Several different sporophytes
were collected in the following two localities.
Generally, the sequence and timing of sporophyte
development for each species was similar for each forest age class so data was pooled for each species and peaks of each phenostage were used to better show the phenological development (Fig.
development was assessed by removing three randomly selected specimens from each vial at 14 and 28 days of culture, for a total of 18 specimens for each concentration of Pb[(N[O.
Haploids are sporophytes
with the gametophytic chromosome number.
Germination of spores and growth of gametophytes and sporophytes
of Rumohra adiantiformis (Forst.
A new approach to kelp mariculture in Chile: production of free-floating sporophyte
seedlings from gametophyte cultures of Lessonia trabeculata and Macrocystis pyrifera.
of flowering plants consists of what is generally recognized as "the plant.
Alternatively, the sporophyte
offspring of hermaphrodites might benefit from reduced competition in the presence of fewer neighbors because adjacent male gametophyes would produce only sperm.
While recording fern species diversity in 1987, in a forest on sandy-loam soils near the settlement of Quebrada Castillo in the Amuesha community of Siete de Junio, in the Palcazu valley of central Peru at 350 m elevation (Young & Leon 1989), we found two adult sporophyte
individuals of Polytaenium cajenense (Desv.
Secondly, the sporophyte
(2n) phase of bryophytes remains attached to its gametophyte parent throughout its development to maturity and often past spore release.
tea (reported as Ampithoe tea) on a single Pelvetia fastigiata sporophyte
In the first method the whole 'head' of the kelp sporophyte
is cut off between the bulb at the top of the stipe and the primary blade.
Plants have two generations: sporophyte
Each species identified was described morphologically using the gametophyte characters (leaf arrangement, midrib, base, apex, margin, cells, and shape) and sporophyte
characters (size, shape, texture of capsule and seta, number of teeth).
and gametophyte morphology of Asplenium dareoides (Aspleniaceae, Pteridophyta).