Wyniki wyszukiwania - Biblioteka Nauki

1

Analysis of Seed Yielding, Thousand Kernel Weight and Germination Capacity in Selected Forms of Poa pratensis L.

100%

Radkowski A. , Radkowska I. , Fiszer-Skrzyńska M.

Ecological Chemistry and Engineering. A

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2013

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tom Vol. 20, nr 3

315--322

EN

In years 2010–2011 in the areas of the Plant Breeding Station of Polanowice near Krakow (220 m a.s.l.) a field study was conducted in order to assess diversity in seed production potential, thousand kernel weight and germination capacity among different forms of common meadow grass. The study covered 31 different forms of common meadow-grass including 28 families of the Eska 46 cultivar, 2 ecotypes and 1 strain. The experiment was established by planting the grasses (solitaries) in rows 40 m of length and every 40 cm in the row. The rows of experimental objects were 2.20 m apart. It is known from literature that this species cultivated as seed crop gives low seed production and the yields would differ substantially among cultivars. The study demonstrated considerable differentiation in seed yield among all the forms, which was confirmed by high coefficient of variation scores, between 32.5 % (group III) and 55.3 % (group II). Seed production extended from 13 kg ha–1 for the family E24 to 100 kg ha–1 for the ecotype EK. POLWAMOD 193 143 714. The variation of germination capacity was between 12.8 % for group III and 15.9 % for group II. The only low variation in thousand kernel weight was noted within the analysed forms of Poa pratensis.

PL

W latach 2010–2011 na terenie Stacji Hodowli Roślin w Polanowicach koło Krakowa (220 m n.p.m.) przeprowadzono doświadczenie polowe, którego celem była ocena zróżnicowania różnych form wiechliny łąkowej pod względem potencjału nasiennego, masy tysiąca nasion i zdolności kiełkowania. Badaniami objęto 31 form wiechliny łąkowej, w tym 28 rodzin odmiany Eska 46, 2 ekotypy oraz jeden ród. Doświadczenie założono przez sadzenie roślin (pojedynczych) w rzędach o długości 40 m, w odstępach 40 cm w rzędzie. Odległość między rzędami badanych obiektów wynosiła 2,20 m. Literatura fachowa wskazuje, że gatunek ten w uprawie nasiennej daje niskie plony oraz plony te są bardzo zróżnicowane między odmianami. W badaniach wykazano w przypadku plonu nasion duże zróżnicowanie, co znalazło potwierdzenie w wysokich wartościach współczynnika zmienności w zakresie od 32,5 % (III grupa) do 55,3 (II grupa). Plon nasion wahał się od 13 kg ha–1 u rodziny E24 do 100 kg ha–1 w przypadku ekotypu EK. POLWAMOD 193 143 714. Zmienność zdolności kiełkowania wahała się od 12,8 % w przypadku trzeciej grupy do 15,5 % w drugiej grupie. Jedynie małą zmienność odnotowano w przypadku masy tysiąca nasion u analizowanych form Poa pratensis.

2

Effect of Nitrogen Fertilization on the Quantity of Seed Yield of Selected Poa pratensis L. Cultivars

84%

Grygierzec B.

Ecological Chemistry and Engineering. A

|

2011

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tom Vol. 18, nr 8

1019-1024

EN

The paper presents a compilation of results obtained from field and laboratory experiments conducted in 2005–2007 at the Malopolska Plant Breeding Station in Skrzeszowice near Krakow (220 m a.s.l) on three forage cultivars of Poa pratensis (Skrzeszowicka, Duna and Balin). The investigations aimed at determining the effect of mineral fertilization mainly with nitrogen on the quantity of seed. The studies analysed three nitrogen fertilizer doses (60, 90 and 110 kg N ha–1) which were used as a whole or divided into two or three parts. Moreover assessed were several dates of nitrogen application: early spring, “under the panicle” and the autumn date. Both the dose of nitrogen and the date of its application significantly affected the number of plants per 1 m2. Mineral fertilization with nitrogen dosed 110 kg N ha–1 and divided into two parts resulted in about 5 times greater seed yields than in the objects without fertilization obtained from Balin cultivar (577.4 kg ha–1) and Skrzeszowicka cultivar (543.9 kg ha–1). A significantly lower crop yield was produced by Duna cultivar (245.2 kg ha–1).

