The Orchid Doctor Articles under the Heading Tetraploids

Tetraploids Comments
TETRAPLOIDS: Chance, in Cymbidiums A prolific source of these has been through the mass tissue culture process of recent years which has produced many sports. A78-1022; thousands of them are a complete failure as parents. AU79-139 0
TETRAPLOIDS: Converted, in Cymbidiums In 1966 Donald Wimber presented a paper on the conversion of diploids into tetraploids by use of colchicine; many plants are now available. A78-1022; refer to AU80-109+They never revert to the diploid. OA75-214 0
TETRAPLOIDS: Cymbidiums A comparison with diploids: the tetraploid flower is bigger, the petals and sepals wider, so is the column; the shape is improved; the tissue of all parts is thicker and color is thereby intensified; better reflection of light results from heavier substance; spikes and stems are heavier and stronger; flowers have longer life on or off the stem, with or without water; they suffer less damage from handling and shipping. OA78-23 0
TETRAPLOIDS: In Cymbidiums "4n's" have advantages and disadvantages for the orchid world; the colchicine-converted ones have caused a lot of confusion in the orchid world; refer to OR81-169They are the heaviest producers of long spikes of large blooms on quick-growing strong plants; flowers become thicker in tissue, with wider petals including lip and column; an illusion of greater size; racemes shorter and fatter cause a less attractive arrangement of flowers on them; fewer flowers per spike. OA79-8 0
TETRAPLOIDS: Meaning A clone in which the chromosome count is four times the haploid or standard number; generally indicated by 4n. AU78-47 0

New Topics

  1. Judith Pariseau asked question Paphiopedilum culture differences in category Paph Alliance
  2. Marc Lefkowitz asked question Bulbophyllum in category Bulbophyllums
  3. Tony Borowiecki asked question Can a Bealleara re-flower in category Oncidium Alliance
  4. Tony Borowiecki asked question Re-flowering Orchids in category Dendrobiums
  5. Sylvia Spence asked question How to care for my new orchid in category General Discussion

New Comments

  1. Robert H. Findlay commented on member plant Oncidium Sherry Baby by Luesa Estrada
  2. Judy Bailey commented on topic "Paphiopedilum culture differences " by Judith Pariseau
  3. David Hickman commented on topic "Mystery Orchid" by David Hickman
  4. Carol Holdren commented on topic "Bulbophyllum " by Marc Lefkowitz
  5. Carol Holdren commented on topic "Can a Bealleara re-flower" by Tony Borowiecki
  6. Carol Holdren commented on topic "How to care for my new orchid" by Sylvia Spence
  7. Bodil Bruus commented on member plant Ctt. Mrs. W. N. Elkins var. coerulea by Linda Thorne
  8. Jan E Teitsworth commented on topic "Can anyone identify this orchid?" by Jan E Teitsworth
  9. Carol Holdren commented on topic "Brassolaeliocattleyamaianh " by Kim Loan T Nguyen
  10. David garcia commented on member plant Myrmecophilia tibicinis stromburgkia trumpet player by David garcia