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11 cze 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.
27 sty 2020 · We conceptually summarize how the study of pollen on stigmas of spent flowers can reflect key drivers and functional aspects of the plant–pollinator interaction (e.g. competition, facilitation or commensalism).
24 gru 2021 · The function of sigma is to receive pollen grains and germinate them. First, the stigma captures the pollen. Next, as the pollens stick to it, the dry pollen grains get rehydrated or germinated.
The angiosperm stigma is an efficient structure with both morphological and physiological adaptations that enable pollen capture, hydration and germination. The stigma surface may play a vital part in controlling interspecific hybridization and in regulating...
28 cze 2008 · Reactive oxygen species and reactive nitrogen species, particularly NO, are key components of diverse signalling networks in animals and plants.
11 cze 2004 · There is no doubt that the pistil plays a key role in plant reproduction and that it has multiple functions: it can accept or reject the proper pollen, it sustains pollen tube growth, and it produces and protects the female gametophyte in the ovary.
Controlled hand-pollinations revealed the failure of incompatible pollen to adhere and germinate on stigmas. Our results provided evidence that, while structural in nature, pollen-stigma dimorphisms are tightly associated with
