53-08-09 revisited.

I should be writing something substantial, meaningful, educational, but today I'm not in that frame of mind. However, I will share with you today's new photo of my current favorite seedling: 53-08-09 ('Midnight Blue' X L83).

Click on the image for a much larger view.

This is a Kordesii hybrid and as such, it may exhibit both superior Winter hardiness and disease resistance. It's still very young, and only recently transitioned out into the garden, so these aspects of its nature are yet to be determined. In the meantime, I am going to admire its wonderful color (no photo I take does its hue justice: it is a much richer, more vibrant purple/magenta than it appears here) I have learned that it is remarkably easy to propagate as well, something many modern roses sorely lack.

77-07-12: update.

I have been so busy trying to keep up with the hundreds of tasks that all have to be done in May and June and regrettably, blog posts often get dropped from my "to do" list. Tonight, however, I will make an effort.

This is one of about six selections I have now culled down to from the cross made in 2007 of ('Penny Ante' X 'Tradescant') X L83. The seed parent is a proprietary hybrid of mine that I often use for breeding to get both good color and vigor into my work. It turns out to have been an excellent choice with which to mate L83, the AgCan Kordesii breeder.

Seedling #77-07-12 is my favorite of this group, with its heavy, dark glossy foliage and the 4" double red and purple blooms, reminiscent of a slightly less double 'Charles de Mills'. It has a modest "modern rose" fragrance that is neither strong nor remarkable, but pleasant just the same. The foliage has so far been completely immune to Blackspot, whereas other seedlings immediately next to it have lost 80% or more of their foliage to the disease. While I am considering this as a "finished" variety (IE: headed for market) I am also working on proceeding with it as a breeder, crossing it with its siblings and one of the yellow L83 hybrids, the idea being to improve further on the excellent disease resistance of these L83 seedlings.

Westerland shows promise as a breeder.

I'm beginning to wonder why Kordes' 'Westerland' hasn't been used much in breeding. I can say that my own experience demonstrates that it makes some very decent offspring, so maybe its just a style thing? It appears to be inclined to make large, climber-ish shrubs, and for the most part, large roses are not currently in vogue, so maybe that is part of it.

Anyway, lets look at this example. This is 'Westerland' X 'A Shropshire Lad', the latter being one of the more recent Austin roses, which, like 'Westerland' is a large shrub that can be trained as a "climber". (I put that in double quotes because, like so many similar modern shrubs of a certain stature, this rose is often referred to as a "climber" when in fact it is nothing at all like the true climbers: the Ramblers, Hybrid Multifloras and others bred from true climbing species. Of course, it can be argued that no rose is a climber in the true sense, as they have no tendrils or tools to grasp with. They are simply "opportunistic climbers", relying on chance that their prickles will latch onto something supporting as they grow towards the light.)

I saved this seedling at the last moment, only because it had such excellent foliage and a glimmer of pleasant color. I almost culled it because in the first two seasons the blooms were less full than I would have liked. This Spring, however, the blooms are reasonably full and quite attractive. (Certainly more petals than previously) It is showing excellent vigor as well, and appears to have excellent resistance to disease (so far). The fully expanded bloom shown here is about 4" in diameter. Larger canes are blooming in clusters of three to five, while laterals often have only one or two. Half open buds are yellow brushed heavily with flame, expanding to more of a "Peace yellow" with splashes of pink and red at the petal edges. Yes, it has a pleasant scent, though not intense. I'll be watching this one more closely now, I think ;-)

So, in case you were considering using 'Westerland' as a breeder, I would say yes, go ahead and see what it can do for you. It might not do exactly what you want, but I believe it is worth exploring.

More from L83: 37-07-03

The seedling pictured here comes from a cross of Ralph Moore's yellow breeder 1-72-1 X L83, the AgCan tetraploid Kordesii breeder. The idea here, of course, was to work towards yellow in the Winter hardy, Blackspot resistance line. This is as close as any of this group has come to yellow, and it is peachy pink with a yellow center at best, but I think it represents a step towards better things. As 1-72-1 is a tetraploid yellow miniature climber, the likelihood is that all of this group are tetraploids also, and therefore fertile with any luck. The first thing I will do is allow these seedlings to self and see if seeds result. Then next year, if the open pollinated seeds germinate, I will make some intentional crosses, probably mating this with other peachy seedlings from the same cross. (There is one other so far and many still to bloom) I will undoubtedly mate this with the 'Golden Angel' X 'John Davis seedling mentioned a few days ago.

