Journal of Stress Physiology & Biochemistry, Vol. 5, No. 3,
2009, pp. 13-21 ISSN 1997-0838
Original Text Copyright (cc) 2009 by Torres-García, Escalante-Estrada,
Rodríguez-González, Ramírez-Ayala, Martínez-Moreno
ORIGINAL
ARTICLE
Data source : Google Scholar
QueryDate : 2016-12-24
Cites : 5+ 2
EXOGENOUS APPLICATION OF GROWTH REGULATORS IN SNAP
BEAN UNDER WATER AND SALINITY STRESS
Jesús R. Torres-García1; J. A. Escalante-Estrada1;
M. T. Rodríguez-González1; C. Ramírez-Ayala2; D.
Martínez-Moreno3
Department of Botany1,
Hydrosciences2, Colegio de Postgraduados, Montecillo, México.
School Biology, Benemérita Universidad Autónoma de Puebla, México.3 E-mail: torres.jesus@colpos.mx
Received May 28, 2009
Salinity and moisture limiting crop productivity due an
imbalance between concentrations of auxins, gibberellins, cytokinin,
ABA and ethylene. applications of growth regulators to alleviate
salinity stress can be an economic and safe alternative to environment.
The objective of this study was to determine the effect of salinity (0,
1000 and 2000 ppm of NaCl), soil moisture (30 and 60%) and exogenous
application of growth regulators (control, 5 mL L-1 at the
Beginning of flowering and 5 mL L-1 in vegetative stage +
Beginning of flowering) and the combinations of three factors in snap
bean (Phaseolus vulgaris L.).
Concentrations of 2000 ppm reduced biomass and pod production in 35.5
and 45%, respectively. The humidity had no effects in biomass
production and pod number. With the application of growth regulators in
the vegetative stage + beginning of flowering, the weight and number of
pods were increased. The greater biomass and yield was observed with 0
ppm, 60% humidity and application of growth regulators in the beginning
of flowering. However, with: 1000 ppm, 30% of humidity and application
in B. flowering, the biomass production was statistically similar. Our
conclusion suggests that the application of growth regulators can be
economical and easily applicable for farmers.
Key words:
gibberellins, auxins, cytokinins, stress resistance, Phaseolus vulgaris L
