Assessment of Tomato Recombinant Lines in Conventional and Organic Farming Systems for Productivity and Fruit Quality Traits

Agronomy

Ioannis Mylonas¹  IliasD. Avdikos²  Rafail Tagiakas²  AthanasiosG. Mavromatis²  IoannisN. Xynias³ 

[1] Institute of Plant Breeding and Genetic Resources, Hellenic Agricultural Organization–“Demeter”, 57001 Thessaloniki, Greece;Laboratory of Genetics and Plant Breeding, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;School of Agricultural Sciences, University of Western Macedonia, Terma Kontopoulou, 53100 Florina, Greece;

关键词: inbred vigor;    heterosis;    hybrid vigor;    tomato;    recombinant lines;    low inputs;   

DOI  :  10.3390/agronomy11010129

来源: DOAJ

【 摘 要 】

It is estimated that more than 95% of organic agriculture is based on crop cultivars that were bred for the conventional high-input sector. Most selections were made through conventional breeding programs and lack important traits required under organic and low-input conditions. Hybrids are the most common type of cultivars used in tomato because of heterosis. In tomato, continuous selfing enabled homozygosity to exploit favorable additive genes, resulting in the so-called inbred vigor. This paper presented the possibility to express inbred vigor at a level equal to or greater than hybrid vigor in tomato when cultivated under organic low input conditions. The evaluation of the recombinant lines produced through classical reverse breeding from four F₁ single cross hybrids was done at low- and high-input farming systems. The results show that, following the appropriate breeding process in early generation selection and under low-input conditions, it is possible to produce recombinant lines, demonstrating inbred vigor in yield potential and fruit quality. These genetic materials can stand as new dynamic cultivars intended for cultivation in organic, low-input, or high-input conditions, depending on their performance in different farming systems at the later stages of evaluation.

【 授权许可】

Unknown