PL

Praca zawiera zestawienie wyników badań polowych i laboratoryjnych przeprowadzonych w Stacji Małopolskiej Hodowli Rooelin – HBP w Skrzeszowicach koło Krakowa (220 m n.p.m.) w latach 2005–2007 z trzema pastewnymi odmianami wiechliny łąkowej (Skrzeszowicka, Duna, Balin). Badania miały na celu okreoelenie wpływu nawożenia mineralnego, głównie azotem, na wielkooeć plonu nasion. W badaniach uwzględniono trzy dawki nawożenia azotem (60, 90 i 110 kg N ha–1), które stosowano jednorazowo bądź dzielono na dwie lub trzy części. Ponadto ocenie poddano kilka terminów stosowania azotu: wczesnowiosenny, na początku kłoszenia i termin jesienny. Wielkooeć dawki azotu, jak również termin jego stosowania wpłynął na ilości roślin na 1 m2. Pod wpływem nawożenia mineralnego azotem w dawce 110 kg N ha–1 dzielonej na dwie części uzyskano w odniesieniu do obiektów nie nawożonych około 5-krotnie wyższe plony nasion u odmiany Balin (587,4 kg ha–1) oraz u odmiany Skrzeszowickiej (543,9 kg ha–1). Istotnie niższym plonowaniem odznaczyła się odmiana Duna (245,2 kg ha–1).

3

Struktura wielocechowej zmiennosci odmianowej wiechliny lakowej [Poa pratensis L.]

84%

Mankowski D. R. , Laudanski Z. , Martyniak D. , Flaszka M.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

|

2009

|

nr 254

189-200

4

Próba zastosowania stopniodni do oceny rozwoju traw na przykładzie Poa pratensis L.

83%

Makowiecki J.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

1965

|

tom 55

5

Badanie cech warunkujących zawiązywanie nasion, ich jakość oraz plon w wybranych gatunkach traw wieloletnich

83%

Zurek G. , Martyniak D. , Prokopiuk K. , Rachwalska A. , Paszkowski E. , Jurkowski M.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

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2019

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nr 286

6

RERS w badaniach allelopatycznych oddzialywan Poa pratensis na niektore gatunki traw

71%

Lipinska H. , Oleszek W.

Łąkarstwo w Polsce

|

2001

|

tom 04

69-74

EN

The biological activities of root exudates from Poa pratensis (donor) were examined in biotest in which germination and height and mass of seedlings of Dactylis glomerata, Festuca pratensis and Phleum pratense (acceptors) were evaluated. The experiment was performed using root exudate recirculating system (RERS). It was documented that root secretion of Poa pratensis circulating in a closed cycle considerably limited germination of Dactylis glomerata and Phleum pratense, but only slightly limited germination of Festuca pratensis. It also negatively influenced the height of Phleum pratense seedlings, in the first growth as well as during regrowth after first cut; in case of Dactylis glomerata only the height of the plants after first cut was influenced. They had no pronounced influence on the height of Festuca pratensis seedlings. The application of amberlit XAD-4 reduced negative influence of root secretion of Poa pratensis on the height of Phleum pratense and Dactylis glomerata seedlings. Dry matter accumulation by tested grass species was reduced significantly at the presence of Poa pratensis root exudate as compared to the control; exception was Festuca pratensis, which was not influenced. The highest effectiveness of XAD-4 in limiting negative influence of Poa pratensis secretion on biomass of the tested species was found in the case of Phleum pratense.

7

Wspolzaleznosc pomiedzy masa tysiaca nasion a wybranymi cechami morfologicznymi i biologicznymi form gazonowych Poa pratensis L.

71%

Zylka D. , Pronczuk S.

