Wyniki wyszukiwania

1

Gynogeneza in vitro jako metoda haploidyzacji roślin

100%

Mol R.

Biotechnologia

|

2003

|

nr 3

2

Fertilization in angiosperms - how much different from the fertilization in animals?

100%

Mol R.

Acta Biologica Cracoviensia. Series Botanica. Supplement

|

2016

|

tom 58

|

nr 1

3

How pollination affects the egg cell maturation in maize?

100%

Mol R.

Acta Biologica Cracoviensia. Series Botanica. Supplement

|

2005

|

tom 47

|

nr 1

4

Gynogenetyczne rosliny jeczmienia otrzymane in vitro w hodowli niezapylonych zalazni

100%

Mol R.

Hodowla Roślin, Aklimatyzacja i Nasiennictwo

|

1992

|

tom 36

|

nr 1-2

5

Uroczystość odnowienia doktoratu profesora dr hab. Macieja Zenktelera (Uniwersytet im. Adama Mickiewicza w Poznaniu, 19 marca 2012)

100%

Mol R.

Wiadomości Botaniczne

|

2012

|

tom 56

|

nr 1-2

6

Metody przejaśniania tkanek stosowane w embriologii roślin

100%

Mol R.

Wiadomości Botaniczne

|

1988

|

tom 32

|

nr 4

7

Embryological aspects of in vitro gynogenesis in plant organ cultures

100%

Mol R.

Acta Biologica Cracoviensia. Series Botanica

|

1999

|

tom 41

The paper reviews female gametophyte development in vitro, the pathways of gynogenetic embryogeny, and autonomous endosperm development in vitro, and presents some implications for future investigation of apomictic processes. In most species studied so far, the pattern of embryo sac development was not altered by in vitro conditions, and some rare deviations could be additional sources of gynogenetic embryos. Meiosis in vitro resulted in megaspore formation followed by embryo sac development or direct embryogenesis. Gynogenesis in vitro occurs via various embryological processes. Embryos developed parthenogenetically from egg cells in twelve species. Apogamic development from the synergid or from antipodal cells was found in six species. Early development of gynogenetic embryos showed some similarities to zygotic embryogenesis, but then the embryos often remained undifferentiated or formed microcalli and protocorm-like structures. In nine species the central cell in ovary/ovule cultures was sporadically stimulated to divide into free-nuclear endosperm. Generally only one gynogenetic structure developed per embryo sac, and no embryos appeared in ovules containing autonomous endosperm. Cellular programs for the autonomous development of endosperm and embryo seem quite different or even competitive in vitro. Various approaches should be taken in future research on apomixis. Classical and novel cytological methods, and in vitro organ and cell cultures should be combined with molecular techniques and genetic studies.

8

To our Professor, Maciej Zenkteler

100%

Mol R.

Biological Bulletin of Poznań

|

2001

|

tom 38

|

nr 1

9

Zaplodnienie in vitro u roslin kwiatowych

75%

Mol R.

Kosmos

|

2003

|

tom 52

|

nr 4

459-467

10

Embryo sac development and the problem of low seed set in alfalfa (Medicago sativa L.)

63%

Mol R., Weigt D.

Acta Biologica Cracoviensia. Series Botanica. Supplement

|

2016

|

tom 58

|

nr 1

11

Cyto - embryological approach to the problem of low seed set in Medicago sativa L.

63%

Mol R., Weigt D.

Acta Biologica Cracoviensia. Series Botanica. Supplement

|

2018

|

tom 60

|

nr 1

12

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Kiełkowanie pyłku różnych gatunków na fragmentach szyjki słupka lilii (Lilium) ‘Stargazer’ in vitro

63%

Mol R., Pajkert M.

Zeszyty Problemowe Postępów Nauk Rolniczych

|

2002

|

tom 488

|

nr 2

13

The use of pollen tube in vitro cultures for determination of nuclei positions in angiosperm pollen tubes

63%

Bultrowicz M., Mol R.

Acta Biologica Cracoviensia. Series Botanica. Supplement

|

2009

|

tom 51

|

nr 1

14

Formation of adventitious buds on the leaves of Aesculus hippocastanum L. cultured in vitro

63%

Wojciechowicz M. K., Mol R.

Bulletin of the Polish Academy of Sciences. Biological Sciences

|

1992

|

tom 40

|

nr 1

15

Light microscopy study on the kinetics of double fertilisation in Secale cereale L.

63%

Jurkowska K. A., Mol R.

Biological Bulletin of Poznań

|

2001

|

tom 38

|

nr 1

16

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

51%

Mol R., Weigt D., Broda Z.

Acta Biologica Cracoviensia. Series Botanica

|

2011

|

tom 53

|

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.

17

Does the maize pistil recognize the dropping pollen on stylodium as a mechanical stimulus?

51%

Filek M., Mol R., Dubert F., Matthys-Rochon E.

Acta Physiologiae Plantarum

|

1999

|

tom 21

|

nr 3 suppl.

18

Ocena mozliwosci regeneracji roslin po mikromanipulacji komorek woreczka zalazkowego Zea mays L.

51%

Mol R., Matthys-Rochon E., Dumas C.

Zeszyty Naukowe Akademii Rolniczej w Krakowie. Sesja Naukowa

|

1997

|

tom 50

487-490

19

Further studies on causes for poor seed setting in alfalfa

51%

Mol R., Weigt D., Broda Z.

Acta Biologica Cracoviensia. Series Botanica. Supplement

|

2012

|

tom 54

|

nr 1

20

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

51%

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

Acta Biologica Cracoviensia. Series Botanica. Supplement

|

2014

|

tom 56

|

nr 1

Ograniczanie wyników

Gynogeneza in vitro jako metoda haploidyzacji roślin

Fertilization in angiosperms - how much different from the fertilization in animals?

How pollination affects the egg cell maturation in maize?

Gynogenetyczne rosliny jeczmienia otrzymane in vitro w hodowli niezapylonych zalazni

Uroczystość odnowienia doktoratu profesora dr hab. Macieja Zenktelera (Uniwersytet im. Adama Mickiewicza w Poznaniu, 19 marca 2012)

Metody przejaśniania tkanek stosowane w embriologii roślin

Embryological aspects of in vitro gynogenesis in plant organ cultures

To our Professor, Maciej Zenkteler

Zaplodnienie in vitro u roslin kwiatowych

Embryo sac development and the problem of low seed set in alfalfa (Medicago sativa L.)

Cyto - embryological approach to the problem of low seed set in Medicago sativa L.

Kiełkowanie pyłku różnych gatunków na fragmentach szyjki słupka lilii (Lilium) ‘Stargazer’ in vitro

The use of pollen tube in vitro cultures for determination of nuclei positions in angiosperm pollen tubes

Formation of adventitious buds on the leaves of Aesculus hippocastanum L. cultured in vitro

Light microscopy study on the kinetics of double fertilisation in Secale cereale L.

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

Does the maize pistil recognize the dropping pollen on stylodium as a mechanical stimulus?

Ocena mozliwosci regeneracji roslin po mikromanipulacji komorek woreczka zalazkowego Zea mays L.

Further studies on causes for poor seed setting in alfalfa

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