Self-Fertilization

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Self-Fertilization

 

the merging of male and female sex cells belonging to a single bisexual individual (see HERMAPHRODITISM). Self-fertilization is rarely observed in nature. In the process of evolution, most organisms acquired adaptations that made self-fertilization impossible and ensured cross-fertilization. These adaptations increased the genetic variation of the off spring, promoting, in turn, the elaboration of new adaptations and the development of more viable offspring. Self-fertilization is sometimes observed in hydras, flatworms, certain annelids, mollusks, and fishes. Among plants it is observed in many algae, fungi, and flowering plants. In flowering plants self-fertilization is a result of self-pollination.

References in periodicals archive ?
Because self-fertile immature oocytes become self-sterile spontaneously by 3 h after germinal vesicle breakdown in vivo as well as in vitro, we allowed animals one week to accumulate mature gametes, followed by natural spawning instead of dissection to avoid contamination of immature oocytes.
Greenhouse Produce self-fertile Beit Alpha MR' (OP) 52 to 65 days to flowers, which do not 'Cool Breeze' (F1) maturity require pollination by 'Diva' (F1) insects.
The segregation rate of the three seed colors in LBGMF lines was determined by counting the percentage of white and blue seeds in all seeds from 20 self-fertilized plants sampled from the plot, then counting the percentage of self-fertile plants that were homozygous for deep blue grains in all blue grain plants of the LBGMF plot, and finally calculating the segregation rate of the three seed colors in self-fertile LBGMF lines.
Adeniums, however, are not self-fertile, and cross-pollination between plants is required if they are to produce seed.
Although it's self-fertile and so can be grown alone, 'Sharpblue' does better when cross-pollinated with other southern highbush varieties such as 'Sunshineblue'.
Choose a hardy variety such as the self-fertile Pinot Noir.
Temptation' is a recently introduced self-fertile cultivar of this popular shrub.
Most gardens should be able to accommodate one apple tree, ideally two because no apple is completely self-fertile.
Walnuts may not be the easiest things to grow in our climate - and indeed, the walnut tree originates from Persia - but new self-fertile varieties are proving more successful in this country.
The self-fertile plants will grow in most soils and can yield up to 4.
While cherry trees were massive and would have taken over the garden, today you can buy self-fertile smaller varieties - some of which only grow to around 1.
Many newer varieties such as Scrumptious are self-fertile and will produce apples with only one tree.