Łąkarstwo w Polsce

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2000

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tom 03

193-198

EN

The aim of the study was to recognise of thousand seed weight (TSW) of 44 breeding forms of Poa pratensis L. and its relationship to seed yield, leaf width, number of generative shoots, plants height, heading time. The forms of Poa pratensis including 7 cultivars, 13 breeding strains and 24 ecotypes were tested during 1997-98 in Radzików (central Poland). The forms were divided according to average of TSW in three groups: small seeds <0,300 g, medium seeds 0,300-0,350 g, and large seeds >0,350 g. Generally range of TSW was from 0,245 g to 0,425 g. The TSW of most forms was stable by years and replications. Range of coefficient variability value was from 2,4% to 15,1% for ecotypes and 4,0-6,0% for cultivars. Not significant correlation were found between TSW and seed yield, leaf width, number of generative shoots and heading time. Significant correlation between TSW and plants height was found (r = -0,40***).

8

Utrzymanie sie Lolium perenne i Poa pratensis w runi pastwiskowej na glebie torfowo-murszowej

71%

Warda M. , Krzywiec D.

Łąkarstwo w Polsce

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2002

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tom 05

173-180

EN

The grazing studies were conducted in two experiments established in 1996 and located on peat-muck soil. A randomised block design with four replications was used. The investigations with two sward types in every trial aimed to compare the maintenance of Lolium perenne and Poa pratensis in the pasture under postboggy habitat. The mentioned species were the main grass components in grass-clover mixtures, fertilized with 40 kg ha⁻¹ N and also in grass mixtures, fertilised with 40, 80 and 120 kg ha⁻¹ N. Seven cultivars or Trifolium repens were included to grass mixtures. As the white clover cultivar was never significant then the results from the seven grass-clover treatments were pooled in the data presentation. The pasture swards were grazed rotationally with Limousine cattle four times a grazing season. Samples of the herbage were analysed for the botanical composition by manual separation and expressed on a weight basis. Lolium perenne grew well in postboggy habitat and became rapidly predominant species in grass and grass-clover sward. Low resistance to frost in December and January in 1996 to 1997 was the most important reason of Lolium perenne content variation in the pasture sward. However, during the vegetative season of 1997 proceeded good regeneration of this species. Development of Poa pratensis in the sward also depended on climatic conditions. High rainfalls in late autumn of 1996 and 1997 influenced negatively stability of this specics in the grass community. Presence of Trifolium repens in the pasture sward affected beneficially the wintering of Lolium perenne and favoured the expansion of Poo pratensis.

9

Wlasciwosci biologiczne i chemiczne Poa pratensis istotne w kreowaniu odmian hodowlanych uzytkowanych pastwiskowo

71%

Kozlowski S. , Szymkowiak P. , Swedrzynski A.

Łąkarstwo w Polsce

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2003

|

tom 06

97-110

EN

Poa pratensis is a grass species characterised by a wide range of utilisation possibilities. As a fodder grass, it is considered as an irreplaceable element of grassland sward. Moreover, this grass species is gaining in importance as lawn grass. In recent years, it has been increasingly viewed as a turf-forming grass species appropriate for difficult sites, including industrial sites. One of the most valuable advantages of Poa pratensis is its persistence. In this regard, it is comparable with Lolium perenne. Its other asset is its considerable turf-forming capability, albeit somewhat delayed. A good evidence of its growing importance is the breeding work carried out on this species with a collection of developed cultivars quite different with regard to their utilisation potentials. It is interesting to note that it is increasingly dominated by fodder cultivars and, therefore, any appearance of a new fodder cultivar, especially one suitable for pastures, deserves attention. On the other hand, such creations raise concern of evaluation criteria. The objective of the research project was to determine the importance of biological and chemical properties of Poa pratensis in the development of cultivars designed for pasture utilisation. The performed investigations were conducted on the following four fodder cultivars of this species: 'Skrzeszowicka' [PL], 'Skiz' [PL], 'Balin' [DK] and 'Slezanka' [CZ]. The multi-cut experiment was situated at a Cultivar Evaluation Station in Śrem. The following assessment criteria were applied: concentrations of total nitrogen anp nitrates, sugars and carbohydrate complex (lignin, chlorophyll and carotene dyes), selected mineral components as weil as the abundance of foliage and yields. It turned out that a moderate and systematic fertilisation allows obtaining sward characterised by an optimal - from the nutritional point of view - chemical composition. Another important feature deserving attention is a considerable phytochemical stability of the cultivars. The application of such a wide spectrum of evaluation criteria allowed determining numerous correlations. The most interesting of them were those, which indicate the existence of relationships between the chemical composition and the assimilation area of leaf blades, and cultivar yields. The observed correlations can be utilised in the process of developing new, improved cultivars, better than those used in the performed experiments.

