Biologia Plantarum

, Volume 59, Issue 2, pp 389–393 | Cite as

Marker-trait associations for survival, growth, and flowering components in Eucalyptus cladocalyx under arid conditions

Brief Communication

Abstract

Understanding the basis of the genetic variations responsible for the complex traits found in Eucalyptus cladocalyx under arid environmental conditions is crucial for designing genetic architecture studies. Forty-five half-sib families from Australia were used to identify inter-simple sequence repeat (ISSR) markers that are associated with growth (height, diameter at breast height, and stem straightness), flowering traits (flowering intensity, flowering precocity, reproductive capacity, and late flowering) and tree survival under arid conditions in southern Atacama Desert, Chile. Each DNA pellet consisted of a pool of five trees from each family. ISSR markers were associated with all the traits studied and accounted for 9.8 to 23.4 % of the phenotypic variation. Several loci were associated with more than one trait. For example, UBC810(450–500 bp), ISO1(600–610 bp), and TGT9(780–800 bp) were associated with three of the traits studied. These identified genomic regions may contribute to the increase of the efficiency of the conventional tree breeding program for E. cladocalyx.

Additional key words

inter-microsatellites marker-assisted selection structured populations sugar gum. 

Abbreviations

DBH

diameter at breast height

EF

early flowering

FI

flowering intensity

HT

total height

ISSR

inter simple sequence repeat

LF

late flowering

PCoA

principal coordinates analysis

RC

reproductive capacity

ST

stem straightness

TS

survival

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Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  • P. Ballesta
    • 1
  • F. Mora
    • 2
  • E. Ruiz
    • 3
  • R. Contreras-Soto
    • 1
    • 4
  1. 1.Faculty of Forest SciencesUniversity of ConcepciónConcepciónChile
  2. 2.Institute of Biological SciencesUniversity of TalcaTalcaChile
  3. 3.Department of BotanyUniversity of ConcepciónCasillaConcepción, Chile
  4. 4.Department of AgronomyState University of MaringáMaringá, ParanáBrazil

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