| Autor: |
Haunold, Alfred, Stanwood, P.C. |
| Zdroj: |
Crop Science; January 1985, Vol. 25 Issue: 1 p194-196, 3p |
| Abstrakt: |
This research was initiated to evaluate long‐term hop (`Humulus lupulus`` L.) pollen storage for breeding purposes and germplasm preservation. Air‐dried pollen was stored in a refrigerator (3°C), a freezer (−18°C), and in liquid nitrogen (−196°C) and compared with fresh pollen by hand pollination of receptive female flowers and subsequent seed germination tests. Pollen stored in liquid N averaged four seeds per cone in test crosses over a 2‐year period as compared to slightly over five seeds per cone from fresh pollen. Pollen stored at −18°C lost about half of its viability after 1 year, while pollen stored at 3°C became nonfunctional within 1 year. Reducing moisture content of fresh pollen to about 10% prior to cold temperature storage was essential. |
| Databáze: |
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