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CHROMOSOMES: Variation in Numbers

Orchid Doctor Propagation

by Robert M. Hamilton (Compiler)

Originally published in The Orchid Doctor in 1980 and 1988

Posted by Sys Admin about 2 years ago.

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A review; change and polyploidy; polyploidy and improvements in plants, other information, refer to OR81-169; OR82-368; OR87-139
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Chromosomes Comments
CHROMOSOME NUMBERS: Dendrobiums At Kew 62 species recently acquired from Papua-New Guinea; refer to the list, A85-1122; for miscellaneous species, refer to A85-1235 0
CHROMOSOME NUMBERS: For Bulbophyllums 55 species at Kew listed with origin and 2n. A85-190 0
CHROMOSOME NUMBERS: For Phragmipedium Hybrids Diploidy and polyploidy. A83-933 0
CHROMOSOME NUMBERS: For Species and Hybrids For a most comprehensive listing, refer to OBIII-323 0
CHROMOSOME NUMBERS: Importance They are significant for cymbidiums, but not for others such as paphiopedilums, for breeding purposes. OA78-17 0
CHROMOSOMES: Changes in 1987 A review of recent events and efforts to conserve wild orchids; improvements in the face of rapacious exploitation suggested, refer to A88-31 0
CHROMOSOMES: Failure The Convention qualifies as the biggest fraud as applied to plants since Prohibition in the U.S.; it has probably killed more plants than it has saved; originally written for protection of animals, it does not work well for plants as it ignores the more dangerous problem of habitat destruction. OIE87Jy-6 0
CHROMOSOMES: Is it Effective? The greatest threats are Japan, Belgium and Holland which have not signed the treaty; until they ratify it they will remain the worst importers of wild species. OA86-64 0
CHROMOSOMES: Pros and Cons An argument against its policies or provisions and stating the program needs to be re-evaluated; refer to A88-30 0
New Topics
  1. Milena Radeva asked question Orchid name in category Phalaenopsis
  2. Gilda Gómez asked question Dendrobium loddigesii in category General Discussion
  3. Edward Zapata asked question Selfing Question on Pollinating. in category General Discussion
  4. Edward Zapata asked question Name of Cymbidium? in category General Discussion
  5. Paph hsinying jewel x paph hsying jewel september 09 2018 Adrienne Alexander asked question Can Zygopetalum (genus) be added to the look-up? in category General Discussion
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  1. giuseppe di ciommo commented on scheduled event "Southern Ontario Orchid Society Orchid Show & Sale" by Southern Ontario Orchid Society
  2. Gilda Gómez commented on topic "Dendrobium loddigesii" by Gilda Gómez
  3. Gilda Gómez commented on topic "How to add a not-listed plant" by Adrienne Alexander
  4. John Vernam commented on orchid Den. Little Andree
  5. Image Carol Holdren commented on member plant Rlc. Prada Green Deluxe by Mary Lane
  6. Edward Zapata commented on topic "Selfing Question on Pollinating. " by Edward Zapata
  7. Edward Zapata commented on orchid Wils. Tropic Breeze
  8. Edward Zapata commented on topic "Some advice please" by Pieter Opperman
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