In:
Botanical Journal of the Linnean Society, Oxford University Press (OUP), Vol. 201, No. 4 ( 2023-03-21), p. 400-414
Abstract:
Arecaceae subtribe Mauritiinae are a lineage of Neotropical dioecious species in subfamily Calamoideae, the earliest diverging and most diverse group of palms regarding sexual systems. Ontogenetic and anatomical studies of reproductive structures contribute to the understanding of evolutionary relationships, but there is a lack of detailed information. We describe the anatomical floral development of Lepidocaryum tenue, Mauritia flexuosa and Mauritiella armata (subtribe Mauritiinae) using standard light microscopy techniques. Three central moments in the development of pistillate and staminate flowers were identified: the initial phase of development of the floral meristem; the phase of determination of the whorls that will compose the pistillate and staminate flowers; and the phase of differentiation (pre-anthesis) of these whorls. Although the pre-anthetic flowers are diclinous, they are initially monoclinous, suggesting a hermaphrodite ancestor for Mauritiinae. The development is asynchronous since, in pre-anthesis, the pistillate flowers have staminodes that produce non-viable pollen grains, whereas the staminate flowers do not even have a pistillode. Staminodes may have a secondary function in attracting floral visitors.
Type of Medium:
Online Resource
ISSN:
0024-4074
,
1095-8339
DOI:
10.1093/botlinnean/boac063
Language:
English
Publisher:
Oxford University Press (OUP)
Publication Date:
2023
detail.hit.zdb_id:
1462255-5
SSG:
12
