نتایج جستجو برای: stamens
تعداد نتایج: 557 فیلتر نتایج به سال:
Several new Combretum Loefl. (Combretaceae) collections from Central Africa have revealed a taxonomical confusion in that genus. To correct these mistakes two species, C. pellegrinianum Exell and littoreum (Engler) Engler & Diels, are resurrected one variety, Quisqualis falcata var. mussaendiflora (Engl. Diels) Liben, is transferred again to species level as mussaendiflorum Engl. Diels. The rel...
The PIN family of proteins is best known for its involvement in polar auxin transport and tropic responses. PIN6 (At1g77110) is one of the remaining PIN family members in Arabidopsis thaliana to which a biological function has not yet been ascribed. Here we report that PIN6 is a nectary-enriched gene whose expression level is positively correlated with total nectar production in Arabidopsis, an...
Relative allocation to female and male function in hermaphroditic species often departs from strict equisexuality. Increased femaleness with plant size in animal-pollinated species has been proposed in theory and demonstrated in empirical studies. However, such size-dependent sex allocation (SDS) has not been observed in some insect-pollinated species, throwing doubt on the generalization of SD...
Stamen movements can be understood as a mechanism influencing pollen presentation and increasing outbreeding success of hermaphroditic flowers via optimized male function. In this study we experimentally analyzed the factors regulating autonomous and thigmonastic (triggered by flower visitors) stamen movements in eight species of Loasaceae. Both types of stamen movements are positively influenc...
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