10

Sporogenesis and embryo development in apomictic Poa pratensis genotypes

71%

Wojciechowski A. , Niemann J.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2014

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tom 56

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nr 1

11

Porównanie wybranych odmian wiechliny łąkowej (Poa pratensis) użytkowanej w systemie ‘park’

71%

Grygierzec B. , Janus B.

Annales Universitatis Mariae Curie-Skłodowska. Sectio E. Agricultura

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2016

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tom 71

|

nr 4

12

Cechy uzytkowe odmian Poa pratensis przeznaczonych na trawniki zacienione

71%

Pronczuk M. , Pronczuk S.

Zeszyty Naukowe Uniwersytetu Przyrodniczego we Wrocławiu. Rolnictwo

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2006

|

tom 88

229-239

13

Fitotoksyny martwych korzeni Poa pratensis jako czynnik hamujacy kielkowanie nasion traw.

71%

Lipinska H. , Harkot W.

Łąkarstwo w Polsce

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1998

|

tom 01

159-164

EN

On a basis of laboratory tests it was found that phyto-toxins released from faded Poa pratensis roots inhibited seed germination (especially roots from a sod taken in autumn) as well as the initial development of Alopecurus pratensis, Dactylis glomerata, Festuca pratensis, and Phleum pratense seedlings. Their negative effect appeared particularly as weaker than for control development of seedling roots. In a nearby of faded Poa pratensis roots seedlings of tested grass species were characterized by significantly shorter elongation roots, no matter the species and term of meadow-grass sod taking (autumn or winter). Seedling height of particular grasses was also lower than for controls, but those differences were not significant.

14

Występowanie zbiorowiska Poa pratensis-Festuca rubra w warunkach zaniedbań w użytkowaniu łąk

71%

Stamirowska-Krzaczek E.

Annales Universitatis Mariae Curie-Skłodowska. Sectio E. Agricultura

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2015

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tom 70

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nr 1

15

Apomixis - preliminary lessons from wheat egg cells, Poa pratensis, Hypericum perforatum and Arabidopsis thaliana

71%

Matzk F. , Prodanovic S. , Czihal A. , Tiedemann J. , Koszegi D. , Arzenton F. , Blattner F. , Kumlehn J. , Altschmied L. , Schubert I. , Johnston A. , Grossniklaus U. , Baumlein H.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2005

|

tom 47

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nr 1

16

Ocena przydatnosci odmian i ekotypow wiechliny lakowej [Poa pratensis] na trawniki niskonakladowe [ekstensywne]

67%

Pronczuk M. , Pronczuk S.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

|

2008

|

nr 248

147-159

17

Effect of Puccinia graminis ssp. Pers. infection on the macroelements' content in selected grass species

67%

Grzybieniec B. , Radkowski A.

Chemia i Inżynieria Ekologiczna

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2006

|

tom Vol. 13, nr 1-2

61-65

EN

The investigations were conducted in the years 2002-2004 in the Floriculture Station in Skrzeszowice near Krakow (altitude of 220 m). In the experimental object designed by the split-splot method in four replicants, four grass species were taken juto account i.e.: Festuca pratensis cultivar Skawa, Festuca rubra cultivar Brudzyńska, Phleum pratense cultivar Skald and Poa pratensis cultivar Eska 46. Among all examined species, uninfected and infected with stalk rust (Puccinia graminis) plants were selected. The level of infection determined in a 9-degree scale amounted to 5°, 4°,6° and 2°, respectively. The aim of this work was to determine the infection influence on the macroelements' con-tent in selected grass species. Uninfected plants were characterised with the highest total protein content: from 8 % for Phleum pratense to 27 % for Poa pratensis, phosphorus: from 13 % (Phleum pratense) to 36 % (Festuca pratensis, Poa pratensis) and potasium: from 9 % (Festuca rubra) to 70 % (Poa pratensis) than infected plants. On the other hand, infected species were richer in calcium, magnesium and sodium by 34-48 %, 11-20 % and 19-148 %, respectively.

