chromosome counts

Listing 1 - 10 from 18 for chromosome counts

FLORA OF NORTH AMERICA - History: Content
... documented counts are available from North American material or from an adjacent region. No new counts are published intentionally in the flora. Chromosome counts from nonsporophyte tissue have been converted to the 2n form. A literature reference for each reported chromosome number is available in the Flora of North America database (see below). The base number (x =) is ...
hua.huh.harvard.edu

Cattleya skinneri
... the lip. Plants have been referred to as var. occulata, but when found in collections are usually labeled as var. alba. According to Dr. Carl Withner, such plants should be labeled as var. occulata alba. HYBRIDIZING NOTES: Chromosome counts are n = 20 and 2n = 40 (ref. ?Tanaka, ?Withner). This species is dominant when used with most other species. The most ...
retirees.uwaterloo.ca

Dendrobium kingianum
... last nearly a month. The flowers may be faintly fragrant or very sweetly scented. HYBRIDIZING NOTES: Chromosome counts are 2n = 38 (ref. 580), 2n = 76 (ref. 151, 187, 504, 580), 2n = 112-114 ... and in some red breeding lines. Tetraploids, however, are very rare. He found no correlation between chromosome number and plant habit, cane length, leaf size or shape, flower color, or any other characteristic ...
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Chromosome Table - Croton Research Network
... = 16 or 32 (one sp.). Based on these data, we are very eager to obtain chromosome counts from additional taxa, particularly in section Astraea, to see if other members share n = ... distinctive section Eluteria has so far been counted, and section Crotonopsis should similarly be targeted for chromosome counts. Very few native Old World taxa have been counted, so a better representation of chromosome ...
www.botany.wisc.edu

Untitled Document
... , and to reconstructing the evolutionary history of a group of plants. The following tables demonstrate the tremendous diversity of chromosome numbers found in the genus Salvia, ranging from N=6 to N=44. Linked to this page is a compilation of over 600 chromosome counts for Salvia and closely related Mentheae. Below can be seen examples of chromosomes in Salvia (from Afzal ...
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CPN Samples
... a sundew hybrid is either not formed at all after cross-pollinating two species with different chromosome counts, or the resultant hybrid is sterile and totally unable to produce seed. Fernando Rivadavia ( ... . anglica (40 chromosomes) I created a hexaploid D. x nagamotoi (60 chromosomes), which is (by chromosome count) one third D. spatulata and two thirds D. anglica. This new hexaploid is fertile ( ...
www.carnivorousplants.org

CPN Samples
... the sterility barrier in northern Drosera hybrids. (Those unfamiliar with the n, 2n and x chromosome number designations as well as meiosis vs. mitosis may wish to consult the appropriate chapters of ... amphiploid species from the hybrid in a consistent way? Wood (1955) accomplished this by using chromosome counts of root tip (chosen because of active growth and many mitoses being present) squashed ...
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Geraniaceae Group News 2000
... Oddity, R. Clifton Notes on the Drakensberg Mountains , R. Clifton Seed Talk , various members Pelargonium cucullatum and a note on "Regals" , Richard Clifton (photo Fiona Powrie) A Use for Chromosome Counts, Dr. Ian Gillam Plant Breeders' Rights, R. Clifton Fingerprinting Pelargonium Cultivars. report of Dr. Wolff's talk Sarcocaulon crassicaule, Les Hodgkiss (photo Les Hodgkiss) Monsonia section ...
www.geocities.com/RainForest

Story of a Paph Cross, Bob Wellenstein 2 Dec 98
... establish ploidy level this way. Scott Mcphee (scott in moist N. Calif) So, if you are buying a plant that claims to be 4n, you are taking the dealer on their word. uncleearl (Earl from Vacaville, CA) Having done chromosome counts (grad school), I don't envy you the task. RCW-upstateNY (Bob in Candor) If it is bred from two confirmed 4N plants, then ...
www.geocities.com/~marylois

Procedures and Guidelines for Requesting a Research Grant
... of Magnolia breeding results that would be made available through the Magnolia Society available through the internet Studies of Magnolia liliiflora, M. sprengeri and other species complexes Chromosome counts Botanical Research Study the biosystematics of Magnolia and the Magnoliaceae Phylogeny of the family and species The selection of superior clones from natural populations and making these, ...
www.magnoliasociety.org