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Extraordinary accuracy in floret position of Helianthus annuus

100%

Okabe T.

Acta Societatis Botanicorum Poloniae

|

2015

|

tom 84

|

nr 1

Divergence angles were measured for inflorescences of Helianthus annuus with several hundreds to more than a thousand disk flowers. Quantitative analysis showed that the angles are robustly fixed in the vicinity of the ideal golden angle 137.508° as accurately as ~0.001°. The mean deviation from the ideal value varies for each sample. The results have important implications for phyllotaxis models, which are discussed by referring to a necessary modification proposed by Roberts.

2

Daily and infradian modulations of circumnutation rhythm in sunflower [Helianthus annuus L.]

100%

Buda A., Krupa M., Stolarz M., Zawadzki T.

Polish Journal of Natural Sciences. Supplement

|

2003

|

tom 01

3

The infradian rhythm of the motor cells of circumnutating Helianthus annuus shoots matches the long-period rhythm of the moon

100%

Buda A., Krupa M., Zawadzki T., Dziubinska H., Krol E., Stolarz M., Trebacz K.

Cellular and Molecular Biology Letters

|

2002

|

tom 07

|

nr Suppl.

4

Ksztaltowanie sie cech uzytkowych odmian slonecznika oleistego [Helianthus annuus L.] w zmiennych warunkach pogody.

89%

Tobola P., Musnicki C.

Rośliny Oleiste - Oilseed Crops

|

1997

|

tom 18

|

nr 2

279-286

5

Components of quantitative resistance to downy mildew [Plasmopara halstedii] in sunflower [Helianthus annuus]

75%

Sakr N.

Journal of Plant Protection Research

|

2009

|

tom 49

|

nr 3

297-301

Components of quantitative resistance in sunflower (Helianthus annuus) to Plasmopara halstedii, the pathogen causing downy mildew, were investigated. Percentage infection, latent period, sporulation density and reduction of hypocotyl length were compared on two sunflower lines showing different levels of quantitative resistance in the field infected with different P. halstedii strains of races 100, 300, 710 and 714 in controlled conditions. The inbred line BT, rather susceptible in the field, showed a higher percentage infection, a higher sporulation density, a shorter latent period and less reduced hypocotyl length than inbred line FU, which showed a greater resistance in the field. The very good resistance of inbred line FU observed in the field was confirmed by the measurements of quantitative resistance criteria described in this study. Percentage infection of FU was 1.4% less than BT, latent period of BT was 12.4% less than FU, sporulation density of FU was 22.3% less than BT and reduced hypocotyl length of BT was 15.3% less than FU. It seems that the criteria such as latent period, sporulation density and reduction of hypocotyl length may be used to measure quantitative resistance in sunflower to P. halstedii.

6

Orientational variability of parallel arrays of cortical microtubules under the outer cell wall of the Helianthus hypocotyl epidermis

75%

Hejnowicz Z., Burian A., Dobrowolska I., Kolano E.

Acta Societatis Botanicorum Poloniae

|

2006

|

tom 75

|

nr 3

201-206

The epidermis of Helianthus hypocotyl can be peeled off and, in the form of detached strips can be used as a model system to study the effect on cortical microtubule (cMTs) orientation of these factors, which are difficult to be manipulated in situ, such as apoplastic pH or applied stress. In the first step, however, the orientation and reorientation of cMTs in the epidermis in situ must be described. The cMTs under the epidermal wall in hypocotyl epidermis at different positions along the hypocotyl and on its opposite sides were studied by means of immunostaining, using epi-fluorescence microscopy. The angle λ that parallel array of cMTs makes with cell longitudinal axis was measured. The variation of λ in a population of cells was documented by λ-histogram (frequency of cells exhibiting a particular λą∆λ plotted against λ value). The histograms were of either transverse type (maximum at λ ~90o, denoted as type A) or oblique type (two maxima on both sides of the transverse direction, denoted as type B) in the apical part of the hypocotyl, and were either of B type or of longitudinal type (maximum at λ ~0o or 180o denoted as type C) in the basal part. The change from A or B to C basipetally may be considered as due to the developmental trend in cMT orientation. The occurrence of B above A in some hypocotyls in their apical part strengthens the hypothesis on the autonomous reorientation of cMTs. The intermingled occurrence of A and B reorientation in the upper part of hypocotyl is interpreted as a manifestation of a subtle control of cell growth in latitudinal direction. The majority of histograms were asymmetric showing predominance of cMT parallel arrays inclined as the middle part of the letter Z.

7

Transformacja genowa roślin metoda balistyczną (mikrowstrzeliwanie) na przykładzie słonecznika Helianthus annuus L.

75%

Tuleja M.

Wszechświat

|

2013

|

tom 114

|

nr 07

8

Somatic embryogenesis and organogenesis induced on the immature zygotic embryos of sunflower [Helianthus annuus L.] - the role of genotype

75%

Jach M., Przywara L.

Acta Biologica Cracoviensia. Series Botanica. Supplement

|

1999

|

tom 41

|

nr 1

9

Light-induced changes in stem circumnutations and electrical potential in Helianthus annuus L.

75%

Stolarz M., Zawadzki T., Krol E., Dziubinska H., Krupa M., Buda A., Trebacz K.

Cellular and Molecular Biology Letters

|

2002

|

tom 07

|

nr Suppl.

10

Plant height at different developmental stages in observed types of sunflower [Helianthus annuus L.] cultivars

75%

Kluza-Wieloch M.

