土壤抗性和多变量分析作为选育巴西卡勒姆后代的辅助方法

IF 0.6 4区 农林科学 Q4 FORESTRY Revista Arvore Pub Date : 2022-01-01 DOI:10.1590/1806-908820220000025
L. Froufe, Antônio Nascim Kalil Filho, I. A. Bognola, A. Aguiar, E. B. D. Oliveira, J. A. Fowler
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引用次数: 0

摘要

巴西Calophyllum brasiliense是一种与潮湿和沼泽土壤相关的树种,目前正在开发精确的造林技术来管理和改良Calophyllum brasiliense。本研究估计了对土壤抗性响应的生长性状的遗传参数,作为鉴定和选择适应水饱和土壤的后代的辅助工具。这是在巴西螺的后代试验中进行的,从自然种群收集的种子中生长出1200棵幼苗,在单树地块的随机完全区组设计中种植。采用REML/BLUP方法进行遗传统计分析。各子代胸径和胸高的差异有统计学意义(p<0.01)。胸高和胸高的遗传变异系数和遗传力在个体和后代水平上均较低,表明胸高和胸高的遗传控制作用较弱,而胸高和胸高的遗传和表型相关性较高且显著。理论遗传增益和多元统计分析表明,三组后代对淹水土壤具有不同程度的耐受性和适应性,这对该物种的未来育种计划有帮助,尽管仍需要进一步的高龄分析。耐受性和敏感性后代的平均高度分别低于理论值的12%和58%,表明持续的土壤淹水对该物种有害。
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SOIL RESISTANCE AND MULTIVARIATE ANALYSIS AS AN AUXILIARY METHOD FOR SELECTING Calophyllum brasiliense PROGENIES
ABSTRACT Precision silviculture is being developed to manage and improve Calophyllum brasiliense, a tree species associated with wet and swampy soils. This study estimated genetic parameters for growth traits in response to soil resistance as an auxiliary tool for identifying and selecting progenies adapted to water-saturated soils. This was undertaken in a progeny test of C. brasiliense in which 1,200 seedlings grown from seeds collected from a natural population were planted in a randomized complete block design for single-tree plots. Genetic statistical analysis was conducted using the REML/BLUP method. Significant differences (p<0.01) in diameter at breast height were observed among the progenies. The coefficients of genetic variation and heritability at the individual and progeny levels were low for diameter at breast height and height, indicating low genetic control for these traits, while high positive and significant genetic and phenotypic correlations were detected between diameter at breast height and height. Theoretical genetic gains and multivariate statistical analysis indicated three groups of progenies with different degrees of tolerance and adaptability to flooded soils, which could be useful in future breeding programs for this species, although further analysis at advanced ages is still required. The mean heights of tolerant and sensitive progenies were 12 and 58%, respectively, lower than the theoretical values, indicating that constant soil flooding is harmful to this species.
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来源期刊
Revista Arvore
Revista Arvore FORESTRY-
CiteScore
1.00
自引率
0.00%
发文量
32
审稿时长
4-8 weeks
期刊介绍: A Revista Árvore é um veículo de comunicação científica da Sociedade de Investigações Florestais – SIF. O jornal é de acesso gratuito, revisado por pares, que publica bimestralmente trabalhos científicos originais no campo da Ciência Florestal. As áreas temáticas para publicação são: Ambiência e Conservação da Natureza, Manejo Florestal, Silvicultura e Tecnologia da Madeira e Utilização de Produtos Florestais. A política editorial visa manter alta conduta ética em relação à publicação e aos seus funcionários, rigor na qualidade dos artigos científicos, seleção de revisores qualificados, respeito profissional aos autores e processo de tomada de decisão imparcial. A Revista Árvore publica artigos apenas em inglês. Artigos de revisão podem ser publicados se houver uma discussão relevante resumindo o estado da arte sobre o assunto. A revisão estrita da literatura não é aceita.
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