Flower orientation enhances pollen transfer in bilaterally
网页2009年4月1日 · To examine these two hypotheses, we altered the angle of Commelina communis flowers and examined the efficiency of pollen transfer, as well as the behavior of their visitors. We exposed unmanipulated (horizontal-), upward-, and downward-facing flowers to syrphid flies (mostly Episyrphus balteatus ), which are natural visitors to …
网页The two types of yellow anthers are considered to function as floral (pollen) guides to floral visitors in Commelina (Lunau, 2000; Hrycan and Davis, 2005). Commelina communis flowers do not produce nectar, and pollen is the only floral reward for floral visitors such as other Commelinaceae species (Faden, 1992).
网页Commelina benghalensis and Cyanotis axillaris growing in wild pockets in Adavivarm area of western Visakhapatnam city was selected for study during July 2020 to July 2021. These two species were studied for their vegetative growth, flowering period,
Heteromorphic stamen: a strategy in nectarless entomophilous
网页2020年9月17日 · It has been suggested that the dimorphic anthers address the conflict of using pollen, the carriers of male gametes, as a reward to lure pollinators, thereby reducing the available gametes for fertilization. This is accomplished by functionally separating the anthers for ‘feeding’ and ‘pollinating’ purposes.
Colored floral organs influence pollinator behavior and pollen …
网页2007年2月1日 · Commelina diffusa, Dictyospermum montanum, and Rhopalephora scaberrima, which also show heteranthery, attach fertile pollen to pollinator bodies that are less likely to be groomed when...
Floral morphology of the studied Commelina species and
网页This study investigated pollination mechanisms and breeding systems in five Commelina variants: two subspecies of Commelina diffusa (C. diffusa subsp. aquatica and C. diffusa subsp. montana,...
(PDF) Pollination ecology of Commelina benghalensis and …
网页2021年11月22日 · This study investigated pollination mechanisms and breeding systems in five Commelina variants: two subspecies of Commelina diffusa (C. diffusa subsp. aquatica and C. diffusa subsp. montana,...
Pollination Ecology of Commelina Communis (Commelinaceae)
网页The floral biology, pollen/ovule ratio, pollen viability, flower visitors, pollination process and fruit set of Commelina communis were observed, measured and recorded in Kunyu Mountain, Shandong Province.
网页Summary. The pollen morphology of 24 mostly American genera and about 100 species of Commelinaceae has been studied, with emphasis on the tribe Tradescantieae. The pollen is very variable in size between and, to a limited extent, within genera. With four exceptions, all the species examined have monosulcate pollen.
Comparative Structure and Pollen Production of the Stamens and ...
网页In Commelina erecta, a plant with similar floral structures, Halictus sp., Bombus sp. and Apis mellifera were observed to feed on pollen in the central stamen (McCollum et al., 1984), with their abdomen extending between the two lateral anthers, frequently coming in contact with both the pollen-laden lateral anthers and the stigma.