Characterization of tomato genetic resources in the function of breeding

Q4 Biochemistry, Genetics and Molecular Biology
S. Glogovac, A. Takač, M. Belović, J. Gvozdanović-Varga, N. Nagl, J. Červenski, D. Danojević, D. Trkulja, S. Prodanović, T. Živanović
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引用次数: 0

Abstract

Tomato is one of the most important species belonging to the Solanaceae family. Focusing on the importance of tomato in human nutrition and the problem of narrowed genetic variability, the aim of the study was to assess morphological and chemical diversity in IFVCNS germplasm collection. Twenty genotypes were analysed for the morphological and chemical fruit traits: average mass (g), length (cm), diameter (cm), pericarp thickness (mm), locules number, moisture content (%), total soluble solids (°Brix), ash content (%), total acidity (%) and pH value. Selected plant material for analysis included: landraces, traditional varieties, breeding lines and commercial varieties. Differences among tomato genotypes in all fruit traits were determined. Fruit mass and locules number had the highest coefficient of variation. The least differences between genotypes were observed in the fruit moisture content. Four principal components accounted for 90.6% of total variance or 36.5%, 24.2%, 19.8% and 10.1%, respectively. Along the axis of the first main component, genotypes were classified into three groups. The first component was defined by fruit length, diameter and mass. The second component was correlated with pericarp thickness and locules number, and the third with moisture content, ash content and total soluble solids. Based on the cluster analysis, genotypes were classified into three groups which were in agreement with the PCA groups. Hybridization between genotypes from different groups was proposed in order to create new hybrids and varieties and to increase tomato germplasm diversity. By crossing those genotypes, improved recombinations in morphological and chemical traits can be expected.
番茄遗传资源在育种中的功能表征
番茄是茄科植物中最重要的一种。鉴于番茄在人类营养中的重要地位和遗传变窄的问题,本研究旨在评估IFVCNS种质资源的形态和化学多样性。分析了20个基因型果实的形态和化学性状:平均质量(g)、长度(cm)、直径(cm)、果皮厚度(mm)、室数、含水量(%)、总可溶性固形物(°Brix)、灰分含量(%)、总酸度(%)和pH值。选择的分析植物材料包括:地方品种、传统品种、育种品系和商品品种。测定了番茄基因型间果实各性状的差异。变异系数最高的是果实质量和室数。不同基因型间果实含水量差异最小。4个主成分占总方差的90.6%,分别为36.5%、24.2%、19.8%和10.1%。沿第一主成分轴,基因型可分为三组。第一个分量由果实的长度、直径和质量来定义。第二组分与果皮厚度和室数有关,第三组分与含水量、灰分含量和总可溶性固形物有关。基于聚类分析,将基因型分为与PCA组一致的3组。提出了不同群体基因型间的杂交,以创造新的杂交种和品种,增加番茄种质多样性。通过杂交这些基因型,可以改善形态和化学性状的重组。
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来源期刊
Ratarstvo i Povrtarstvo
Ratarstvo i Povrtarstvo Agricultural and Biological Sciences-Soil Science
CiteScore
0.80
自引率
0.00%
发文量
4
审稿时长
4 weeks
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