Flowering acceleration in native Brazilian tree species for genetic conservation and breeding

IF 1.7 3区农林科学 Q2 FORESTRY

Annals of Forest Research Pub Date : 2020-03-16 DOI:10.15287/afr.2019.1751

G. G. C. Mendes, G. A. Santos, M. Resende, S. V. Martins, G. A. Souza, A. Nunes, T. G. V. Martins

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引用次数: 2

Abstract

Grafting and growth retardants are commonly used in breeding programs to stimulate flower production. However, little is known about their effects on Brazilian tree species. The aim of this study was to investigate the vegetative and reproductive development of grafted tree seedlings treated with paclobutrazol (PBZ) and grown under greenhouse or outdoor conditions. Potted seedlings of Jacaranda mimosifolia , Handroanthus heptaphyllus , Swietenia macrophylla , Schinus terebinthifolius , Cariniana legalis , and Hymenaea courbaril were evaluated. Shoot number, length, and circumference as well as flower and fruit numbers were determined at 50 and 90 days after PBZ application. Data were subjected to analysis of variance, and means were compared by Tukey’s test (P ≤ 0.05). Growing conditions influenced the vegetative parameters of seedlings, especially after 90 days. J. mimosifolia and S. terebinthifolius responded positively to flowering induction, and their fruit and flower numbers differed between growing environments. Potted grafts of the six native tree species were successfully grown. Grafting and PBZ application induced early flowering in J. mimosifolia and S. terebinthifolius .

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用于遗传保护和育种的巴西本土树种加速开花

嫁接和生长延缓剂通常用于育种计划，以刺激花卉生产。然而，人们对它们对巴西树种的影响知之甚少。本研究的目的是研究在温室或室外条件下用多效唑（PBZ）处理的嫁接树幼苗的营养和生殖发育。对蓝花莲含羞草、七叶莲、大叶Swietenia macrophylla、大戟Schinus terebinthifolis、法氏Cariana legis和香菜Hymenaea courbaril的盆栽幼苗进行了评价。在施用PBZ后50和90天测定芽数、长度和周长以及花和果实数。对数据进行方差分析，并用Tukey检验对平均值进行比较（P≤0.05）。生长条件影响幼苗的营养参数，尤其是在90天后。含羞草和terebinthifolis对开花诱导反应积极，不同生长环境下它们的果实和花朵数量不同。六种本土树种的盆栽移植物成功种植。嫁接和施用PBZ诱导了含羞草和terebinthifolis的早花。

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来源期刊

Annals of Forest Research FORESTRY-

CiteScore

2.20

自引率

11.10%

发文量

审稿时长

12 weeks

期刊介绍： Annals of Forest Research is a semestrial open access journal, which publishes research articles, research notes and critical review papers, exclusively in English, on topics dealing with forestry and environmental sciences. The journal promotes high scientific level articles, by following international editorial conventions and by applying a peer-review selection process.