Data/hora: 13/06/2024 00:40:27

Provedor de dados: | 21
País: | Germany
Título: | Spring barley grain quality changes in conventional and organic growing conditions
Autores: | Kokare, A.; Legzdina, L.; Lammerts van Bueren, Edith T.
Data: | 2010-12
Ano: | 2010
Palavras-chave: | Breeding; Genetics and propagation Crop health; Quality; Protection.
Resumo: | While breeding for organic farming it is necessary to identify the most appropriate  growing conditions in which to perform the selection process. Soil fertility, crop  management, yield level and other factors may vary very much between each organic  farm, and between organic farms and research institutions where the selection is usually  performed. Since plant breeding requires considerable input of resources and the market  for organic varieties is limited, it is essential to find the most appropriate selection  conditions that will provide acceptable varieties for organic farms.  Spring barley breeding lines selected from two cross combinations (Primus/Idumeja and  Anni/Dziugiai) at two distinctive organic and two conventional locations were used in the  study. The organic location 1 was situated in a research field of the plant breeding  institute (with green manure as fertilizer), the organic location 2 included an organic  farmer’s field (with stable manure as fertilizer), the conventional location 1 was located  in a barley breeding field (with medium level of mineral fertilizer input) and the  conventional location 2 in a seed production field of the institute (with high mineral  fertilizer input).  Selection of the breeding lines was done under the respective growing conditions starting  from F3 generation. Most appropriate lines for growing in organic farming were selected  at all 4 environments. Selected breeding lines were evaluated in F5 (n=20-23 per cross  combination, without replications) and F6 generations (n=10 per cross combination, 3  replications).  Correlations between barley traits and the environments and cross combinations will be  compared in the presentation.  The analysis of the correlation between grain yield and observed plant traits of F5 lines  indicated that tendencies between the lines obtained from both cross combinations as well  as between the environments were dissimilar in most of the cases. Soil shading  (evaluated at early stem elongation stage) correlated positively with grain yield in all  cases; the correlation was always significant for lines from the cross Primus/Idumeja, but  only at the conventional location 2 for Anni/Dziugiai lines  (p&lt;0.05). A significant positive correlation between grain yield and plant development  speed at tillering stage as well as between yield and plant height at the beginning of stem  elongation was found for Primus/Idumeja lines at both organic  locations and at the conventional location 1 (p&lt;0.05). Plant height before harvest did not  correlate significantly with yield under organic conditions which is in contradiction with  some other studies. There was a tendency for planophyle growth  habit to correlate positively with yield under organic and conventional conditions for  lines from both cross combinations.  The analysis of correlation of the F6 lines will be included in the presentation.  This study was performed with financial support of EEA grant EEZ08AP-27and  European Social Fund co-financed project  2009/0218/1DP/1.1.1.2.0/09/APIA/VIAA/099.
Tipo: | Conference paper, poster, etc.
Idioma: | Inglês

Identificador:

http://orgprints.org/19198/1/2468.pdf

Kokare, A.; Legzdina, L. and Lammerts van Bueren, Edith T. (2010) Spring barley grain quality changes in conventional and organic growing conditions. [Kwaliteit van zomergerst verandert onder conventionele en biologische teeltomstandigheden.] Poster at: Breeding for Resilience: a strategy for organic and low-input farming systems? Eucarpia 2nd Conference of the Organic and Low-Input Agriculture section, Paris, 1 - 3 december 2010.

Editor: | INRA and ITAB
Relação: | http://orgprints.org/19198/
Formato: | application/pdf