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1

The biology of flowering of winter aconite (Eranthis hyemalis (L.) Salisb.)

100%

Rysiak K. , Zuraw b.

Acta Agrobotanica

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2011

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tom 64

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nr 2

EN

Eranthis hyemalis belongs to the Ranunculaceae family whose representatives enrich early spring pollen flow and nectar for pollinating insects. Flowering biology and morphological characteristics flowers of winter aconite were studied. The forage value was estimated as the rate of nectar production. Observations were carried out between 2008 and 2011 in the Botanical Garden of the Maria Curie-Skłodowska University located in the Lublin area. In the conditions of Lublin, flowering of winter aconite plants started at the beginning of February and lasted until the end of March. The seasonal bloom dynamics was strongly affected by maximum temperatures, which intensified flower blooming, and snowfalls which hampered this process. During the day, flowers opened between 8.00 am and 3.00 pm, but the highest intensity was between 10.00 am and 12.00 am. The process of pollen release, with the average number of 29 stamens shedding pollen in the flowers, lasted from 2 to 3 days. During the day the largest number of anthers opened at noon hours, between 11.00 am and 1.00 pm, though a certain rise in this number was also observed in the morning hours between 8.00 and 9.00 am. Eranthis hyemalis flowers develop funnel-shaped nectaries, on average 3-6 per flower. The determined amount of nectar per flower was 1.23 mg, while the concentration of sugars in it averaged 72.11%. The weight of nectar sugar per flower was 0.88 mg.

PL

Eranthis hyemalis należy do rodziny Ranunculaceae, której przedstawiciele wzbogacają wczesnowiosenny pożytek pyłkowy i nektarowy dla owadów zapylających. Celem pracy było poznanie biologii kwitnienia i cech morfologicznych kwiatów rannika zimowego oraz wartości pożytkowej wyrażonej obfitością nektarowania. Obserwacje prowadzono w latach 2008-2011 na terenie Ogrodu Botanicznego UMCS w Lublinie. W warunkach Lublina kwitnienie roślin trwało od początku lutego do końca marca. Na sezonową dynamikę rozkwitania decydujący wpływ miały temperatury maksymalne, które intensyfikowały rozkwitanie kwiatów, ale również opady śniegu, które całkowicie hamowały ten proces. W ciągu dnia kwiaty rozkwitały od godziny 8.00 do 15.00 z największym nasileniem w godzinach 10.00-12.00. Proces pylenia pręcików w liczbie średnio 29 w kwiecie trwał od 2 do 3 dni. W ciągu dnia najwięcej pylników otwierało się w godzinach południowych 11.00-13.00, choć zauważono również pewną zwyżkę w godzinach porannych 8.00- 9.00. Kwiaty rannika wykształcają lejkowatego kształtu listki miodnikowe w liczbie od 3 do 6. Oznaczona ilość nektaru z 1 kwiatu wynosiła 1,23 mg, a koncentracja cukrów w nim zawartych średnio 72,11%. Masa cukrów oznaczonych z 1 kwiatu wynosiła 0,88 mg.

2

Rannik zimowy - wczesnowiosenne źródło pożytku dla owadów

100%

Rysiak K. , Zuraw B.

Pszczelarstwo

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2013

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tom 64

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nr 03

3

Walory dekoracyjne i zdrowotność Tithonia rotundifolia (Mill.) S.F. Blake w nasadzeniach miejskich

80%

Kopacki M. , Rysiak K. , Szmagara M.

Annales Horticulturae

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2017

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tom 27

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nr 4

4

Charakterystyka roślin z rodzaju Paeonia L. w Ogrodzie Botanicznym UMCS w Lublinie. Część I. Fazy fenologiczne

70%

Pogroszewska E. , Hetman J. , Poniewozik M. , Denisow B. , Rysiak K.

Annales Horticulturae

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2017

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tom 27

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nr 1

5

The effect of fungal activity on photosynthetic parameters of different canna cultivars under field conditions

61%

Kopacki M. , Szmagara M. , Jamiolkowska A. , Skwarylo-Bednarz B. , Rysiak K. , Marcinek B.

Acta Scientiarum Polonorum. Hortorum Cultus

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2019

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tom 18

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nr 3

EN

Three-year studies (2014–2016) were conducted in Lublin in the south-east Poland. The objects of research were the plants of ten canna cultivars: ‘Aida’, ‘America’, ‘Botanica’, ‘Cherry Red’, ‘La Boheme’, ‘Lucifer’, ‘Picasso’, ‘Robert Kemp’, ‘President’ and ‘Wyoming’. Observations were carried out each year in October. Plants with symptoms of stem and root rot, leaves yellowing and wilt were noticed on the investigated plantations. The plants were studied with regard to photosynthetic activity and also by disease index for all cultivars and statistical analysis was carried out upon them. The effect of disease index on photosynthetic intensity and transpiration was determined after the calculation of Pearson’s correlation coefficient. Infected plants were collected for mycological analysis. The results of mycological analysis showed that canna plants were colonized by Fusarium spp., Sclerotinia spp. and Alternaria spp. Alternaria alternata, Fusarium oxysporum, Fusarium avenaceum and Sclerotinia sclerotiorum predominated among pathogenic species. The best health status and the lowest number of colonies were noticed for plants of cv. ‘Botanica’. The infection of canna leaves by pathogenic fungi has negatively affected the intensity of photosynthesis, transpiration, stomatal conductance and sub-stomatal CO2 concentration and it was largely related to the degree of infestation of specified varieties of canna. The photosynthesis process was limited especially in ‘La Boheme’, ‘Picasso’, ‘Cherry Red’ and ‘President’ cultivars, which were infected most frequently by pathogenic fungi. It was confirmed by negative Pearson’s coefficient.