Abstract
Ethephon and Aventrol were used as tools to provoke the processes taking part in the formation of rape seed yield and quality. Investigations on spring rape (Brassica napus L.) cultivars ‘Terra’ and ‘Landmark’ were carried out from 2008–2010. Ethephon (10 mM) and Aventrol (1 l/ha — pinolene 960 g/l) were used on different plant growth stages: BBCH-62–64 and BBCH-72–74, BBCH-80–82, respectively. Impact of ethephon manifested itself as activation of ethylene evocation by siliqua and a slight activation of growth of siliqua dehiscence zone. Siliqua cell plasmalemma and tonoplast H+-ATPases activation under the influence of ethephon occurred but did not lead to the destruction of transmembrane electrochemical potential. Extra seed yield and crude fat yield increased; tendency towards a lowering of the saturated/unsaturated fatty acid ratio was observed. Under the influence of Aventrol the dehiscence zone of siliqua was more closed when compared to the control and the ethephon treated variants, seed loss was significantly lowered and transmembrane cation transport was not damaged. The seed yield increased, and this was due to the accumulation of extra crude fat. Aventrol did not change the fatty acid content in rape seed oil. The positive impacts of ethephon and Aventrol for spring rape seed yield formation and possible mechanisms are discussed.
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Darginavičienė, J., Novickienė, L., Gavelienė, V. et al. Ethephon and Aventrol as tools to enhance spring rape productivity. cent.eur.j.biol. 6, 606–615 (2011). https://doi.org/10.2478/s11535-011-0033-9
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DOI: https://doi.org/10.2478/s11535-011-0033-9