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For example, a common condition is one in which the anthers are introrse early in development, but reorient to the top of the flower, with all the anthers facing downward.
In botany, a staminode is an often rudimentary, sterile or abortive stamen, which means that it does not produce pollen. [1][page needed] Staminodes are frequently inconspicuous and stamen-like, usually occurring at the inner whorl of the flower, but are also sometimes long enough to protrude from the corolla. [citation needed] The arrow points ...
the interpretation of staminode evolution. To examine the evolutionary history of staminodes, we determined an-droecial characters (number of stamen whorls, presence/absence of stami-nodes), floral design (symmetry, blossom type), primary pollen vector, and proposed staminode functionality (if found) for families considered by Chase
This article aims to discuss the shortcomings of the past and current approach of staminodes and proposes definitions of staminode types for use as characters in phylogenetic analyses. Staminodial structures should be classified according to their position and function in the flower.
1 paź 2000 · When a pollinator probing for nectar touches the staminodes, the style is released and contacts the pollinator. Following style contact, the anthers of the two fertile stamens explode and dust the pollinator with pollen.
18 lut 2020 · This test identified three distinct classes: abaxial staminode cell counts (a), adaxial staminode cell counts (b) and the two stamen cell counts (c). The two staminode classes are significantly different at P < 0.05 while the staminode vs. the stamen classes were significantly different at P < 0.01.
8 lut 2022 · Staminodes are floral structures occurring in approximately one-third of the angiosperms. These organs often go unnoticed in nature because they may mimic other floral parts. Consequently, their macro- and micromorphological portrayal in the literature is limited.
