Thesis- “Characterisation and genetic improvement in Rose(Rosa spp.) through mutagenesis”

A meeting place for rose breeders.

Karl K
Posts: 1275
Joined: Sat Jun 02, 2012 4:49 pm
Contact:

Re: Thesis- “Characterisation and genetic improvement in Rose(Rosa spp.) through mutagenesis”

Post: # 70802Post Karl K
Wed Jan 01, 2020 12:46 pm

As I recall, I first read about mutations in the Golden Book Encyclopedia when I was in 2nd grade. I was fascinated! Over the years I read what I could find, including the suggestion that the glow-in-the-dark paint on old radium-dial watches could induce mutations. It's just as well that I never found any old watches.

But I could dream. This one kept me going for a while, and I still wonder about marigolds that had blossoms "half yellow and half blue".
Miller: These seeds have been A-bombed (1960)
http://bulbnrose.x10.mx/Heredity/Abomb/Abomb.html

I also learned that even vegetable oils can induce mutations. They are far and away safer than Radium, X-rays, Cobalt-60, colchicine and whatnot. It took me a lot of years to remember what I had read, and to track down the research.
Singleton: Vegetable oils as mutagens (1962)
http://bulbnrose.x10.mx/Heredity/Single ... s1962.html

Dr. Lammerts also did a bit of experimenting with roses.
Lammerts: Induced Mutations (1961)
http://bulbnrose.x10.mx/Roses/breeding/ ... s1961.html

It is disconcerting to read Lammerts' off-hand rejection of evolution. He even asserted that the mere "concept of evolution has had a bad influence on research". He implied that evolutionists were blinded by a theory, which tainted all their research.

Lammerts, of course, imagined himself to be free from bias ... and helped found the creation "science" movement to prove his objectivity. /s

Karl K
Posts: 1275
Joined: Sat Jun 02, 2012 4:49 pm
Contact:

Re: Thesis- “Characterisation and genetic improvement in Rose(Rosa spp.) through mutagenesis”

Post: # 70819Post Karl K
Sat Jan 04, 2020 11:13 am

Furthermore:
In 1931, McClintock studied X-ray induced "mutations" in maize. She reported her tesults in her paper, Cytological observations of deficiencies involving known genes, translocations and an inversion in Zea mays. Missouri Agr. Exp. Sta. Res. Bull. 163, l-30 (1931).
https://mospace.umsystem.edu/xmlui/handle/10355/52974

In her 1983 Nobel Lecture, she summarized briefly, "None of the recessive phenotypes in the examined plants arose from 'gene mutation'. Each reflected loss of a segment of a chromosome that carried the wild-type allele, and X-rays were responsible for inducing these deficiencies."
https://www.nobelprize.org/search/?s=McClintock

In other words, Lammerts' comments on "mutations" were 30 years out of date when he made them.

Post Reply

Who is online

Users browsing this forum: Google [Bot] and 3 guests