Cerinthe major v. purpurascens
- To: "propagation-list" <propagation@mallorn.com>
- Subject: Cerinthe major v. purpurascens
- From: "* M* O* <p*@mbox305.swipnet.se>
- Date: Thu, 8 Apr 1999 22:21:13 +0200
I have a question concerning seeds of Cerinthe major v. purpurascens which I have sown:
990405:10 seeds
and germination has been as follows:
990406:3
990408:4
The seeds have been sown at approx. 20C, and the seeds were treated with 500ppm GA-3 solution for 10.25 hrs
2 of the seeds which have germinated have had two radicles coming out of the seed coat. They seem independent, but might merge together within the seed. I have shifted the germinated seeds to soil mix, and it will be interesting to see if there will also be two pair of cotyledons on the seeds with two radicles. Could this phenomenon be caused by the
GA-3 treatment ? It would be interesting to hear if anyone else has had similar experiences with this species. I have germinated a lot of seeds but I have never before seen two radicles come out of what clearly is just one single seed.
Norman C. Deno Has made the following obsertvations concerning Cerinthe major in the 2nd Supplement to Seed Germination Theory and Practice:
" ...Seeds germ. 70GA-3( 100% in 2nd w ), 70L ( 3/7 in 2nd w ) L being Light (my comment ), and 70D ( 5/12 in 2nd w ). D being Dark ( my comment ). The promoting effect of GA-3 is real because when the sample in 70Lwas shifted to 70GA-3 after 3 m , 3 of the remaining 4 germ. in 3-9 d, and a sample subjected to 40-70D treatment failed to germinate a single seed but when treated with GA-3, 80 % germ. in 2 - 4 w. "
The seeds have been dry stored at room temperature until sown, and I wonder if the quick germination 7/10 in 3 days whereas Deno's seeds didn't start until the 2nd week.Could there be such a difference because this is a variety of C. major ? I don't know what GA-3 concentration Deno has used on his seeds, but I think he has used 1000ppm in most of his experiments. Could less sometimes maybe give better results ?
I hope that the seedlings will bevelop normally without going "bakanae" ( get etiolated ).
I hope someone can share some of their knowledge with me. Sincerely,
Paul
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