Reproduction in Halopteris (Sphacelariales)

Publisher Website
Google Scholar
Abstract
Oogamy is recorded in five southern species of Halopteris. In each the gametangia and asexual sporangia occur in similar sori, although situated on separate plants. The plurilocular antheridia and the unilocular oogonia occur within one and the aame sorus. In both the dehiscence is apical. In H. congesta fertilization has been observed in cultures. The polarity of the zygote is established by the direction of the first-formed wall. Early divisions convert it into a nodule composed of small cells. First rhizoids appear and then cylindrical shoots arise from the opposite pole. Sporelings of five New Zealand species of Halopteris have been raised in culture. The conditions in the culture greatly affected the character of the sporelings, the simplest of which at the end of 2 months' growth were only uniseriate filaments. The best developed sporelings had a compact basal disc with up to four upright shoots showing the beinnings of branching.

This publication has 0 references indexed in Scilit: