Wyniki wyszukiwania - AGRO

1

Wplyw regulatorow wzrostu na cechy morfologiczne, zawartosc chlorofilu i plon nasion lucerny [Medicago sativa L.] w doswiadczeniach wazonowych

100%

Slalska M.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

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1992

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nr 184

59-66

2

Wplyw Alaru-85 i chlorku chlorocholiny na cechy morfologiczne, wytrzymalosc mechaniczna lodyg i plon nasion lucerny [Medicago sativa L.]

100%

Skalska M.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

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1992

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nr 184

67-72

3

Simplification of a haemolytic micromethod for toxic saponin quantification in alfalfa

99%

Gorski P. M., Jurzysta M.

Acta Agrobotanica

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1988

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tom 41

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nr 2

A simplification of a haemolytic micromethod is presented. In the orginal method, alfalfa (Medicago media Pers.) leaf sap is spotted on the plate covered with a blood-gelatine suspension. In the presented method, the mashed alfalfa pulp is used instead of sap. Due to saponin diffusion and the reaction with erythrocytes, a haemolytic ring appears, which has a width proportional to the concentration of toxic saponins. It is shown that the width of haemolytic ring does not depend on the sample weight ranging from 20 to 100 mg. This allows for the omission of laborious sap pressing and sample quantification. Individual alfalfa plants with different saponin contents were tested using leaf sap and leaf pulp for analyses. Good agreement was found with sap and leaf pulp methods. The correlation obtained by both methods was high, r = 0.87. The modified method requires only a small amount of plant material and makes the analyses of large numbers of individual plants per day possible. The method is especially recommended for breeding purposes.

4

Pre- and post-pollination mechanisms affecting seed formation in alfalfa (Medicago sativa L.)

85%

Mol R., Wlodarczyk A., Weigt D., Broda Z.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2014

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tom 56

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nr 1

5

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Nephelometric analysis of the protein coagulation in green juice of lucerne

85%

Lejckova K., Vavreinova S.

Zeszyty Problemowe Postępów Nauk Rolniczych

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1988

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tom 351

В работе описаны исследования коагуляции в зеленом соку из люцерны при помощи нефелометра. Исследовались процессы коагуляции при pH натуральном и при pH, доведенном до 9,4, в диапазоне температур 20-85°С. Исследовательский материал получено во время сжима проб люцерны под соответствующей нагрузкой. Для выяснения проблематики коагуляции использовано методы статической физики. Полученные результаты указывают на изменчивость исследуемых признаков в зависимости от разных факторов.

6

Correlations and heritability of the characters determining the seed yield of the long-raceme alfalfa [Medicago sativa L.]

85%

Bodzon Z.

Journal of Applied Genetics

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2004

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tom 45

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nr 1

7

The effect of alfalfa [Medicago sativa] saponins on Botrytis tulipae and Phoma narcissi growth

85%

Saniewska A., Bialy Z., Jurzysta M.

Phytopathologia Polonica

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2003

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tom 27

8

Effect of alfalfa [Medicago sativa L.] saponins on development and fertility of grain weevil [Sitophilus granarius L.]

85%

Wawrzyniak M., Blazejewska A., Jurzysta M.

Acta Scientiarum Polonorum. Agricultura

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2003

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tom 02

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nr 2

9

Badanie samoniezgodnosci oraz podobienstwa genetycznego zroznicowanych genotypowo form lucerny [Medicago sativa L.]

80%

Broda Z., Dobrzycka A.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

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2007

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nr 245

205-214

10

Podobienstwo genetyczne roznych populacji lucerny siewnej [Medicago sativa L. sl.] a ich potencjal plonowania

80%

Broda Z., Dobrzycka A., Bocianowski J.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

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2009

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nr 252

301-313

11

The effect of Medicago arabica, M. hybrida and M. sativa saponins on the growth and development of Fusarium oxysporum Schlecht f. sp. tulipae apt.

71%

Jarecka A., Saniewska A., Bialy Z., Jurzysta M.

Acta Agrobotanica

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2008

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tom 61

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nr 2

In the present work it was shown that total saponins originated from M. hybrida and M. sativa substantially limited mycelium growth of F. oxysporum f. sp. tulipae and symptoms of fusariosis on tulip bulbs. Out of 15 individual tested saponins originated from M. arabica, M. hybrida and M. sativa, four compounds: 3-O-[β-D-glucopyranosyl (1→2)α-L-arabinopyranosyl] hederagenin, hederagenin 3-O-β-D-glucopyranoside, medicagenic acid, medicagenic acid 3-O-β-D-glucopyranoside had the strongest inhibitory effect on mycelium growth of Fusarium oxysporum f. sp. tulipae on PDA medium. The total saponins from M. arabica, M. hybrida and M. sativa inhibited the number of colony forming units of Fusarium oxysporum f. sp. tulipae in artifi cially infested substrate. The use of saponins originated from Medicago as a fungicide is suggested.

12

Cytoembryological analysis of causes for poor seed set in alfalfa (Medicago sativa L.)

71%

Mol R., Weigt D., Broda Z.