PL

Badania przeprowadzono w latach 2002-2004 na terenie Stacji Hodowli Roślin w Skrzeszowicach pod Krakowem (220 m n.p.m.). W doświadczeniu za-łożonym metodą losowanych bloków w czterech powtórzeniach, uwzględniono cztery gatunki traw Festuca pratensis odmiana Skawa, Festuca rubra odmiana Brudzyńska, Phleum pratense odmiana Skald oraz Poa pratensis odmiana Eska 46. Spośród badanych gatunków wydzielono rośliny zdrowe i porażone przez rdzę źdźbłową (Puccinia graminis), przy czym stopień porażenia w skali 9 stopniowej wynosił odpowiednio 5°, 4°, 6° i 2°. Niniejsza praca miała na celu określenie wpływu porażenia na zawartość makroelementów u wybranych gatunków traw. Rośliny zdrowe charakteryzowały się większą zawartością azotu ogólnego od 8 % u Phleum pratense do 27 % u Poa pratensis, fosforu od 13 % (Phleum pratense) do 36 % (Festuca pratensis. Poa pratensis) i potasu od 9 % (Festuca rubra) do 70 % (Poa pratensis) niż rośliny porażone. Gatunki zainfekowane były bardziej zasobne w wapń o 34-85 %, magnez o 11-20 % oraz w sód o 19-148 %.

18

Zmiennosc i korelacje niektorych cech ekotypow populacji Poa pratense L.

67%

Sawicki B.

Acta Agrobotanica

|

1993

|

tom 46

|

nr 2

77-85

EN

The collection consisted of 20 selected ecotypes of Poa pratensis L. which were compared with Skrzeszowicka variety. In respect of the studied features a few ecotypes appeared to be predominant over the standard variety, although this predominance was not statistically proved. It was found that weakly yielding varieties formed few above-ground shoots of a low height. Their leaves were short but the leaf width did not differ from that of good-yielding forms. From among the collected ecotypes only one, yielding on the level of a standard variety, belonged to early forms. The yield of green mass correlated best with the number of vegetative and generative shoots as well as with the length of flag leaf.

PL

W kolekcji zgromadzono 20 ekotypów Pon pratensis L. i porównywano je z odmianą Skrzeszowicką. W badaniach uwzględniono: plony, liczbę pędów wegetatywnych i genetatywnych, wysokość roślin, długość kwiatostanów, długość i szerokość liści odziomkowych i flagowych, lazy fenologiczne oraz przezimowanie. Ekotypy stanowiły bardzo zróżnicowany material, który może być wykorzystany w hodowli nowych odmian. Wyodrębniono egzemplarze o różnej wczesności i odporności na choroby grzybowe.

19

Ocena smialka darniowego [Deschampsia caespitosa L.] Brok w mieszankach trawnikowych z wiechlina lakowa [Poa pratensis L.] w warunkach intensywnego uzytkowania i zacieniania

67%

Pronczuk S.

Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin

|

2004

|

nr 233

211-217

20

Allelopatyczny wplyw wydzielin korzeniowych Poa pratensis L. na kielkowanie oraz poczatkowy wzrost i rozwoj Phleum pratense L.

59%

Lipinska H. , Harkot W.

Łąkarstwo w Polsce

|

1999

|

tom 02

75-80

EN

The studies were carried out in laboratory conditions. Poa pratensis root exudates were obtained in the CRETS (continuous root exudate trapping system) and then in glass platter experiment was determined their biological activity in biotest on seed germination, length of roots and height of Phleum pratense seedlings. In the experiment were used the following concentrations of Poa pratensis root exudates: 0,80%, 0,40% and 0,20%. Conducted studies showed that higher concentrations of Poa pratensis root exudates (0,80% and 0,40%) caused total inhibition of germination. Lower concentrations of exudates significantly limited number of germinated seeds and inhibited of root elongation and growth of tested species seedlings. These results indicate that Poa pratensis root exudates seem to include chemical compounds of allelopathic nature.