In 2007, 2008 and 2009 I saw 21 clones of different N. x alleniae ( N. miniatus x N. viridiflorus ) near Conil in Southern Spain. I had my facility for testing pollen with me and found out, that 13 clones…
Fertility of N. x alleniae
Category: Cytology
This is about the study of narcissus cells and includes chromosome work, molecular genetics, biochemistry, pollen size and shape, etc,.
Pollen in the freezer
The pollen in the pictures is from N. bulbocodium, Emerald Sea, N. assoanus and N. fernandesii.It was in the freezer since 2006. It is to be seen, that many polllen grains sprout and therefore can be used for successful pollination.…
Brandham article in RHS Yearbook
Hi again, I received my copy of the RHS Yearbook today. It makes very interesting reading. I was particularly interested in an article by Peter Brandham regarding the classification of the species. In it he suggests that it may be…
inbreeding
INBRREEDING There is some misunderstanding about inbreeding Most diploid organism have so called bad or even lethal genes As long as these are complemented by a good gene ( are in a heterozygous condition) there is nothing wrong ( usually…
DnA content of all species of narcissi..
Hello Daffodil enthusiast For those interested; The following link contains a paper on all species of narcissi .Happy reading. (Thanks Nancy) http://daffodilusa.com/references/references.html#research Ben J.M.Zonneveld Nationaal Herbarium Nederland POBox 9514 2300 RA Leiden, The Netherlands telf 071 5274738 E-mail:
Looking at pollen (2)
The same speculations made for fertile NNJ can be done for NNTr, for example Silver Bells, which is fertile and I think in many cases forms NTr-Pollen and egg cells. Equivalent crosses as with NNJ can be made.The result of Silver Bells (NNTr plus one chromosome) crossed with…