Pollination

This is about the relationship between flower structure and pollination efficiency. It also includes reproductive costs and success.

Seedlings 3

May 24, 2010
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Wilf and All,   Crosses of standard daffodils with N. tazetta patulus are possible, but I found till now only Ufo, Loch Coire and Actaea to produce some seeds. An…

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Seedlings 1

May 23, 2010
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  All, This spring I made some new observations concerning fertility of crosses between standard daffodils and species. Tetraploid standard daffodils with four chromosome sets (NNNN) crossed with diploid species for example…

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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…

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Looking at pollen(3)

May 1, 2009
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In December 18, 2008 I send two e-mails to Daffnet with the titles ‘Looking at pollen (1)’ and ‘Looking at pollen (2)’. I reported that some daffodils, which should be…

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Looking at pollen

December 18, 2008
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  Hello Theo A most interesting survey of pollen fertility in narcissus hybrids .I like to make two remarks. 1. From several wild narcissi tetraploids are available (Zonneveld (2008) Pl…

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Looking at pollen (2)

December 18, 2008
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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…

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