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#1
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Variegated Hop Question
I have an old male Hop (Humulus Lupulus) from which late in the
season has budded out a variegated shoot (direct from rhizome). The first two pictures are of a rooted cutting of the shoot. The third picture is another cutting taken later from that cutting which I took because of the strange mosaic variegation and odd leaf shape on this bine (note that only five variegated leaves are showing in this image as other leaves are from older 'normal' hops growing in the same area.) Both of these plants are now about 1M height (they will soon die back for winter here in Australia) and will produce small rhizomes. When I grow them both up to maturity next year and use the pollen to fertilise some of my Hop cultivars, Goldings, Tettnanger, etc. Will they transfer this trait to a few of the seeds? 1 http://tinyurl.com/2ek3lg 2 http://tinyurl.com/2u86jb 3 http://tinyurl.com/2jwx3k Was hoping to produce a variegated ornamental female hop Rupert. |
#2
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Variegated Hop Question
In message
, Rupert Bear writes I have an old male Hop (Humulus Lupulus) from which late in the season has budded out a variegated shoot (direct from rhizome). The first two pictures are of a rooted cutting of the shoot. The third picture is another cutting taken later from that cutting which I took because of the strange mosaic variegation and odd leaf shape on this bine (note that only five variegated leaves are showing in this image as other leaves are from older 'normal' hops growing in the same area.) Both of these plants are now about 1M height (they will soon die back for winter here in Australia) and will produce small rhizomes. When I grow them both up to maturity next year and use the pollen to fertilise some of my Hop cultivars, Goldings, Tettnanger, etc. Will they transfer this trait to a few of the seeds? 1 http://tinyurl.com/2ek3lg 2 http://tinyurl.com/2u86jb 3 http://tinyurl.com/2jwx3k Was hoping to produce a variegated ornamental female hop Rupert. Variegated plants are often chimaeras. If this is the case the variegation won't pass through the pollen. (Depending on which genotype contributes to the pollen you may pass the trait for the variant leaf colour onto seedlings; this may well be recessive, but could be made homozygous by backcrossing to the variegated plant. (Any homozygous plant may be weak due to low/absent chlorophyll.) But the above is not always the case. You can but try. -- Stewart Robert Hinsley |
#3
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Variegated Hop Question
"Stewart Robert Hinsley" wrote in message ... In message , Rupert Bear writes I have an old male Hop (Humulus Lupulus) from which late in the season has budded out a variegated shoot (direct from rhizome). The first two pictures are of a rooted cutting of the shoot. The third picture is another cutting taken later from that cutting which I took because of the strange mosaic variegation and odd leaf shape on this bine (note that only five variegated leaves are showing in this image as other leaves are from older 'normal' hops growing in the same area.) Both of these plants are now about 1M height (they will soon die back for winter here in Australia) and will produce small rhizomes. When I grow them both up to maturity next year and use the pollen to fertilise some of my Hop cultivars, Goldings, Tettnanger, etc. Will they transfer this trait to a few of the seeds? 1 http://tinyurl.com/2ek3lg 2 http://tinyurl.com/2u86jb 3 http://tinyurl.com/2jwx3k Was hoping to produce a variegated ornamental female hop Rupert. Variegated plants are often chimaeras. If this is the case the variegation won't pass through the pollen. (Depending on which genotype contributes to the pollen you may pass the trait for the variant leaf colour onto seedlings; this may well be recessive, but could be made homozygous by backcrossing to the variegated plant. (Any homozygous plant may be weak due to low/absent chlorophyll.) But the above is not always the case. You can but try. -- Stewart Robert Hinsley "Stewart Robert Hinsley" wrote in message news In message , Rupert Bear writes (Oops sorry for posting this in the "What is this nut tree?" thread) I have an old male Hop (Humulus Lupulus) from which late in the season has budded out a variegated shoot (direct from rhizome). The first two pictures are of a rooted cutting of the shoot. The third picture is another cutting taken later from that cutting which I took because of the strange mosaic variegation and odd leaf shape on this bine (note that only five variegated leaves are showing in this image as other leaves are from older 'normal' hops growing in the same area.) Both of these plants are now about 1M height (they will soon die back for winter) and will produce small rhizomes. When I grow them both up to maturity next year and use the pollen to fertilise some of my Hop cultivars, Goldings, Tettnanger, etc. Will they transfer this trait to some of the seeds? 1 http://tinyurl.com/2ek3lg 2 http://tinyurl.com/2u86jb 3 http://tinyurl.com/2jwx3k Was hoping to produce a variegated ornamental female hop Rupert. Variegated plants are often chimaeras. If this is the case the variegation won't pass through the pollen. (Depending on which genotype contributes to the pollen you may pass the trait for the variant leaf colour onto seedlings; this may well be recessive, but could be made homozygous by backcrossing to the variegated plant. (Any homozygous plant may be weak due to low/absent chlorophyll.) But the above is not always the case. You can but try. -- Stewart Robert Hinsley Thanks for that information Stewart, its good to know it's not a total impossibility. It will be fun to try out next season. Rupert. |
#4
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Variegated Hop Question
In article ,
