Toona ciliata genotype selection with the use of individual BLUP with repeated measures
The increasing demand for raw material for multiple uses of forest products and by-products has attracted the interest for fast growing species, such as the Australian Cedar (Toona ciliata), which presents high productive and economic potential. This study aimed at estimating genotypic parameters and values for the species through the use of the BLUP procedure, at individual level, with repeated measures, by means of the conventional evaluation procedures and the introduction of innovative digitalization of the measurements by digital camera with the images provided by the Imagej software system. The main objective is to subsidize the beginning of a breeding program for the species. The assays were carried out in private properties, in plantations located in the state of Rio de Janeiro, Brazil. The results generated by three evaluations revealed that the image digital analysis is adequate to quantify characteristics of Toona ciliata. It is also an effective and accurate alternative to minimize the costs of data collection in evaluations with the species. There was high accuracy for the characters plant height, diameter at breast height and cylindrical volume. Out of the 90 genotypes evaluated, 38 expressed genotypic values predicted for the diameter at breast height higher than the general average of this character, 33 for the cylindrical volume and 49 for height, allowing gains of up to 24.9 % in average for cylindrical volume. The method of mixed models (REML/BLUP) applied via the SELEGEN software system, using the BLUP procedure at individual level and repeated measures in each individual proved to be adequate to estimate the genetic parameters and predict genotypic values in situations of unbalanced data. Therefore, it is very useful and practical for Toona ciliata genetic breeding programs.
Main Authors: | Ferreira,Rulfe Tavares, Viana,Alexandre Pio, Barroso,Déborah Guerra, Resende,Marcos Deon Vilela de, Amaral Júnior,Antônio Teixeira do |
---|---|
Format: | Digital revista |
Language: | English |
Published: |
Escola Superior de Agricultura "Luiz de Queiroz"
2012
|
Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162012000300006 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
Toona ciliata genotype selection with the use of individual BLUP with repeated measures.
by: FERREIRA, R. T., et al.
Published: (2012-10-22) -
Seleção de genótipos de cedro australiano (Toona ciliata) via metodologia REML/BLUP.
by: FERREIRA, R. T., et al.
Published: (2010-03-23) -
Organic Fertilizer for Production of Toona ciliata Seedlings
by: Marco,Rudinei De, et al.
Published: (2019) -
Propagação vegetativa de cedo-australiano (Toona ciliata M. Roemer) por miniestaquia
by: Souza,Jonicélia Cristina Araújo Vieira de, et al.
Published: (2009) -
Selection via simulated individual BLUP based on family genotypic effects in sugarcane
by: Resende,Marcos Deon Vilela de, et al.
Published: (2006)