5

The isolation of cDNA clones from cucumber [Cucumis sativus L.] floral buds coming from plants differing in sex

80%
Przybecki Z., Kowalczyk M. E., Siedlecka E., Urbanczyk-Wochniak E., Malepszy S.
Cellular and Molecular Biology Letters
|
2003
|
tom 08
|
nr 2
In this study, we found flower cDNA clones which may be connected with the development of flower sex in cucumber. Two pairs of nearly-isogenic lines: gynoecious GY3 (FFMMGG) versus hermaphrodite HGY3 (FFmmGG) and monoecious B10 (ffMMGG) versus gynoecious 2gg (ffMMgg) were used for clone isolation. To obtain differentially-expressed clones, we applied the differential screening method. 454 clones from GY3 and 478 from B10 cDNA libraries were isolated. The results of RFLP analysis with 56 cDNA clones showed no clones which cosegregated with sex in cucumber. The 28 cDNA B10 and 33 cDNA GY3 clones isolated using the differential screening method were sequenced. Some of them seem to may play a role in cell differentiation or flower development. Among the 61 identified clones, 14 show high homology to plant proteins, although of unknown function. 11 show high homology to known proteins, and the possible function of some of them is discussed. For 3 clones, no significant similarity was found. The 31 clones displayed high homology to plant cDNA in EST database. The patterns of expression of five differential cDNA clones, 35GY3, 216GY3, 47GY3, 100B10 and 157B10, were analyzed in cucumber flower buds using in situ RT-PCR. The most interesting clone is 35GY3, because of its possible role in the inhibition of the development of male specific elements in the female cucumber flower.
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Micromorphology of nectaries of Rhododendron catawbiense Michx. at different flower development stages

80%
Weryszko-Chmielewska E., Chwil M., Michonska M.
Acta Agrobotanica
|
2007
|
tom 60
|
nr 2
The analysis of the structure of floral nectaries of Rhododendron catawbiense Michx. was performed using stereoscopic, light and scanning electron microscopy. Nectaries were sampled at different development stages: closed bud, budburst and full bloom. The nectary gland exhibits clear ribbings corresponding to five small ribs of the ovary. In the top part of the gland, unicellular and multicellular non-glandular trichomes occur in great density. The upper surface of the nectary differs from its lateral surface by a stronger degree of cuticle development. Stomata are evenly distributed on the upper surface and in the higher regions of the lateral wall. The cuticle forms clear striae on the surface of stomatal cells. Stomata at different development stages were observed, as well as the beginning of nectar secretion which takes places already in the closed bud.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.