pollen grain host:www.passionflow.co.uk

Listing 1 - 5 from 5 for pollen grain

Hybridizing
... , which produce pollen, & female stigmas, which receive it. The pollen sends out a tube which travels down from the stigma through the style to the ovary. Sperm within the pollen grain makes its way ... contain viable & genetically variable seed. For further information on this very complex process see the Pollen section of the site. Naming If germination is successful, hybrids that we produce are by ...
www.passionflow.co.uk

Pollen abnormalities
... Novon 14), Passiflora subfertilis, mentioned hybridization/ pollen fertility and used that lactophenol-cotton blue test for pollen viability. Most of the work, by far, with hybrid pollen has been done with the ... The development of the grain wall is an interplay of the mother and the baby, mostly the baby, so probably this "hybrid-distortion" provides clues to how the pollen grain wall actually ...
www.passionflow.co.uk

Passiflora pollen adhesion
... pollen grain-the exine-and the stigma cell occurs. After binding, the stigma cell causes the pollen grain to absorb water, enabling it to send a pollen tube down through the female tissue to the flower's ovary. Sperm carried inside the pollen grain ... the pollen grain reside within the exine itself, or even the cell wall of the pollen grain, ...
www.passionflow.co.uk

Passiflora pollen adhesion cont.
... stigma and style of the receiving plant and the pollen and pollen tubes of the pollen-donor plant. Additionally, recent studies have shown the ... own pollen in such a way as to go from initiating the binding process right through to the sperm within the pollen grain making its way down the tube and fertilizing eggs within the ovary. Which pollen the flowers respond ...
www.passionflow.co.uk

Passiflora self pollination
... pollen adhesion, explaining how the plant selects the pollen it wants from whatever is deposited on the flower's stigma. The physical shape of the grain against the stigma producing a tight fit may be relevant. There is also the widely observed phenomenon whereby foreign Passiflora pollen ... the pollen grain so perhaps the osmotic pressure is reduced by binding or is used to explode the pollen ...
www.passionflow.co.uk