Pollination

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

Open Pollination

July 8, 2017
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  My first steps as a hybridizer were to cross standard daffodils. I read in the literature that it is not necessary to prevent open pollination because only 1 to…

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Narcissus cantabricus crosses

February 2, 2017
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   These two miniature daffodils are flowering in the greenhouse. The seedlings of both crosses often generate unreduced pollen. I shall try the first one out of doors this year…

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Autumn blooming Narcissus

Narcissus tazetta has a few Autumn blooming varieties from dry Mediterranean areas that bloom when the first rains arrive in the fall and winter, these varieties don’t need a winter…

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Some crosses with diploid tazettas and their fertility

June 18, 2016
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Crosses of different  diploid and tetraploid poeticus varieties with N. tazetta were made before 1906 and 1930 especially in the Netherlands from J.B. van der Schoot. To the first group…

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Winter bulbocodiums

It has been a cold frosty winter here and many flowers are later than usual. The tazettas in the field are miserable. The paperwhites are miserable too but they seem…

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The generation of fertile allotetraploid hybrids of narcissus species by chromosome doubling

June 21, 2015
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This spring I found many diploid pollen grains on one plant of Hawera and three plants of Fairy Chimes. These species hybrids were transformed with Oryzalin from diploids to tetraploids or…

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