Roczniki Akademii Rolniczej w Poznaniu. Botanika

|

2003

|

tom 06

Changes in shoot length during development of two hybrid cultivars and one population cultivar of oilseed sunflower were compared in 3-year trials. Effects of cultivar, climatic factors, sowing density, and fertilization on plant height were analysed. In the conducted experiments, hybrid cultivars had higher shoots than cultivar ‘Wielkopolski’ since the first studied developmental stage (star stage). However, the large plant height does not have a positive effect on their agronomic value. Results of this study show that sunflowers were the highest in 1999 at all developmental stages, which resulted from more favourable weather conditions and soil type. The lowest final plant height was recorded when sunflowers were grown on brown-earth soil. This study confirms that increased sowing density caused a stronger elongation of shoots since the earliest developmental stages.

11

Early stages of somatic embryogenesis in sunflower

75%

Pietrusiewicz J., Souvre A., XuHan X., Alibert G., Bednara J.

Acta Physiologiae Plantarum

|

1997

|

tom 19

|

nr 2

12

Morphology of pollen grains in three varieties of Helianthus annuus L.

75%

Klimko M., Kluza M., Kreft A.

Roczniki Akademii Rolniczej w Poznaniu. Botanika

|

2000

|

tom 03

The paper reports results of a morphological study of pollen grain of three varieties of Helianthus annuus: Wielkopolski population variety and two interline hybrids Frankasol and Coril. The viability of the pollen grain was also determined. No significant differences were found between the population variety and the two interline hybrids.

13

Wplyw czynnikow siedliskowo-agrotechnicznych na wybrane cechy nielupek z roznych partii koszyczka u oleistych form slonecznika zwyczajnego [Helianthus annuus L.]

71%

Kluza-Wieloch M., Musnicki C.

Rośliny Oleiste - Oilseed Crops

|

2004

|

tom 25

|

nr 2

461-477

14

Dynamika zmian jakosciowych nielupek slonecznika zwyczajnego [Helianthus annuus L.] w trakcie ich dojrzewania

71%

Kluza-Wieloch M., Musnicki C.

Rośliny Oleiste - Oilseed Crops

|

2006

|

tom 27

|

nr 2

231-242

15

Wplyw czynnikow siedliskowych i agrotechnicznych na ksztaltowanie wybranych cech morfologicznych oleistych form slonecznika zwyczajnego [Helianthus annuus L.]

71%

Kluza-Wieloch M., Musnicki C.

Rośliny Oleiste - Oilseed Crops

|

2003

|

tom 24

|

nr 1

95-108

16

Słonecznik zwyczajny a zdrowie

63%

Mystkowska I., Zarzecka K.

Poradnik Gospodarski

|

2013

|

nr 09

17

Slonecznik zwyczajny - cenna roslina spozywcza i lecznicza

63%

Milczarek-Szalkowska H.

Wiadomości Zielarskie

|

1999

|

tom 41

|

nr 07-08

9

18

Przydatność kwasu 5-aminolewulinowego w procesie fitoekstrakcji kadmu

63%

Jarosz Z., Dzida K., Pitura K., Konopinska J., Nowak L.

Annales Universitatis Mariae Curie-Skłodowska. Sectio EEE: Horticultura

|

2013

|

tom 23

|

nr 3

19

The effects of nitric oxide on some antioxidant enzyme activities under salt stress in sunflower plants

63%

Yurekli F., Kirecci O. A., Celik I.

Acta Scientiarum Polonorum. Hortorum Cultus

|

2019

|

tom 18

|

nr 5

The effects of externally applied sodium nitroprusside on superoxide dismutase (SOD), glutathione peroxidase (GPx), ascorbate peroxidase (APX), and catalase (CAT) antioxidant enzyme activities, nitric oxide (NO) levels have been investigated in salt stress resistant and sensitive sunflower plants. NaCl treatments and SNP treatments simultaneously with salt application (NaCl+SNP) were performed. SOD, GPx, APX and CAT antioxidant enzyme activities and NO levels showed differences in leaf tissues treated with 100 µM SNP, different concentrations of NaCl, and NaCl+SNP. SOD, GPx and APX enzyme activities were generally increased in sensitive variety, but decreased in tolerant variety. However, while general increase in CAT enzyme activity was determined in tolerant type, a reduction was established in sensitive type. An increase was determined in both types in NO levels. It is evident from these results that administration of NO donor SNP can cope with reactive oxygen species in both varieties. This study indicates that negative effects of salt stress on different sun flower varieties can be recovered by nitric oxide.

20

Determination of the tolerance of sunflower to lead-induced stress

63%

Winska-Krysiak M., Koropacka K., Gawronski S.

Journal of Elementology

|

2015

|

tom 20

|

nr 2

Six-week old sunflower seedlings, cv. Ogrodowy, were treated with 0, 15, 45 and 60 mg Pb dm-3, and then the content of lead and selected physiological and biochemical parameters were measured. Photosynthesis efficiency, water relations (intensity of transpiration, relative water content (RWC)) and gene-encoding metallothionein were measured three times after 24, 48 and 72 hours of exposure to Pb. The content of glutathione and lead was analysed after 72 hours’ exposure to Pb. Most of the lead uptake was accumulated in the roots, then in the stems and leaves, but when re-calculated per plant dry weight, the uptake of the metal did not depend on the lead dose applied. The highest 60 mg Pb dm-3 treatment was accompanied by a significant decrease in dry weight content. Moreover, most of the lead taken up in these plants was transported to the stems and leaves (23.6% of total lead uptake). The lead doses used in this study did not affect the intensity of photosynthesis, but a decrease in transpiration and relative water content was observed. The glutathione level in the plants varied depending on the organ examined and the Pb concentration in the treatment. The expression of the metallothionein gene HaMT1 was observed in the stems only. These results indicate that the sunflower cultivar Ogrodowy is a promising plant for phytoremediation of lead-polluted soils.

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