Rose replant issues?
Sheila z8a Rogue Valley OR
8 years ago
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AquaEyes 7a NJ
8 years agolast modified: 8 years agoSheila z8a Rogue Valley OR thanked AquaEyes 7a NJRelated Discussions
rose replant disease
Comments (11)Concerning the rose family subtopic, the following may be of interest: The following article appeared in the 1960 Canadian Rose Annual pages 69-70. Of interest are the several crosses of roses with other members of the Rosaceae family. For educational use only. This copy was made with a scanner. It is possible that critical errors could have been introduced. Please obtain a copy of the original before utilizing in experiments/articles. Although the crosses at that time were sterile, it is possible that with modern techniques such as chromosone doubling fertile plants could be made. Title: Hybridizing Limitations Author: Roy E. Shepherd, Medina, Ohio "It is somewhat difficult to realize that the Rose family (Rosaceae) contains approximately 100 widely distributed and diversified genera of trees, shrubs and herbs. It includes among others, and in addition to roses, such well known and dissimilar subjects as the Spirea, Blackberry, Raspberry, Plum, Peach, Apple and Strawberry. Modern botanists have attempted to place a few of these in other families or to establish entirely new ones, but their endeavors have not been universally accepted. Plant breeders have also made numerous attempts to cross different genera of the family in the hope that distinct and valuable plants may result, but nothing of great importance has been produced. Improvement within a genus has been accomplished, however, by crossing one member with another and to these endeavors we must credit the great variety of apples, roses, etc., that we grow to-day. There is considerable evidence to support the thought that Nature has created several inter-genera hybrids in the past, but man's accomplishments in this field have been comparatively few. Many persons believe that the nectarine, for example, resulted from a man made cross of the peach and the plum, but it is more probable that it is a sport, or mutation, of the peach as nectarine seeds often produce peach trees and vice versa. Although several members of the Rose family have genital organs of similar anatomy Nature has established certain laws that prevent their inter-breeding. Were it not for these restrictions we might have a conglomerated assortment of freak plant material with little practical or esthetic value. On the other hand, there are many combinations that could give us something worth while if they could be effected. Perhaps, however, we should be satisfied with the rose as we now enjoy it, and not anticipate an apple tree bearing rose blossoms or a rose bush on which the blooms were followed by large luscious peaches. In all seriousness though there is a distinct possibility that science may eventually find means of effecting crosses that have failed previously, and inter-genera crosses within the Rosaceae group may become a reality. They should at least be interesting. The writer has succeeded in budding a rose on to an apple branch and in crossing a rose with a member of the blackberry family, but the bud remained dormant and the seeds did not germinate. Dr. J. H. Nicolas, formerly Research Director for Jackson and Perkins, was more successful as he raised three seedlings of a cross between an apple and a rose. They were similar to the latter in general appearance but showed evidence of apple influence in the bark, foliage, and in the peculiarly colored double apple-like blossoms. The latter, incidentally, were somewhat similar to those produced by Bechtels Crab but not as well formed or as large. The plants were barely remontant and after blooming they were inactive until fall when a second spurt took place. Further experience with Rose x Apple and Rose x Hawthorn crosses gave similar results and all proved to be sterile. They were therefore valueless for use as parents in further breeding along this line. Yes, Nature is quite insistent that man does not make 'hash' of her children, and perhaps we should be content with the beautiful supply of plant material she has given us. The ever-present challenge to create plants that are distinct from all others is so great, and intriguing, that man will probably continue to attempt crosses that now seem almost impossible; and who can say that he will not eventually succeed? Unfortunately plants have a tendency to transmit undesirable characteristics more readily than they do the desirable ones, and these hoped for inter-genera hybrids would probably produce blooms and fruits of inferior quality. Insofar as roses themselves are concerned we still possess considerable unexplored possibilities within the genus. There are 333 somewhat distinct species of roses recorded in Modem Roses V, and but eight of these have contributed to the major types of garden roses. Surely the other 325 have some potential and this should undoubtedly be explored before we spend time on intergenera exploration."...See Moreback on the replant issue - might be a dimwit
Comments (11)There is some evidence that rose roots do give off a growth inhibitor. Title: Growth inhibitor accumulates in the nutrient solution of closed system rose cultivation. Author: Sato, N. Authors affiliation: Shizuoka Agricultural Experiment Station, 678-1 Tomioka, Shizuoka, Iwata, Japan. Published in: Acta Horticulturae (2005), 697(Proceedings of the International Symposium on Soilless Culture and Hydroponics, 2004), pages 511-516. Abstract: "The circulating soln. was collected and analyzed for its nutrient concn. Three types of solns. were prepd. for the bioassay. One was the circulating nutrients soln. Activated charcoal was added to second soln. The third soln. was prepd. to the analyzed formula of nutrients soln. using distd. water. The rooted cuttings of rose were planted in each soln. and incubated in the growth chamber. The rate of change of fresh wt. before and after the incubation was biggest for the prepd. soln., which does not include the circulating soln. The fresh wt. growth rate was smallest for the circulating soln., and the results for the activated charcoal treatment was between them. Since the activated charcoal does not have a sterilization effect, it is possible that the growth inhibitors accumulated in the soln. during the circulating cultivation of roses. " -------------- Another scientific article: http://d.wanfangdata.com.cn/NSTLQK_NSTL_QK3785565.aspx ------------------------ A rose society article: http://www.marinrose.org/replantdisease.html...See MoreRose replant sickness
Comments (11)Well, the rose (Dorothy Perkins, I think) would be fine with a little more attention, but it is such a big, thorny, unwieldy thing that I hate handling it. I thought I'd rather have a thornless thing that I could eat! The raspberry was a wild strain that never produced much anyway. Both were inherited with the garden. I think a more considered planting and some soil improvement would enhance that bit of the garden. My garden's so small I can't really afford to let any of it go to waste! Cajary - David Austen sells a product which claims to build up beneficial fungi around the roots of the plant - mycorrhizae, I think they are called. £2.99 per sachet....See MoreRose replant syndrome - aggrevated by rootstock choice? Laxa?
Comments (3)I notice this a lot and I have 2 roses at the moment that I know just are not being themselves as I moved them during the winter to positions previously occupied by other roses, which don't have to have been in the ground all that long either. A few months is enough to sort of poison it. I have found it takes a full growing season or about 12 months before the new roses revert to how they should be. They grow and bloom somewhat but they show signs of languishing, lacking vigour. The use of M. Fungi helps a lot but I don't always have a supply of it and I'm not going to the woods to dig any up. I replaced 3 more roses recently and used M. Fungi each time, so as of now they are looking alright. It's something I can notice quite soon after planting if it's affected, the rose just cannot be itself despite all the help I can give it. All on Laxa of course....See MoreSheila z8a Rogue Valley OR
8 years agoSheila z8a Rogue Valley OR
8 years agofduk_gw UK zone 3 (US zone 8)
8 years agolast modified: 8 years agoSheila z8a Rogue Valley OR thanked fduk_gw UK zone 3 (US zone 8)mad_gallica (z5 Eastern NY)
8 years agoSheila z8a Rogue Valley OR thanked mad_gallica (z5 Eastern NY)
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