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ESTUDIOS EMBRIOLOGICOS Y CITOLOGICOS EN LA YERBA MATE ILEX PARAGUARIENSIS (AQUIFOLIACEAE)

CESAR OTTO NIKLAS
Bonplandia
Vol. 6, No. 1 (1987), pp. 45-56
Stable URL: http://www.jstor.org/stable/43574277
Page Count: 12
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
ESTUDIOS EMBRIOLOGICOS Y CITOLOGICOS EN LA YERBA MATE ILEX PARAGUARIENSIS (AQUIFOLIACEAE)
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Abstract

The chromosome counts of Ilex paraguariensis St. Hil. confirmed the number 2n=40 for all the material studied. In the analysis of the meiosis it was proved that it has a normal behaviour, presenting 20 II. In the pollen analyzed about 100% of fertility was found. It was established that the embryo sac is of the Polygonum type. When the fruit is ripe, the embryos are in different stages: globular 2,6%; heart 70,24%; post heart 23,3%; torpedo 2,62% and mature 0,96% . These embryos continue growing when the seed is on conditions to germinate, this is the reason of the slow development observed in the germination.

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