Morning Glories: Vines, observations, and questions!, 1 by RON_CONVOLVULACEAE
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In reply to: Vines, observations, and questions!
Forum: Morning Glories
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RON_CONVOLVULACEAE wrote: Yes,that's accurate except that in Convolvulaceae the double fertilization occurs differently in that each pollen grain carries 2 sperm cells 1 sperm cell fertlizes what will become the embryo 1 sperm cell fertilizes the material which will become the seedcoat Pollen tubes in Convolvulaceae usually take from 20 minutes to several hours to reach the ovary area... Here's few links to threads where I shared on this aspect previously http://davesgarden.com/community/forums/p.php?pid=1847785 http://davesgarden.com/community/forums/p.php?pid=1915552 http://davesgarden.com/community/forums/p.php?pid=2032974 http://davesgarden.com/community/forums/p.php?pid=1758253 http://davesgarden.com/community/forums/p.php?pid=1758362 http://davesgarden.com/community/forums/p.php?pid=3262975 http://davesgarden.com/community/forums/p.php?pid=2606433 photo in my reference files of Ipomoea pollen on stigma sprouting pollen tubes TTY,... Ron This message was edited Sep 19, 2007 12:38 AM |