[Structure of the photosynthetic apparatus of the bean Vicia faba L. when treated with 6-benzylaminopurine].
The level of endogenous cytokinins changed with growth and development of faba bean (Vicia faba L.) leaves. Typical of juvenile leaves, amounting to 25% of the final leaf size (Smax) was a low content of these plant hormones. The level of cytokinins increased in growing leaves (50% of Smax) and decreased in the leaves that stopped growing. The content of cytokinins in senescent leaves dropped considerably. Exogenous treatment with 6-benzylaminopurine (BAP) had no effect on the structure of terminal phloem; however, it stimulated elongation of mesophyll cells; increases in the area and thickness of leaf blade, amount of photosynthetic pigments, and assimilation potential; and delayed senescence of leaves and defoliation, thereby increasing biomass of the aboveground plant part. It was inferred that BAP had a potential for induction of photosynthetic apparatus development and increase in the yield of faba bean green mass.
Ron'zhina
E S
ES
Kaliningrad State Technical University, Kaliningrad, 236000 Russia.
D000225:Adenine / Q000031:analogs & derivatives* / Q000737:chemistry*; D001593:Benzyl Compounds; D007701:Kinetin; D045322:Photosynthetic Reaction Center Complex Proteins / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D011687:Purines; D031306:Vicia / Q000737:chemistry*
D001593:Benzyl Compounds; D045322:Photosynthetic Reaction Center Complex Proteins; D011687:Purines; D000225:Adenine; C480551:benzylaminopurine; D007701:Kinetin