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Further observations in embryo sac development in Alchemilla L. [subsection Heliodrosium Rothm.]

100%

Izmailow R.

Acta Biologica Cracoviensia. Series Botanica

1994

tom 36

Origin of embryo sacs was examined in further two Alchemilla species: A. acutiloba and A. montícola. The central region of multicellular archesporium shows meiotic tendencies but as a rule, the meiotic division did not advance further than up to I ptophase. Apomeiotic embryo sacs arise from unreduced cells, either from megaspore mother cells (diplospory) or from cells of somatic character (apospory). In the same ovule a few embryo sacs of both types may be formed. Usually only one of them reaches a distinct prevalence and the full maturity.

An efficient screen for embryological events using ripe seeds of monocots and dicots

100%

Matzk F., Meister A.

Acta Biologica Cracoviensia. Series Botanica. Supplement

1999

tom 41

nr 1

Ograniczanie wyników

1 Acta Biologica Cracoviensia. Series Botanica

1 Acta Biologica Cracoviensia. Series Botanica. Supplement

1 Izmailow R.

1 Matzk F.

1 Meister A.

1 1999

1 1994

Wyniki wyszukiwania

Further observations in embryo sac development in Alchemilla L. [subsection Heliodrosium Rothm.]

An efficient screen for embryological events using ripe seeds of monocots and dicots