Biologia plantarum 2010, 54:785-788 | DOI: 10.1007/s10535-010-0143-7

The effects of brassinosteroids on photosynthetic parameters in leaves of two field-grown maize inbred lines and their F1 hybrid

M. Kočová1, O. Rothová1, D. Holá1,*, M. Kvasnica2, L. Kohout2
1 Faculty of Science, Charles University in Prague, Prague, Czech Republic
2 Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague, Czech Republic

The effect of foliar spray with 10-12 M aqueous solutions of 24-epibrassinolide or a synthetic androstane analogue of castasterone on the activity of photosystem (PS) 1, the Hill reaction activity, the content of photosynthetic pigments and the specific leaf mass was examined for three different leaves developed after brassinosteroid (BR) treatment in two inbred lines of field-grown maize and their F1 hybrid. The brassinosteroids significantly affected neither the efficiency of photosynthetic electron transport, nor the content of chlorophylls or carotenoids.

Keywords: carotenoids; chlorophylls; 24-epibrassinolide; heterosis; Hill reaction; photosystem 1
Subjects: brassinosteroids; carotenoids; chlorophyll a,b; leaf growth; maize; photosystems (PS 1, PS 2); Zea mays

Received: August 7, 2009; Accepted: February 15, 2010; Published: December 1, 2010Show citation

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Kočová, M., Rothová, O., Holá, D., Kvasnica, M., & Kohout, L. (2010). The effects of brassinosteroids on photosynthetic parameters in leaves of two field-grown maize inbred lines and their F1 hybrid. Biologia plantarum, 54(4), 785-788. doi: 10.1007/s10535-010-0143-7.
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