Flowering, production and seed quality in sweet potato clones cultivated under staking

IF 0.7 4区农林科学 Q4 HORTICULTURE

Horticultura Brasileira Pub Date : 2023-06-30 DOI:10.1590/s0102-0536-2023-e2522

Janete R da Silva, A. C. G. Fernandes, N. R. Valadares, R. A. Alves, Sandra Eulália S Faria, Clóvis HO Rodrigues, A. M. Azevedo

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引用次数: 0

Abstract

One difficulty in conducting breeding programs in the sweet potato is the low rate of flowering and seed production, which makes genetic recombination difficult. The aim of the present study was to select clones with superior flowering, production, and seed quality, and to verify the best time for crosses and seed harvesting. The study was carried out in the district of Montes Claros in the north of the state of Minas Gerais. Characteristics associated with flowering and seed production were evaluated in a randomized block design of 28 clones. The physiological quality of the seeds was evaluated in a completely randomized design using 11 clones. The data were submitted to analysis of variance and the Scott-Knott test (p≤0.05). Principal component analysis was carried out and a UPGMA dendrogram was created. July is the most recommended time for carrying out crosses, and August for harvesting the seeds. The UFMG01, LICURI, UFVJM06, UFVJM29, CAMBRAIA, UFVJM25, TCARRO 01, ARRUBA and UFMG02 clones were classified as more precocious for the first floral buds. CAMBRAIA and UFVJM29 were the most dissimilar, with a greater number of flowers and seeds, and should be prioritized as parents.

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定植栽培的甘薯克隆品种的开花、产量和种子质量

甘薯育种计划的一个难点是开花率和种子产量低，这给基因重组带来了困难。本研究的目的是选择开花率、产量和种子质量均优的克隆品种，并验证杂交和采种的最佳时间。研究在米纳斯吉拉斯州北部的蒙特斯克拉罗斯地区进行。通过对 28 个克隆品种进行随机区组设计，对与开花和种子生产相关的特征进行了评估。在完全随机设计中，对 11 个克隆品种的种子生理质量进行了评估。对数据进行了方差分析和斯科特-克诺特检验（P≤0.05）。进行了主成分分析，并绘制了 UPGMA 树枝图。建议在七月进行杂交，八月收获种子。UFMG01、LICURI、UFVJM06、UFVJM29、CAMBRAIA、UFVJM25、TCARRO 01、ARRUBA和UFMG02克隆的第一个花芽较早熟。CAMBRAIA 和 UFVJM29 的差异最大，花和种子的数量更多，应优先作为亲本。

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来源期刊

Horticultura Brasileira 农林科学-园艺

CiteScore

1.40

自引率

28.60%

发文量

审稿时长

4-8 weeks

期刊介绍： The journal Horticultura Brasileira, a quarterly journal, is the Official Publication of the Sociedade de Olericultura do Brasil. Its abbreviated title is Hortic. bras., and it should be used in bibliographies, footnotes, references and bibliographic strips.