Cadmium-Induced Decrease of Water Stress Resistance in Bush Bean Plants (Phaseolus vulgaris L. cv. Contender) I. Effects of Cd on Water Potential, Relative Water Content, and Cell Wall Elasticity

Legume crops are often grown in drought-prone areas, and subjected to water stress. Greater understanding of drought tolerance in legumes and the use of physiological traits in breeding programs would likely provide high returns. An experiment was conducted comparing the response of two legume crops, common bean (Phaseolus vulgaris L.) and mungbean (Vigna radiata (L.) Wilczek), to seven watering regimes, in order to identify traits and timing of observations that are inexpensive and relatively easy to phenotype. Gas exchange measurements were conducted before and after selected waterings, and plants were harvested at flowering for the determination of leaf area, biomass, relative water content, and water potential. Results demonstrated that mungbean exhibited a conservative use of water through lower leaf area and a limit to maximum transpiration under non-limiting soil moisture conditions, as well as a greater partitioning of biomass into stems rather than leaves. Mungbean also maintained higher photosynthesis than common bean in low soil moisture conditions, and maintained higher relative water content than common bean. We suggest investigations into stem water-soluble carbohydrates would be worthwhile.

Download Full-text

Role of potassium solublizing bacteria on nutrients uptake in red bean (Phaseolus vulgaris L. cv. Goli) under water deficit condition

Legume Research - An International Journal ◽

10.18805/lr-337 ◽

2017 ◽

Author(s):

Saeid Chavoshi ◽

Ghorban Nourmohamadi ◽

Hamid Madani ◽

Hossein Heidari Sharif Abad ◽

Mojtaba Alavi Fazel

Keyword(s):

Phaseolus Vulgaris ◽

Water Content ◽

Relative Water Content ◽

Full Irrigation ◽

Phaseolus Vulgaris L ◽

Flowering Stage ◽

Plant Yield ◽

Relative Water ◽

Chlorophyll Index ◽

Red Bean

This experiment was carried out to evaluate the effect of halt irrigation and bio fertilizer on plant yield, seed nutrients content, relative water content (RWC) and chlorophyll index (SPAD) of Goli genotype of red bean (Phaseolus vulgaris L.), based on split plot design with three replications during two years of 2014-2015 at Arak, Iran. Halt irrigation was in main plots by four levels of control (full irrigation), halt irrigation in vegetative stage, at flowering stage and pod filling stage and four bio fertilizer were in sub plots, including: control (no bacteria), Phosphorus Solublizing bacteria (PSB), potassium solublizing bacteria (KSB) and concurrent use both of PSB and KSB. Analysis of variance showed that no significant effect of years but the effect of halt irrigation treatments was significant on plant yield, N, P, K and Zn percentage of seed, relative water content (RWC) and chlorophyll index (SPAD). Halt irrigation reduced plant yield by 67.81% in comparison to full irrigation during flowering stage. In the study, physiological characteristics such as RWC, N, P, K and Zn contents were also reduced significantly with halt irrigation at flowering stage than its effects on other stages of the crop. Also other characteristics was significantly reduced in this study with halt irrigation that this reduction in flowering stage was more than other stages.

Download Full-text

Effect of drought stress on the osmotic adjustment, cell wall elasticity and cell volume of six cultivars of common beans (Phaseolus vulgaris L.)

European Journal of Agronomy ◽

10.1016/j.eja.2006.08.003 ◽

2007 ◽

Vol 26 (1) ◽

pp. 30-38 ◽

Cited By ~ 136

Author(s):

J.P. Martínez ◽

H. Silva ◽

J.F. Ledent ◽

M. Pinto

Keyword(s):

Cell Wall ◽

Drought Stress ◽

Phaseolus Vulgaris ◽

Cell Volume ◽

Osmotic Adjustment ◽

Common Beans ◽

Phaseolus Vulgaris L ◽

Cell Wall Elasticity

Download Full-text

Some metabolic responses of bush bean plants to a subherbicidal concentration of certain s-triazine compounds

Canadian Journal of Botany ◽

10.1139/b70-321 ◽

1970 ◽

Vol 48 (12) ◽

pp. 2213-2217 ◽

Cited By ~ 21

Author(s):

B. Singh ◽

D. K. Salunkhe

Keyword(s):

Nitrate Reductase ◽

Nitrate Reduction ◽

Adenosine Triphosphatase ◽

Acid Synthesis ◽

Controlled Environment ◽

Transaminase Activity ◽

Starch Phosphorylase ◽

Phaseolus Vulgaris L ◽

Bean Plants ◽

Bush Bean

A solution containing 0.5 p.p.m. of atrazine, simazine, igran, or GS-14254 with 0.2% triton-B 1956 was applied to the foliage of 11-day-old seedlings of bush beans, Phaseolus vulgaris L. cultivar Tender-green, growing on vermiculite in a controlled environment. The activities of nitrate reductase, glutamic-pyruvic transaminase, α-amylase, starch phosphorylase, and adenosine triphosphatase were determined 5,10, and 20 days after treatment. In general, the activity of each of the five enzymes was stimulated by the treatment. The results suggest that protein increase following the application of.s-triazines to bean plants may stem in part from an enhanced rate of amino acid formation resulting from the induced increment in nitrate reductase and transaminase activity. The application of these chemicals also creates a metabolic condition favorable for greater use of carbohydrates needed for nitrate reduction and protein synthesis, and as a source of organic acid synthesis.

Download Full-text