Euphytica

, Volume 201, Issue 3, pp 389–400

Evaluation of cauliflower genebank accessions under organic and conventional cultivation in Southern Germany

  • Eltohamy A. A. Yousef
  • Christian Lampei
  • Karl J. Schmid
Article

DOI: 10.1007/s10681-014-1225-y

Cite this article as:
Yousef, E.A.A., Lampei, C. & Schmid, K.J. Euphytica (2015) 201: 389. doi:10.1007/s10681-014-1225-y

Abstract

In recent years, public attention increased towards products from organic farming due to their presumed higher quality and health benefits. Frequently, organic farming is characterized by lower yields than conventional farming. One reason may be the use of varieties that were bred for conventional cultivation and are not adapted to organic farming. This raises the question if high yielding varieties differ in their performance under different cultivation methods allowing the selection of varieties with superior performance in organic cultivation. To answer this question and to identify suitable genotypes we evaluated a collection of 178 cauliflower genebank accessions under organic and conventional farming conditions. Two traits (curd width and time to budding) were evaluated for mean and stability. We observed a significant genotype × cultivation method interaction because genotypes differed in their performance between cultivation methods. Of the two traits investigated, curd width showed a lower heritability (\(H_{\text{org}}^{2}\) = 0.26, \(H_{\text{conv}}^{2}\) = 0.37) and low genotypic correlation between organic and conventional systems, compared to days to budding that show high heritability (\(H_{\text{org}}^{2}\) = 0.86, \(H_{\text{conv}}^{2}\) = 0.87) and a high correlation between the two farming systems. Our results demonstrate that the selection for curd width should be preferably conducted under organic conditions, whereas selection for number of days can be carried out under organic or conventional conditions. The evaluation of genotypes at both environments identified genotypes that may be used as parental lines for breeding under organic conditions.

Keywords

Cauliflower Organic farming Genotype-by-environment interaction Heritability Stability 

Supplementary material

10681_2014_1225_MOESM1_ESM.doc (270 kb)
Supplementary material 1 (DOC 269 kb)
10681_2014_1225_MOESM2_ESM.xlsx (57 kb)
Supplementary material 2 (XLSX 57 kb)

Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Eltohamy A. A. Yousef
    • 1
    • 2
  • Christian Lampei
    • 1
  • Karl J. Schmid
    • 1
  1. 1.Department of Crop Biodiversity and Breeding Informatics (350b)University of HohenheimStuttgartGermany
  2. 2.Department of Horticulture, Faculty of AgricultureUniversity of Suez CanalIsmailiaEgypt

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