Jingyi Wang¹, Jing Sun^1,*, Dehua Liu¹, Xiang Zhu¹

FDMP-Fluid Dynamics & Materials Processing, Vol.15, No.5, pp. 613-625, 2019, DOI:10.32604/fdmp.2019.08782

Abstract One of the important indicators of shale gas reservoir excavation is capacity evaluation, which directly affects whether large-scale shale gas reservoirs can be excavated. Capacity evaluation is the basis of system analysis and dynamic prediction. Therefore, it is particularly important to conduct capacity evaluation studies on shale gas horizontal wells. In order to accurately evaluate the horizontal well productivity of shale gas staged fracturing, this paper uses a new method to evaluate the productivity of Fuling shale gas. The new method is aimed at the dynamic difference of horizontal wells and effectively analyzes the massive data, which are factors affecting… More >

Zhou C^1,2, C Busso³, J Liu¹, YG Yang¹, Y Sun¹, YZ Fang¹, QQ Zhang¹, YB Zhou^1,4, YN Wang^1,4, Z Zhang^4,5, ZW Wang⁶, YF Yang²

Phyton-International Journal of Experimental Botany, Vol.85, pp. 125-130, 2016, DOI:10.32604/phyton.2016.85.125

Abstract The objective of this study was to analyze the relationships between total aboveground plant biomass versus altitude, latitude, longitude, mean annual temperature, mean annual precipitation, and species diversity. Simple linear regression analysis was used to study these relationships. Results showed that altitude was significantly, positively (R²= 0.038, P<0.01) related with total plant aboveground biomass. Meanwhile, when longitude (R²= 0.124, P<0.001) and latitude (R²= 0.221, P<0.001) increased, total aboveground biomass decreased. The relationship between biomass and mean annual precipitation was significantly, positively linear (R²= 0.149, P<0.001). Mean annual temperature was significantly, negatively correlated with biomass (R²= 0.145, P<0.001). The relationship between… More >

Valdés Oyervides FJ¹, C Rivas Morales², A Benavides Mendoza¹, MA Núñez González², J Verde Star², A Oranday Cárdenas², V Robledo Torres²

Phyton-International Journal of Experimental Botany, Vol.81, pp. 191-198, 2012, DOI:10.32604/phyton.2012.81.191

Abstract Four dynamic conditions to evaluate the effects of stress on production of biomass, essential oils, Thymol, carvacrol and proline accumulation in Lippia graveolens H.B.K. were investigated under greenhouse conditions. A bifactorial design assessed four environmental conditions (factor B): commercial nutritive solution (B0); Water (B1); moderate stress (B2), and intermediate (B3) stress nested under (Factor A) salinity (NaCl) and ion concentration (Cu²⁺) and (Fe²⁺) stresses. Average production of fresh weight and number of leaves were reduced under NaCl and both ion concentration conditions. However, there were no significant differences on average for the four environments. The amounts of essential oils were… More >

Luján-Rangel¹ R, E Olivares-Sáenz², RE Vázquez-Alvarado², L Garza-Ocañas³, O Torres-Alanís³

Phyton-International Journal of Experimental Botany, Vol.76, pp. 61-77, 2007, DOI:10.32604/phyton.2007.76.061

Abstract Karwinskia parvifolia (Kp) and Karwinskia humboldtiana (Kh) are poisonous plants of the rhamnacea family. Toxicological and clinical studies performed with one of the compounds present in the fruit [peroxisomicine A1 (PA1)] suggest its possible pharmacological usefulness in the treatment of certain types of cancer. This is why these plants are cultivated: to increase their productivity of PA1. We studied the effects of nitrogen and species on seed viability. The germination curve was determined for Kp with (Kp-WN) and without (Kp-NN) nitrogen, and for Kh without nitrogen (Kh-NN) using the probit model. This is characterized by the probability of germination in… More >

Muhammad Zafar-ul-Hye^1,*, Tariq Shahzad Bhutta¹, Muhammad Shaaban¹, Shahid Hussain¹, Muhammad Farooq Qayyum¹, Umar Aslam¹ and Zahir Ahmad Zahir²

Phyton-International Journal of Experimental Botany, Vol.88, No.2, pp. 119-129, 2019, DOI:10.32604/phyton.2019.06570

Abstract Soil salinity affects the growth and yield of crops. The stress of soil salinity on plants can be mitigated by inoculation of plant growth promoting bacteria (PGPR). The influence of PGPR inoculation on wheat (Triticum aestivum L.) crop productivity under salinity stress has not been properly addressed so far. Therefore, the present study was conducted to investigate the effects of various PGPR strains (W14, W10 and 6K; alone and combined) at several growth attributes of wheat plant under different soil salinity gradients (3, 6 and 9 dS m-1). The growth attributes of wheat (height, roots, shoots, spikes, grains quality, biological… More >