Machado José Arimatéia Rabelo, Freitas Miguel Luiz Menezes, Paiva Daniela Ivana, Souza Bruno Marchetti de, Sousa Valderês Aparecida De, Martins Karina, Oliveira Edilson Batista, Aguiar Ananda Virginia De
Departamento de Tecnologia e Inovação, Instituto de Pesquisas Ambientais, Rua do Horto, 931, São Paulo 02377-000, SP, Brazil.
Programa de Pós-Graduação em Ecossistemas Agrícolas e Naturais, Universidade Federal de Santa Catarina, Rodovia Ulysses Gaboardi, Km 3, Curitibanos 89520-000, SC, Brazil.
Plants (Basel). 2024 Sep 14;13(18):2580. doi: 10.3390/plants13182580.
is a species known for its valuable wood and nuts, but it is threatened with extinction. The plantation of forests for genetic resource conservation is a complementary strategy designed to reduce the species' genetic variability loss. This study aimed to evaluate the technical and economic viability of for genetic conservation through use. The analyzed provenance and progeny trial was established in 1982 in Itapeva, Brazil. It was structured using a compact family blocks design with 110 open-pollinated progenies from five natural populations, three replicates, ten plants per subplot, and 3.0 m × 2.0 m spacing. After 33 years, the trial was evaluated for total height, diameter at breast height, wood volume, and survival. The variance components and genetic parameter estimates were performed using Restricted Maximum Likelihood/Best Linear Unbiased Prediction methods (REML/BLUP) methods with the Selegen software (version 2014). The production and management scenarios were obtained using the SisAraucaria software (version 2003). Sensitivity analysis and economic parameter estimates were obtained through various economic evaluation methods using the Planin software (version 1995). In general, the genetic parameters indicated that the population has enough variability for both conservation and breeding purposes, suggesting technical viability for the establishment of a seed orchard. The economic parameters indicated that the commercialization of wood and araucaria nuts proved to be more profitable than wood production by itself. In conclusion, araucaria genetic conservation through use is a technically and economically viable ex situ conservation strategy.
是一种以其珍贵木材和坚果而闻名的物种，但它正面临灭绝的威胁。为保护遗传资源而进行的森林种植是一种旨在减少该物种遗传变异性丧失的补充策略。本研究旨在评估通过利用[该物种名称未给出]进行遗传保护的技术和经济可行性。所分析的种源和子代试验于1982年在巴西伊塔佩瓦建立。它采用紧凑的家系区组设计，有来自五个自然种群的110个自由授粉子代，三个重复，每个小区十株植物，间距为3.0米×2.0米。33年后，对试验进行了总高度、胸径、木材体积和存活率的评估。使用Selegen软件（2014版）的限制最大似然/最佳线性无偏预测方法（REML/BLUP）进行方差分量和遗传参数估计。使用SisAraucaria软件（2003版）获得生产和管理情景。通过使用Planin软件（1995版）的各种经济评估方法获得敏感性分析和经济参数估计。总体而言，遗传参数表明该种群具有足够的变异性用于保护和育种目的，这表明建立种子园在技术上是可行的。经济参数表明，木材和南洋杉坚果的商业化被证明比单纯的木材生产更有利可图。总之，通过利用进行南洋杉遗传保护是一种在技术和经济上可行的迁地保护策略。
