Wyniki wyszukiwania - AGRO

1

Pierwsza generacja modrzewia europejskiego [Larix decidua Mill.] powstala z kontrolowanych krzyzowan na szczepach

100%

Koziol C., Kosinski G.

Arboretum Kórnickie

|

1996

|

tom 41

95-108

2

Modrzew

100%

Grzelak M.

NIWA Rolnicza. Nowości, Informacje, Wiadomości, Agrobiznes

|

2004

|

nr 05

8-9

3

Formation of female gametophyte of Larix decidua Mill. in plants from West Ukraine

100%

Fedorowska J., Zhivitsky Z.

Acta Biologica Cracoviensia. Series Botanica. Supplement

|

2000

|

tom 42

|

nr 1

4

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Model wzrostu dla modrzewia europejskiego (Larix decidua Mill.) wykorzystujący cechy taksacyjne drzewostanu

86%

Bruchwald A., Dmyterko E., Wojtan R.

Leśne Prace Badawcze

|

2011

|

tom 72

|

nr 1

5

Proweniencyjne roznice w odpornosci modrzewia europejskiego [Larix decidua Mill.] na susze

86%

Szeligowski H.

Sylwan

|

2001

|

tom 145

|

nr 06

65-78

6

Charakterystyka wielofazowego procesu wyluszczania nasion modrzewia europejskiego Larix decidua Mill. na przykladzie wyluszczarni gospodarczej w Czarnej Bialostockiej

86%

Aniszewska M.

Leśne Prace Badawcze

|

2008

|

tom 69

|

nr 2

155-163

7

Zmiana wielkosci krzywizn u modrzewi roznych pochodzen na powierzchni doswiadczalnej w Rogowie

86%

Szeligowski H., Andrzejczyk T., Szkup J.

Leśne Prace Badawcze

|

2010

|

tom 71

|

nr 1

75-80

8

Aberrant phyllotactic patterns in cones of some conifers: a quantitative study

86%

Fierz V.

Acta Societatis Botanicorum Poloniae

|

2015

|

tom 84

|

nr 2

The scale patterns of 6000 cones from one single tree of Pinus nigra Arn. have been examined. Apart from the main Fibonacci pattern with 8 and 13 parastichies, nine aberrant spiral patterns with Fibonacci-type sequences have been found. They are quite rare and occur with different frequencies. The parastichy quotient 8/13 of the prevalent pattern is very close to the golden ratio 0.618. In case of the black pine it appeared that the greater the deviation of the parastichy quotient m/n from 0.618, the rarer the pattern. Similar results obtained for the sample of 1506 cones collected from three individual trees of larch (Larix decidua Mill.) suggest a true correlation between the frequency of a pattern and the deviation of its parastichy quotient from the golden ratio.

9

Wpływ warunków klimatycznych na wielkość przyrostów radialnych modrzewia europejskiego [Larix decidua Mill.] występującego w Karpatach

86%

Feliksik E.

Sylwan

|

1992

|

tom 136

|

nr 05

61-67

10

Mikrorozmnazanie modrzewia europejskiego [Larix decidua Mill.] metoda somatycznej embriogenezy

86%

Szczygiel K.

Leśne Prace Badawcze

|

2005

|

nr 4

47-76

11

Wlasciwosci drewna modrzewia rosnacego na zwalowiskach gorniczych

86%

Splawa-Neyman S., Malecki S., Owczarek Z.

Las Polski

|

1992

|

nr 13-14

20-21

12

Porównanie wydajności metod izolacji DNA z igieł i drewna modrzewia europejskiego (Larix decidua Mill.)

86%

Kowalczyk K., Jaruga A., Zapalska M.

Agronomy Science

|

2018

|

tom 73

|

nr 2

13

Indukcja somatycznej embriogenezy w kulturach kalusowych modrzewia europejskiego [Larix decidua Mill.]

86%

Zytkowiak R.

