Selection of desert rose accessions with high ornamental potential

IF 1.1 Q3 HORTICULTURE

Ornamental Horticulture Pub Date : 2023-10-01 DOI:10.1590/2447-536x.v29i4.2668

Mirella Christie Rodrigues de Abreu, N. R. Valadares, C. C. F. Possobom, Rosane Borges Mendes, S. Nietsche

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Abstract

Abstract Adenium obesum belongs to the Apocynaceae family and is characterized as a succulent shrub with a multitude of botanical and morphological features of ornamental interest. The aim of this study was to evaluate the genetic dissimilarity of 28 accessions of A. obesum using morphological descriptors and multivariate techniques with the aim of pre-selecting the genotypes with the greatest ornamental potential. The distribution of the number of flowers throughout the year showed two flowering peaks in January and September. Twenty-one petal pigmentation patterns were identified, and 50% of the accessions had double-petal arrangement. The Gower’s algorithm and the UPGMA-generated dissimilarity matrix indicated the formation of three groups. While Tocher’s clustering method separated the accessions into eight groups showing greater ability to distinguish the evaluated genotypes. In conclusion, the multivariate analyses applied were effective in accessing the genetic diversity among the 28 accessions evaluated. The accessions ICA001, ICA005, ICA006, ICA018, ICA019, and ICA027 were preselected to compose the germplasm collection due to their high ornamental potential.

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选育具有高观赏潜力的沙漠玫瑰品种

Abstract Adenium obesum 属于天南星科（Apocynaceae），是一种肉质灌木，具有多种观赏价值的植物学和形态学特征。本研究的目的是利用形态学描述指标和多元技术评估 28 个苘麻品种的遗传异质性，以预选出最具观赏潜力的基因型。花朵数量在全年的分布情况显示，1 月和 9 月是两个开花高峰。鉴定出 21 种花瓣色素模式，50% 的品种具有重瓣排列。高尔算法和 UPGMA 生成的异质性矩阵显示形成了三个群组。而托彻聚类法则将加入的品种分为 8 组，显示出更强的区分所评估基因型的能力。总之，所采用的多元分析方法能有效地了解所评估的 28 个登录品种的遗传多样性。由于ICA001、ICA005、ICA006、ICA018、ICA019和ICA027具有很高的观赏潜力，因此被预选为种质资源。

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来源期刊

Ornamental Horticulture Agricultural and Biological Sciences-Horticulture

CiteScore

2.20

自引率

14.30%

发文量

审稿时长

50 weeks

期刊介绍： The Journal ORNAMENTAL HORTICULTURE - OH (Revista Brasileira de Horticultura Ornamental) is an official publication of the Brazilian Society for Floriculture and Ornamental Plants (Sociedade Brasileira de Floricultura e Plantas Ornamentais) - SBFPO Short title of the journal: ORNAM. HORTIC. This Journal aim to publish technical and scientific researches in floriculture, ornamental plants, landscaping and landscapes from members of this Society and others. The manuscripts can be submitted in portuguese, but publication must be in English language (U.S.). All the manuscripts submitted to Ornamental Horticulture (Revista Brasileira de Horticultura Ornamental) - OH must not have been submitted or published at the same time, partial or totally, to other journal. It is allowed to read, download, copy, distribute, print, search, or link to parts or the full texts to use them for any other lawful purpose. The reproduction of articles published in this journal is authorized, under the condition that the source is acknowledged.