Acta Biologica Cracoviensia. Series Botanica

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2011

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tom 53

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nr 1

Poor seed set is a limiting factor in alfalfa breeding, as it slows the selection response. One strategy used to overcome this problem is to search for mutations of inflorescence morphology. Long-peduncle (lp), branched-raceme (br) and top-flowering (tf) inflorescence mutations increase the number of flowers per inflorescence, but they do not improve seed set per flower. Here we assessed pollen tube growth in styles of those inflorescence mutants and we observed embryo and endosperm development in seeds 1 to 16 days after pollination (DAP). The number of pollen tubes penetrating the style and the ovary was similar in all tested mutants and in the reference cultivar Radius. At 2 DAP, fertilized ovules were 2.7–3.9 times less numerous in certain inflorescence mutants than in the short-raceme cv. Radius. Ovule degeneration progressed at 2–4 DAP in all analyzed plants. Most ovules were not properly developed in the control cultivar (62%), nor in the forms with mutated inflorescence morphology (69–86%). The number of seeds per pod was lowest in the tf form despite its having the highest number of ovules per ovary. It appears that the number of ovules per pistil is not a crucial factor in seed set in alfalfa when fertilization efficiency is very low. Both poor fertilization and gradual ovule degeneration were factors causing poor seed set in the investigated alfalfa genotypes.

13

Królowa roślin pastewnych

71%

Golawska S.

Ekonatura

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2011

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nr 09

14

Ethylene mediates in the early oxidative stress induced by mercury

71%

Montero-Palmero M., Martin-Barranco A., Alonso J., Escobar C., Hernandez L.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 2

15

Wplyw kwasu salicylowego, inhibitora biosyntezy jasmonidow, na wzrost zawiesiny embriogennej, rozwoj somatycznych zarodkow oraz ich regeneracja w kulturach Medicago sativa L.

71%

Kepczynska E., Zielinska S.

Biotechnologia

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2004

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nr 2

114-122

16

Chcesz być zdrowy, młody nie stroń nigdy od lucerny i lukrecji

71%

Pado K.

Ekonatura

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2013

|

nr 11

17

Method and time of alfalfa sowing when climate is changing

71%

Andrzejewska J., Albrecht K. A., Ignaczak S., Skinder Z.

Acta Scientiarum Polonorum. Agricultura

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2015

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tom 14

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nr 3

The inspiration to reassess method and timing for establishing alfalfa (Medicago sativa L.) is meteorological data documenting that current Polish winters are milder than several decades ago, when management recommendations were worked out for this crop. Additionally, prolonged periods of spring drought occur more frequently, posing significant challenges to the development of alfalfa seedlings under a companion crop. The hypothesis was made that as climatic conditions change, the traditional practice of spring sowing with a barley (Hordeum vulgare L.) companion crop may become higher risk, and direct sowing later in the season when rainfall is more dependable would provide advantages. From 2010 to 2014 three series of experiments were carried out over the establishment year and first production year. Establishment success and yield performance of alfalfa sown with a barley companion crop in April was compared to alfalfa direct sown in May, June, July and August. Plant density, overwinter survival, and diameter of the upper taproot from sowings performed in the period April to late July were similar. Plant density with August sowing was significantly higher, but taproot diameter was smaller than in plants sown earlier in spring or summer. Plants from all sowing treatments overwintered well, with the greatest stand loss of only 15% occurring with August sowing. In the first production year, mean dry matter yields were similar for alfalfa sown in the period from April to late July, averaging 11.7 Mg. ha⁻¹. First production year yield associated with August sowing was significantly lower, at 8.88 Mg. ha⁻¹. In the years and locations of this study, the alternative of direct sowing alfalfa up to late July resulted in similar establishment success to the traditional practice of sowing with a barley companion crop in early spring.

18

Effect of the culturing density of the Sinorhizobium meliloti Bp on the development of lucerne (Medicago sativa L.) and nitrogenase activity

71%

Mocek-Plociniak A., Niewiadomska A., Gluchowska K.

Acta Scientiarum Polonorum. Agricultura

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2008

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tom 07

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nr 1

The authors investigated the impact of the Sinorhizobium inoculum density on the plant development of alfalfa, nodulation and nitrogenase activity. It was found that plants inoculated with a 10% inoculant (4.9 x 10⁶ CFU) were characterized by the best growth, more profuse fresh material and a very well developed root system and, additionally, they revealed higher nitrogenase activity.

19

Alfalfa (Medicago sativa L.) apigenin glycosides and their effect on the pea aphid (Acyrthosiphon pisum)

71%

Golawska S., Lukasik I., Golawski A., Kapusta I., Janda B.

Polish Journal of Environmental Studies

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2010

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tom 19

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nr 5

Flavonoids are a group of secondary metabolites found in most families. They are known to have important physiological functions in plants by protecting them against biotic stresses. Liquid chromatography (HPLC) was used to determine the flavonoid profiles, especially apigenin glycosides, their total concentration, as well as changes in the amount of six flavones found in the aerial parts of alfalfa (Medicago sativa L.) (Fabaceae) Radius cv. for three vegetative stages, uninfested and infested by the pea aphid (Acyrthosiphon pisum Harris) (Homoptera: Aphididae). It has been shown that both control and infested green aerial parts of alfalfa plants had similar flavonoid profiles. The dominant flavonoid of alfalfa was compound 7-O-[2-O-feruloyl- β-D-glucuronopyranosyl(1→2)-O-β-D-glucuronopyranosyl]-4’-O-β-D-glucuronopyranosideapigenin. Compound 4’-O-β-D-glucuronopyranosideapigenin was present in the smallest amounts. The total concentration of flavones was rather high and ranged from 10.32 to 12.28 mg/g d.m., but there were no significant differences between uninfested and infested alfalfa plants. There was a negative correlation between the concentration of total apigenin glycosides in the alfalfa plants and pea aphid abundance and phloem sap ingestion. This finding may indicate the importance of apigenin glycoside forms as nutritional compounds.

20

Podatnosc roznych odmian lucerny wielolistnej [Medicago sativa L.] na uszkodzenia przez szkodniki

71%

Jaworska M., Ropek D., Zajac T.

Zeszyty Naukowe Akademii Rolniczej w Krakowie. Sesja Naukowa

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1999

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tom 62

147-152

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