Bracteata line breeding.

It seems to me that line breeding is rarely pursued in the breeding of roses. In part, I expect this is because undesirable recessives start to show up and loss of hybrid vigor becomes an issue as well. Still, many of the Canadian Explorer roses rely heavily on line breeding, making extensive use of the 'Red Dawn' X 'Suzanne' line and the 'Kordesii' line, and with great success.

Well, I have been working with the Moore line of Hybrid Bracteatas for several years now and it has become very clear that the biggest battle with these is getting decent color out of them. Ralph Moore's most attractive hybrid of the group (for me) is 'Out of Yesteryear', whose parentage is 'Sequoia Gold' X 'Muriel'. 'Muriel' is Moore's first successful cross using R. bracteata (crossed with 'Guinee') that was fully fertile and able to carry forward the line. 'Muriel' is a tetraploid, as is 'Sequoia Gold', but when these two were crossed, 'Out of Yesteryear' resulted and it turned out to be a triploid! How two tetraploids mated to produce a triploid is a bit of a mystery, but there you have it. Even more interesting, 'Out of Yesteryear' is a fully fertile triploid, contrary to the mytholgy of triploids being infertile. You can use its pollen on pretty much anything and get loads of seedlings from it.

I've done plenty of crosses with 'Out of Yesteryear' over the years and there are some excellent traits it passes on, and some not so great ones. Its offsrping tend to have excellent vigor, beautiful foliage and often very beautiful blooms packed with petals. Many are often fragrant as well. However, seedlings can be very thorny, the petal texture too thin and rarely do you get anything with strong coloring. Many seedlings are just white. So when I get a seedling that has decent color, I'm inclined to explore it as a stepping stone towards Bracteata hybrids with good color, which leads me to these two.

174-02-17 = 'Sheri Anne' X 'Out of Yesteryear'. One of its siblings tested as a tetraploid and I suspect this is also. It is a thorny plant that is more horizontal than vertical, with smallish glossy foliage. It blooms at many nodes along the previous season's canes and can bloom in large clusters sometimes. Blooms have a vaguely HT shape when in bud (see photo) but open to a flat 2.5 inch shape. Color is a medium red in bud, fading to a pale red/pink. It sets seed with most any pollen, but seed fertility is low at about 10-20%. However, when it does produce seedlings, a high percentage of them has something about them that warrants further evaluation. Offspring tend to bloom in big clusters with compact, graceful architecture and good color. One of my favorite new shrubs came from a cross of 174-02-17 X 'Hot Cocoa'. (More about this soon)

33-03-03 = 'Twilight Skies' X 'Muriel'. Why, you might ask, did I select the mauve miniature 'Twilight Skies' as the parent for this cross? Because it was there! I had grown it for two years when it was new and it set seed readily, bloomed like mad, so I thought why not? It was untested and might have qualities that would make it worthwhile as a parent. The seedlings from this group were mostly lavender/pinks with one coral colored one in the mix. Several were grown for two years and all but 33-03-03 were discarded for poor vigor or unattractive blooms. 33-03-03 is a semi-climbing plant with dark green glossy foliage and 2.5" medium red blooms that fade to a reddish pink with age, about 25 petals, cupped in form. It blooms in clusters all along the arching canes, repeating in flushes through the year. David Zlesak kindly did ploidy tests on some of my Bracteata seedlings for an article we were co-authoring*, a few years back and it turns out that 33-03-03 is a tetraploid. It is fertile in both directions and should be compatible with most other tetraploids.

174-02-17 and 33-03-03 happen to be growing side by side in one of the greenhouses, both descended from R. bracteata through 'Muriel', and both were selected for their relatively strong coloring. Yet it never occurred to me to cross the two together....until now. The idea (and hope) here is that some of the more interesting Bracteata traits might be reenforced while retaining the vigor, repeat blooming habit and red coloring of each. Anything could happen of course. I might end up with a load of diseased seedlings with no vigor and no rebloom. Its possible the seeds might not even germinate, assuming I get seeds at all! We shall see.

*See: Bracteata Gene Counts Article