Araucaria angustifolia seeds are the basis for the rural economy in southern Brazil, and the
species presents different botanical varieties. The objective of this work was to evaluate the …

Araucaria angustifolia, the Brazilian pine, is an endangered native conifer with economic
and ecological importance. The female cone develops seeds containing the zygotic embryo …

This study aimed to evaluate changes in germination and in the amount of carbohydrates,
starch, proteins, and lipids of A. angustifolia seeds at different stages of development. Seeds …

Development of the embryo of Encephalartos natalensis from a rudimentary meristematic
structure approximately 700 μm in length extends over 6 months after the seed is shed from …

This study addresses gaps in our understanding of pre-fertilization and archegonia
development and reinterprets embryonic ontogenesis from Burlingame (Bot Gaz 59: 1–39 …

The occurrence of spontaneous sexual polyembryony is described and characterized for
cultivated olive (Olea europaea L.). We screened seeds from 24 olive cultivars and found …

Simple polyembryony, where one gametophyte produces multiple embryos with different
sires but the same maternal haplotype, is common among vascular plants. We develop an …

Simple polyembryony–where one gametophyte produces multiple embryos with different
sires but the same maternal haplotype–is common in conifers, ferns, horsetails and other …

Araucaria angustifolia seeds are the basis for the rural economy in southern Brazil, and the
species presents different botanical varieties. The objective of this work was to evaluate the …

Background Araucaria angustifolia (Bert.) O. Kuntze is a mainly dioecious species that
reproduces through outcrossing. However, some monoecious trees have been identified …