TECHNOLOGICAL PARAMETERS OF SEEDS APPLIED TO THE SELECTION OF SUPERIOR MOTHER TREES FROM Ormosia discolor SPRUCE EX BENTH

IF 0.6 4区 农林科学 Q4 FORESTRY Revista Arvore Pub Date : 2021-01-01 DOI:10.1590/1806-908820210000036
Helinara Lais Vieira Capucho, Manuel de Jesus Vieira Lima Júnior, A. Mendes, M. T. G. Lopes, Amazoneida Sá Peixoto Pinheiro, Laerte Nogueira da Silva
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Abstract

ABSTRACT The study on the native species of fast growth and nodulation capacity, Ormosia discolor, intends to conserve genetic resources and make available seed lots of high vigor for seed orchards. This work evaluates the physical and physiological characteristics of seeds from 20 O. discolor trees as a subsidy for selecting superior mother trees. Twenty matrices selected from a population in the state of Amazonas were inventoried. Physical tests were performed on the seeds collected, including water content, biometrics, the weight of one thousand seeds, and coat permeability test. For vigor estimates and classification regarding seed storage, the seeds were frozen for five months. The germination test was carried out at a constant temperature of 30 °C. It was used a completely randomized design consisting of 20 mother trees, 4 replicates, and 25 seeds per plot. The germination characteristics evaluated were germination percentage, speed index, mean germination time, and synchronization index. Cut seeds are more efficient for determining water content. All biometric variables are representative for the selection of vigorous lots, with emphasis on geometric diameter, surface area, and sphericity of seeds. Species seeds were classified as orthodox and as having physical dormancy. The protrusion of the primary root is the best morphological characteristic for evaluating germination in the laboratory. The mother trees 7, 16, and 10 showed superior characteristics for dendrometric and technological data, being indicated for marking, phenological monitoring, and planting.
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种子技术参数在红唇云杉优良母树选择中的应用
摘要对生长快、结瘤能力强的土生植物赤藓(Ormosia discolor)进行研究,旨在节约遗传资源,为种子园提供大量高产种子。本研究对20株黄绿树种子的生理特性进行了评价,为选择优质母树提供依据。从亚马逊州的一个人群中选择了20个矩阵进行了调查。对采集的种子进行物理测试,包括含水量、生物特征、千粒重、被皮渗透性测试。为了进行活力评估和种子储存分类,种子冷冻5个月。发芽试验在30℃恒温条件下进行。试验采用完全随机设计,母树20株,4个重复,每小区25粒种子。发芽特性评价为发芽率、速度指数、平均发芽时间和同步指数。切分的种子对测定含水量更有效。所有的生物特征变量都具有代表性,以种子的几何直径、表面积和球形度为重点。物种种子分为正统种子和具有物理休眠的种子。在实验室中,初生根的突出是评价发芽的最佳形态特征。7号、16号和10号母树在树形学和技术数据上均表现出优良的特征,可用于标记、物候监测和种植。
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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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