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

Citation

Rasmussen, A and Smith, TE and Hunt, MA, Cellular stages of root formation, root system quality and survival of Pinus elliottii var. elliottii P. caribaea var. hondurensis cuttings in different temperature environments, New Forests, 38, (3) pp. 285-294. ISSN 0169-4286 (2009) [Refereed Article]

Copyright Statement

Copyright 2009 Springer Science+Business Media B.V

DOI: doi: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 16weeks 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 Details

Item Type:Refereed Article
Keywords:propagation, stem anatomy, root anatomy, callus, cuttings, cortex, abiotic, Pinus
Research Division:Agricultural and Veterinary Sciences
Research Group:Forestry Sciences
Research Field:Tree Nutrition and Physiology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Forestry
Objective Field:Softwood Plantations
Author:Hunt, MA (Professor Mark Hunt)
ID Code:102710
Year Published:2009
Web of Science® Times Cited:12
Deposited By:Plant Science
Deposited On:2015-09-03
Last Modified:2015-10-06
Downloads:0

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