Soybean yield under water deficit conditions
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2013, Vol 3, Issue 2
Abstract
Drought stress is the main environmental factor that limiting crops growth and productivity in Iran. Therefore, in order to evaluate effects of water deficit on yield and yield components of soybean, an experiment was performed in the research field of the Islamic Azad University of Kermanshah, Iran. Response of four soybean cultivars at four irrigation regimes investigated based on randomized complete block design with three replications. At the end of growth season, ten plants were selected randomly from each plot and then final yield and yield component were measured. The results of this experiment show that there are significant differences among cultivars in yield and yield components at different irrigation regimes. The lowest values of grain and biological yield were obtained under condition in which water stress occurred in R1 that indicating the importance and sensitivity of this stage in plant life cycle. Also, number of pod and seed per plant decreased when that withholding irrigation occurred at the early of flowering stage. Withholding irrigation at seed-filling stage had the most effects on reducing seed weight. Therefore, the lowest 100-seed weight per plant was obtained when withholding irrigation at R6. The results of path coefficient analysis were shown that seed/plant and seed weight had high and positive direct effects on seed yield. In addition, Withholding irrigation at R3 had more effect on reducing pod and seed dry weight.
Authors and Affiliations
Siros Ekhtiari, Soheil Kobraee, Keyvan Shamsi
Keywords
Related Articles
- EP ID EP37316
- DOI -
- Views 212
- Downloads 0
Assessment of selected culture media for competent growth characteristics of Ceratocystis manginecans (Cause of Mango Sudden Death)
Comprehensive and critical facts of aspects which influence patterns of growth and nutrition of the fungi is precondition for research related to the relationship of host and pathogen. A number of media compositions like...
Differential allelopathic effect of nine Haplophyllum tuberculatum growth forms through germination bioassay
The main objective of the present study was to analyze and discriminate among nine growth forms (GF) of Haplophyllum tuberculatum collected from six natural sites along the Mediterranean coastal desert of Egypt by appl...
Effect of applications of superabsorbent and drought stress on electrical conductivity, number of seed, diameter of head and percent of protein in sun flower
Sunflower is the most important oil crop in Serbia as well as in some other parts of the world. Sunflower is most sensitive to water deficit stress in its flowering and seed-maturity stages. On the other hand, flower in...
Comparison of plant species indices under wildlife and livestock grazing site
Vegetation changes in terms of specific plant or family can determine vegetation composition, rangeland condition, grazing pressure and herbivores food preference. Therefore, it can be a base for ecosystem planning and r...
Ecologic evaluation of cypress (Cupresuss sempervirens L.var.horizontalis) plantation in Abas Abad of Behshahr
The 26th years pure stand of cupresuss sempervirens with 40 ha and 2*2 m distance among trees in Abas Abad was selected to study increment of cupresuss sempervirens. The 100*75 m net and random-systematic method was us...