pollination

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Related to pollinations: Cross pollination

pollination

the transfer of pollen from male to female reproductive organs in higher plants, for example, microsporangium to ovule in GYMNOSPERMS, and anther to stigma in ANGIOSPERMS. In flowering plants the flowers show a strong link between structure and the method of pollination (see ANEMOPHILY, ENTOMOPHILY).

Many angiosperms carry out CROSS-POLLINATION. Some of these types, such as brassicas, have SELF-INCOMPATIBILITY systems to prevent self-pollination. Self-pollination, however, is common in certain plants, such as groundsel or chickweed.

References in periodicals archive ?
The present study investigated the impact of drought stress (control and drought) around pollination and foliar sprays of potassium (K; 0, 1, 2 and 5% K2SO4) on leaf K concentrations and yield determinants of maize under greenhouse and field conditions.
Successive self-pollinations are able to generate self-fertilization probably because the first self-pollination neutralizes glycoproteins, so that subsequent pollinations may generate pollen tubes capable of fertilizing the embryo sac.
These floristic characters are thought to be the result of selection for efficient attraction of and pollination by a particular functional group of pollinators (Faegri and van der Pijl, 1979; Fenster et al, 2004).
Pollinations restricted with paper and with tulle produced fruits with heavier seeds and a larger amount of seeds in the fruit (Table 3).
In controlled pollinations involving banana and plantain, FORTESCUE & TURNER (2005c) reported that seed production was low, in the order of 1 to 5 seeds per 100 fruits, considering that each ovary could contain at least 300 ovules.
Fifty mature buds, five each from ten inflorescences on five trees were bagged a day before anthesis without manual self pollination to know whether fruit set occurs through autogamy.
Longevity of flowers may be influenced by timing of pollination, mating system, and growth form (Devlin and Stephenson, 1984; primack, 1985; stratton, 1989; schoen and Ashman, 1995; clayton and Aizen, 1996).
In 1993, kernel set declined for pollinations between 4 and 8 DAFS for WF9 x A632, after 8 DAFS for 3343, while B73 x MO17 and 3379 again maintained maximum kernel set at 10 DAFS (Fig.
Nonetheless, individual pollen loads are usually below levels that provide higher probability of retention, and commonly observed geitonogamous pollinations also appear to conflict with expected strong selection on moths to provide pollinations that give high retention probability.
Gymnosperm pollination drops are involved at some point in the capture and delivery of pollen into ovules, followed by pollen germination and fertilization (Gelbart & von Aderkas, 2002).
Especially, the germination of grape seeds obtained from self pollinations are usually lower than those from open or cross pollinations (Doijode, 2001).