Arboretum Kórnickie

|

1995

|

tom 40

117-123

14

Quantitative evaluation of the pollination process of european larch [Larix decidua Mill.] in seed orchard

86%

Krizo M., Slobodnik B.

Acta Societatis Botanicorum Poloniae

|

1996

|

tom 65

|

nr 1-2

117-121

15

Stale krzywe wysokosci dla drzewostanow modrzewia europejskiego [Larix decidua Mill.]

86%

Bruchwald A., Zybura H.

Sylwan

|

2002

|

tom 146

|

nr 12

5-9

16

Rozwoj i wzrost modrzewia europejskiego [Larix decidua Mill.] na zwalowisku zewnetrznym kopali siarki w Piasecznie

86%

Wegorek T., Harabin Z.

Roczniki Gleboznawcze

|

2004

|

tom 55

|

nr 2

461-470

17

Problemy ochrony lokalnych populacji modrzewi w rezerwatach lesnych Wielkopolski

86%

Malinski T.

Przegląd Przyrodniczy

|

1993

|

tom 04

|

nr 3

79-90

18

Stanovenie priechodnosti mlatacky sisiek

86%

Piszczalka J., Bajla J.

Prace Komisji Nauk Rolniczych. Polska Akademia Umiejętności

|

1998

|

tom 01

|

nr 2

19

Immunocytochemical localization of rDNA and its newely formed transcripts in prophase nucleoli of meiocytes in larch Larix decidua Mill.

86%

Niedojadlo J., Smolinski D. J., Gorska-Brylass A.

Acta Biologica Cracoviensia. Series Botanica et Zoologia. Supplement

|

1997

|

tom 39

|

nr 1

20

Ovule, megaspores, and female gametophyte formation in Larix decidua Mill. [Pinaceae]

86%

Slobodnik B., Guttenberger H.

Acta Biologica Cracoviensia. Series Botanica

|

2000

|

tom 42

|

nr 2

Compared to the formation of male generative organs, the development of female sporogenous tissue of the European larch (Larix decidua Mill.) is considerably delayed. The young megaspore mother cell (megasporocyte, MMC) is not observable until late October, a short time before the period of dormancy. In early spring, MMCs become moderately enlarged, with intensive accumulation of starch grains around the nucleus. At the end of the first 10 days of March the MMCs become more rounded in section and the nucleus moves towards the basal part of the cell (near the chalaza). The integument and nucellus become observable at that time and chromosomal strands are visible in the MMC nuclei. Meiosis of MMCs was observed from mid-March to early April. During that period the tip of the integument grows gradually over the nucellus and creates the stigmatic apparatus of the ovule. Instead of the expected tetrads, triads of linearly arranged unequal megaspores were observed in individual ovules at the beginning of pollen shedding. Immediately after meiosis of the MMC, massive growth of the functional chalazal megaspore occurs, along with intensive free-nuclear divisions. The nuclei become located near the megaspore membrane, whereas the whole central part of the developing female gametophyte is filled with an extraordinarily large central vacuole. During intensive growth of the functional megaspore, the innermost layer of the nucellar tapetum gradually disintegrates. This development stage lasts until early May, when the megaspore membrane segregates partially from the nucellar tapetum and the free-nucleate female gametophyte assumes an irregular sac-like shape. The cellular stage of the female gametophyte with typical pyramidal cells at its micropylar end is visible at mid-May. Then the vacuolated (so-called frothy) archegonia gradually forms. The disappearance of vacuoles and the division of the central cell were registered in late May. At the stage of the large female gamete (egg cell) and the small ventral canal cell, the archegonia become fully receptive for fertilization. Our observations indicate that the development of the free-nucleate gametophyte and the formation of cell walls among the nuclei are the most sensitive phases of ovule development in the European larch before fertilization. During these stages, numerous cases of degeneration of the female gametophyte were observed, along with the complete deformation of ovules. The reasons for frequent irregularities are discussed here; the influence of meteorological and nutrient conditions seems especially important.

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