Rose breeds deterioration?
I hope I won't start a heated debate with this, but I saw this topic on hmf and I wanted some input on this forum.
I was browsing through helpmefind.com, and I saw a mini-discussion about older rose bush varieties. One individual said that he believed that rose bush breeds deteriorate. For example, a Peace bush produced in the 1950s is of a higher quality than a Peace bush produced in the 1980s and so on.
His logic was that the "cloned" rose breeds deteriorate over a series of years in which they were cloned multiple times. Several individuals who believed this cited sheep and other animal cloning as evidence of this practice. The individual also noted that a rose bush produced in 1960s was of a higher quality than the same breed produced now.
Now, that being said...
I find some difficulty accepting this theory. Of course, you cannot compare a 40 year old bush to a 5 year old bush, the older bush is established with a superior root system. As for DNA deterioration, animals cannot reproduce asexually naturally whereas plants can. Grafting a bud onto rootstalk should be no different than if the bud stayed on the original bush, in my opinion.
What are your thoughts?