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Receptive tip of a carpel
- The stigma (pl.: stigmas or stigmata) is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower.
en.wikipedia.org/wiki/Stigma_(botany)
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The stigma (pl.: stigmas or stigmata) [1] is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. Description. Stigma of a Tulipa species, with pollen. Closeup of stigma surrounded by stamens of Lilium 'Stargazer')
Dec 24, 2021 · The stigma is a swollen, knob-like structure. It can be either hairy or sticky, or sometimes both to trap pollen grains. In wind-pollinated flowers, like grasses, it may be feathery and branched or elongated. However, for some other flowers, it may be compact and has a sticky surface.
Jun 11, 2004 · In this review, we (1) survey recent discoveries of pollen and stigma functions both before and after they make contact, and (2) address the great diversity in pollen and stigma structures across taxa, focusing on how they accomplish key tasks in pollination.
- Anna F. Edlund, Robert Swanson, Daphne Preuss
- 2004
Oct 17, 2024 · 1 The glandular sticky surface at the tip of a carpel of a flower, which receives the pollen. In insect-pollinated plants the stigmas are held within the flower, whereas in wind-pollinated species they hang outside it. 2 See eyespot. From: stigma in A Dictionary of Biology ».
The stigma is a specially adapted portion of the pistil modified for the reception of pollen. It may be feathery and branched or elongated, as in such wind-pollinated flowers as those of the grasses, or it may be compact and have a sticky surface.
1. The receptive tip of the carpel, which receives pollen at pollination and on which the pollen grain germinates. The stigma is adapted to catch and trap pollen, either by combing pollen off visiting insects or by various hairs, flaps, or sculpturings.
Definition. The stigma is the part of the female reproductive structure of flowering plants where pollen grains land and germinate. It plays a critical role in reproduction by receiving pollen during pollination, which is essential for fertilization and the development of seeds.
