Effects of plant growth regulators on growth and yields characteristics in adzuki beans (Phaseolus angularis)

Abstract

Using the Jihong 8937 variety of adzuki bean (Phaseolus angularis) as material, two kinds of plant growth regulator (PGRs), PP333 and NAA, were sprayed on the leaves, in order to study their effects on the growing courses, dry matter accumulation and yields. Three concentrations for each of the PGRs were applied, with a naturally growing plant as the control (CK). Results showed that each concentration of PP333 could advance the developmental course but the NAA was reverse. There was no difference between the two kinds of PGRs in the whole growing course. The lower and medium concentrations of PP333 could increase the dry matter accumulation, but the others showed the contrary. The lower and the medium concentrations of these PGRs could increase the contents of dissolvable protein and chlorophyll, but their higher concentrations had inhabiting effects. Our research also found that their lower and medium concentrations could consistently increase this bean’s yield, but the higher concentration reduced it. As a whole, the medium concentration of PP333 was found as the best combination to improve the growth and development of adzuki beans.

Keywords

plant growth regulator / adzuki bean / growing characteristics / physiological index / yield

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Acknowledgements

This research was financially supported by the Hebei Natural Science Foundation Program, China (No. C2009000526) and the Hebei Scientific and Technological Program, China (No. 038201790D).

RIGHTS & PERMISSIONS

2014 Higher Education Press and Springer-Verlag Berlin Heidelberg