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Re: Hybridizing Question Please

  • Subject: Re: [iris-photos] Hybridizing Question Please
  • From: "Linda Hunt" nakihee@gmail.com
  • Date: Sun, 30 Apr 2006 21:35:58 -0500

Thanks much Betty!  Exactly what I was searching for.
Can you give me the author of this book?  Thanks Linda
In a message dated 4/30/2006 5:33:54 P.M. Central Standard Time, nakihee@gmail.com writes:
<<If you combine the pollen from 2 parent plants onto the stigmatic lip of one bud, do both affect the pollination or does only one little individual piece of pollen actually cause the seed pod? >>
One grain of pollen per seed, not per pod.  In the case you mention, pollen from both parents could contribute to seed within the same pod.  You could have some children from each pollen parent.  But the parents would be unknown since you have no way of knowing which one was the parent of a given seedling. 
Page 327 of The World of Iris . . . Seed formation.  Quote: "During the first few hours after pollination, the pollen grains that were placed on the stigma send out tiny tubes which grow down through the style into the ovary and then into the ovules or embryonic seeds.  Within the pollen tube are two male nuclei.  One unites with an egg cell in the ovule to become the embryonic plant.  The other unites with an endosperm nucleus in the ovule to form the endosperm of the seed.  For every viable iris seed, this double fertilization must take place---one to produce the tiny plant . . . . . For every seed produced in the pod, at least one acceptable, viable pollen grain must be placed on the stigma. 
If you don't cross them, you can't  plant them! 
Betty W. in South-central KY Zone 6 ---
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