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| Titel: |
Vegetative Growth and Freezing Tolerance of White Clover ( Trifolium repens L.) Genotypes from Svalbard |
| Auteur: |
Svenning, Mette M. Røsnes, Kirsti Lund, Leidulf Junttila, Olavi |
| Verschenen in: |
Acta agriculturae Scandinavica. Section B, Soil and plant science |
| Paginering: | Jaargang 51 (2001) nr. 1 pagina's 10-16 |
| Jaar: |
2001-02-01 |
| Inhoud: |
Vegetative growth and freezing tolerance of two genotypes of white clover ( Trifolium repens L.) collected at Svalbard (latitude 78°39' N, longitude 16°23' E) were studied in a daylight phytotron at controlled temperature and humidity. For comparison, two genotypes of a new Norwegian cultivar, Norstar, and one genotype of the cultivar AberHerald were included in the experiments. The genotypes from Svalbard gave higher dry-matter yields than the genotypes of Norstar, and one of them also exceeded the AberHerald genotype in dry-matter production at the temperatures studied, constant 12°C and alternating 15 9°C and 12 6°C (12 12 h). The genotypes from Svalbard were more tolerant of freezing than all the other genotypes. After a successive hardening treatment at 6°C and 0.5°C they obtained LT 50 values (temperature for 50% survival) of -16°C. The origin of these genotypes is not known, but their high productivity and freezing tolerance may make them useful for further breeding of white clover for marginal conditions. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 7 van 7 gevonden artikelen
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