Stewart Robert Hinsley wrote: In message , Rupert Bear writes I have an old male Hop (Humulus Lupulus) from which late in the season has budded out a variegated shoot (direct from rhizome). The first two pictures are of a rooted cutting of the shoot. The third picture is another cutting taken later from that cutting which I took because of the strange mosaic variegation and odd leaf shape on this bine (note that only five variegated leaves are showing in this image as other leaves are from older 'normal' hops growing in the same area.) Both of these plants are now about 1M height (they will soon die back for winter here in Australia) and will produce small rhizomes. When I grow them both up to maturity next year and use the pollen to fertilise some of my Hop cultivars, Goldings, Tettnanger, etc. Will they transfer this trait to a few of the seeds? 1 http://tinyurl.com/2ek3lg 2 http://tinyurl.com/2u86jb 3 http://tinyurl.com/2jwx3k Was hoping to produce a variegated ornamental female hop Variegated plants are often chimaeras. If this is the case the variegation won't pass through the pollen. (Depending on which genotype contributes to the pollen you may pass the trait for the variant leaf colour onto seedlings; this may well be recessive, but could be made homozygous by backcrossing to the variegated plant. (Any homozygous plant may be weak due to low/absent chlorophyll.) But the above is not always the case. You can but try. Variegation can also be caused by certain viral infections, so you might want to try infecting a female plant, ideally not one of your stock plants! I'm not sure of the best way to do this, but crushing a variegated leaf, and smearing the juice on wounds on the victim might work. Another method would be to graft material from the variegated plant to a female plant and see if the variegation spreads to the female. Once virus-testing became effective, it was found that many commercial cultivars of common vegetatively propagated trees and other plants were heavily infested with viruses. In some cases, dwarf cultivars grew to normal size once they were freed of viruses by tissue culture methods, but in others the plant only became somewhat more productive. So although chronic viral infection sounds horrible, it may not be a problem for ornamental plants, although if you're in a commercial hop-growing region, your neighbours may beg to differ with this opinion. Viruses are commonly spread by aphids and other sucking insects. Have fun and good luck. I once tried to propagate variegated red onions from a stripe-leaved plant that appeared spontaneously, but it went to 100% white tissue and died before I got anywhere. I suspect it was a virus infection. |
#5
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Variegated Hop Question
wrote in message ... In article , Stewart Robert Hinsley wrote: In message , Rupert Bear writes I have an old male Hop (Humulus Lupulus) from which late in the season has budded out a variegated shoot (direct from rhizome). The first two pictures are of a rooted cutting of the shoot. The third picture is another cutting taken later from that cutting which I took because of the strange mosaic variegation and odd leaf shape on this bine (note that only five variegated leaves are showing in this image as other leaves are from older 'normal' hops growing in the same area.) Both of these plants are now about 1M height (they will soon die back for winter here in Australia) and will produce small rhizomes. When I grow them both up to maturity next year and use the pollen to fertilise some of my Hop cultivars, Goldings, Tettnanger, etc. Will they transfer this trait to a few of the seeds? 1 http://tinyurl.com/2ek3lg 2 http://tinyurl.com/2u86jb 3 http://tinyurl.com/2jwx3k Was hoping to produce a variegated ornamental female hop Variegated plants are often chimaeras. If this is the case the variegation won't pass through the pollen. (Depending on which genotype contributes to the pollen you may pass the trait for the variant leaf colour onto seedlings; this may well be recessive, but could be made homozygous by backcrossing to the variegated plant. (Any homozygous plant may be weak due to low/absent chlorophyll.) But the above is not always the case. You can but try. Variegation can also be caused by certain viral infections, so you might want to try infecting a female plant, ideally not one of your stock plants! I'm not sure of the best way to do this, but crushing a variegated leaf, and smearing the juice on wounds on the victim might work. Another method would be to graft material from the variegated plant to a female plant and see if the variegation spreads to the female. Once virus-testing became effective, it was found that many commercial cultivars of common vegetatively propagated trees and other plants were heavily infested with viruses. In some cases, dwarf cultivars grew to normal size once they were freed of viruses by tissue culture methods, but in others the plant only became somewhat more productive. So although chronic viral infection sounds horrible, it may not be a problem for ornamental plants, although if you're in a commercial hop-growing region, your neighbours may beg to differ with this opinion. Viruses are commonly spread by aphids and other sucking insects. Have fun and good luck. I once tried to propagate variegated red onions from a stripe-leaved plant that appeared spontaneously, but it went to 100% white tissue and died before I got anywhere. I suspect it was a virus infection. Thank you, that's very interesting information, I will definitely try both of these methods to 'infect' one of my hop cultivars, will have to patiently wait around to December to do this as the hops have stopped growing now and will soon start dying back. It will be easy to cut a couple of pieces of rhizome from one of my stock plants to try these methods you have suggested. If this works I will have to remember to say "look at my variegated ornamental dwarf hop" and not "...my chronically viral infected stunted hop Luckily there are no commercial hop growers in the region! Will try sowing seeds as well, so might be able to come up with something ...it will definitely be fun Once again, thank you for taking the time to answer my question. Rupert. |
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