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Re: Hormones

In a message dated 97-08-21 08:41:42 EDT, wneily@admin.oldscollege.ab.ca
(Will Neily) writes:

<< Subj:	Re: Hormones
 Date:	97-08-21 08:41:42 EDT
 From:	wneily@admin.oldscollege.ab.ca (Will Neily)
 To:	collinsr@execpc.com (Richard J. Noffke)
 CC:	pumpkins@athenet.net
 
 Richard:
 
 I have experience with one growth regulator that helps to improve the 
 germination rate of older cucurbit seed. GA3 (gibberellic acid) marketly 
 improved the germination rate of some squash seed from a 480 sqecimen 
 that I grew in '88. I had tremendous success with this seed, growing 
 several specimens over 600 lbs and one over 700. In 1994, I noticed a 
 considerable decline in germination rate. I had just recently read a 
 research article on the improved germination of bedding plant seed which 
 were soaked in a solution of 200ppm of GA3. After not having 0 success in 
 germinating this older squash seed, I soaked 12 in a solution of 
 gibberellic acid for 24 hrs. I had 100% germination and one of these 
 plants further went on to produce a 743 pounder that same year. 
      The research article suggested that the available active GA in seed 
 declines with age. By exposing the old seed to exogenous GA, the internal 
 GA levels are enhanced to allow germination to occur.
 
 Will Neily
 Horticulture Instructor
 Olds College, AB
 
  >>
I have had increased seed germination by freezing, I have been using this
method for 15 years.  What is it doing to the seed to improve germination?

George Brooks
N. Tewksbury, MA USA
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