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Cellular stages of root formation, root system quality and survival of Pinuselliottii var. elliottii x P. caribaea var. hondurensis cuttings in different temperature environments.

Rasmussen, A. and Smith, T.E. and Hunt, M.A. (2009) Cellular stages of root formation, root system quality and survival of Pinuselliottii var. elliottii x P. caribaea var. hondurensis cuttings in different temperature environments. New Forests, 38 (3). pp. 285-294.

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Article Link(s): http://dx.doi.org/10.1007/s11056-009-9147-6

Abstract

Time to first root in cuttings varies under different environmental conditions and understanding these differences is critical for optimizing propagation of commercial forestry species. Temperature environment (15, 25, 30 or 352C) had no effect on the cellular stages in root formation of the Slash * Caribbean Pine hybrid over 16 weeks as determined by histology. Initially callus cells formed in the cortex, then tracheids developed and formed primordia leading to external roots. However, speed of development followed a growth curve with the fastest development occurring at 25C and slowest at 15C with rooting percentages at week 12 of 80 and 0% respectively. Cutting survival was good in the three cooler temperature regimes (>80%) but reduced to 59% at 35C. Root formation appeared to be dependant on the initiation of tracheids because all un-rooted cuttings had callus tissue but no tracheids, irrespective of temperature treatment and clone.

Item Type:Article
Corporate Creators:DEEDI
Additional Information:© Springer Science+Business Media B.V.
Keywords:Plant propagation; cortex; cuttings; stem anatomy; root anatomy; root systems; rooting capacity; survival; temperature; Tracheids; vegetative propagation; Pinus.
Subjects:Agriculture > Agriculture (General) > Agricultural meteorology. Crops and climate
Plant culture > Tree crops
Forestry
Deposited On:26 Feb 2010 06:58
Last Modified:05 Oct 2010 03:18

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