Strategies for the analysis of single-tree plot experiments in Eucalyptus plantations  

作　　者：Heloisa Guimaraes Santos Flavia Maria Avelar Goncalves Jose Luis Lima Aurelio Mendes Aguiar Gabriel Dehon Sampaio Pecanha Rezende Bruno Marco de Lima Magno Antonio Patto Ramalho 

机构地区：[1]Departamento de Biologia,Setor de Genetica E Melhoramento de Plantas,Universidade Federal de Lavras-UFLA,Lavras,MG,Brasil [2]Suzano Papel E Celulose,Sao Paulo,SP,Brasil [3]Bracell SP Celulose Ltda,Lencóis Paulista,SP,Brasil

出　　处：《Journal of Forestry Research》2021年第6期2437-2445,共9页林业研究（英文版）

基　　金：This study was financed in part by the Coordenacao de Aperfeicoamento de Pessoal de Nível Superior-Brasil(CAPES)-Finance Code 001,and by the National Council for Scientific and Technological Development(CNPq).

摘　　要：To verify if the response by Eucalyptus clones in a single-tree plot is influenced by neighboring plants and to determine the effect of missing and/or dominated plants,seven eucalyptus trials in four Brazilian states were analyzed in a randomized complete block design with one plant/plot and 30 replications.Mean annual increment(MAI,m^(3)ha^(-1)per year)was determined for three-year-old clones.The influence of neighboring clones was estimated by a linear regression coefficient between the MAI of each clone/plot and the average of a clonal MAI and its eight neighbors.To determine the effect of missing and/or dominated trees,a correction between the MAI and the area available/plant was applied.Subsequent analysis considered unadjusted and adjusted data for missing and dominated trees.Estimate of accuracy and index of coincidence were used to compare the adjustments.In single-tree plots,clone performances were not influenced by neighboring plants.Experimental accuracy was not increased by any of the adjustments employed and the clone ranking was not altered,and therefore did not justify their use.

关 键 词：Single-tree plot Missing plant adjustment Eucalyptus breeding 

分 类 号：S792.39[农业科学—林木遗传育种]