| Autor: |
McMahon, Tracey V., Hung, Cao Dinh, Trueman, Stephen J. |
| Zdroj: |
Australian Forestry; January 2014, Vol. 77 Issue: 1 p9-14, 6p |
| Abstrakt: |
SummaryMinimal-growth storage may be a simple method to preserve germ plasm while tree varieties undergo clonal selection, but there has previously been little evidence to demonstrate that minimal-growth storage delays maturation. This study assessed the maturation of 10 Corymbia torelliana × C. citriodoraclones whose shoots had been stored for 12 months using three different methods: (1) as ex-vitrostock plants in the nursery; (2) in-vitroat 25°C; and (3) in-vitrounder minimal-growth conditions at 14°C. Minimal-growth storage increased the subsequent frequency of adventitious rooting in cuttings of 6 of the 10 clones, providing increases in rooted cutting production of between 53% and 163% over ex-vitronursery storage. Minimal-growth storage also increased adventitious root number in two clones and root mass in four clones. C. torelliana × C. citriodoraclones underwent maturation during ex vitrostock plant archiving in the nursery, but in-vitrostorage under minimal-growth conditions was highly effective in delaying clonal maturation. |
| Databáze: |
Supplemental Index |
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