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| 1 | 垂直方向磷素竞争对杉木根系生长及生物量分配的影响显示文摘针对自然环境中有效磷养分主要分布于土壤表层而容易导致植物根系激烈竞争的问题,选择同一杉木(Cunninghamia lanceolata)无性系幼苗为研究对象,采用水平方向空间狭小而垂直方向空间大的室内盆栽模拟装置,以单株种植为对照,构建双株种植的竞争处理,通过设置3个供磷水平:不供磷处理(0 mg/kg KH_2PO_4)、低磷处理(6 mg/kg KH_2PO_4)和正常供磷处理(12 mg/kg KH_2PO_4),采用破坏性试验方式收获,分别在试验的前期(50 d)、中期(100 d)和后期(150 d)测定不同处理条件下杉木幼苗根系生物量与根系形态的变化,研究邻株杉木根系在垂直方向上对有限磷素资源的竞争策略。结果表明:竞争处理和供磷水平对杉木幼苗根系长度、平均直径等形态指标的影响存在交互作用(P<0.05),对杉木幼苗生物量分配、比根长等指标的影响均不存在明显的交互作用(P>0.05)。竞争处理中杉木根系形态增量均明显高于非竞争处理的单株幼苗,且随着胁迫时间的增加,根系形态增量均呈现显著的上升趋势,其中在胁迫中期和后期的增量明显高于前期,且邻株竞争处理明显提高了杉木的比根长,提升了根系觅磷的能力;随着供磷水平的提高,根表面积和根体积增量大体上呈现先上升后下降的趋势。与非竞争处理相比,竞争条件下杉木地上部生物积累量差异不明显,而根系生物量、根冠比均低于非竞争处理的单株幼苗。 | 许静静 李琦 吴文景 Rashid Muhammad Haroon U 马祥庆 吴鹏飞 | 2019 | 生态学报2019，39，6： | 11 |
| 2 | Physiological and biochemical appraisal for mulching and partial rhizosphere drying of cotton显示文摘Water is the main factor for the healthy life of plant.One of the main negative effects of climate change is the increasing scarcity of water that is lethal for plant.Globally,for water deficit regions(arid and semi-arid),drought is the main factor responsible for low production of agriculture,especially for cotton.Great efforts have been and are being made to find alternatives to water saving practices.This study aimed to examine the effects of partial rhizosphere drying(PRD,half of the root system irrigated at one event,and the other half irrigated in the next event,and so on)with and/or without various mulching treatments on physiological and biochemical traits of cotton.To explore this objective,we laid out experiments in completely randomized design with factorial arrangement in the Islamia University of Bahawalpur,Pakistan in 2016.Two factors included were four mulching treatments(M0,no mulching;M1,black plastic mulching;M2,wheat straw mulching;and M3,cotton sticks mulching)and two irrigation levels(I0,control(full irrigation);and I1,PRD).Fisher's analysis of variance among means of treatments was compared using least significant difference test at 5% probability level.Results revealed that the maximum plant height,leaf area,leaf gas exchange(photosynthetic rate and stomata conductance),chlorophyll,proline and total sugar contents,and enzyme activities were higher under M2 than under other three mulching treatments.As for irrigation levels,higher values of plant height,photosynthesis and water related parameters(leaf water potential,leaf osmotic potential,leaf turgor potential,etc.)were recorded.Contents of total sugar and proline and activities of antioxidant enzymes were significantly higher in PRD-treated plants than in control plants.It was concluded that combined application of PRD and mulching was more effective than the rest of the treatments used in the experiment.Similar study can be conducted in the field by applying irrigation water in alternate rows in semi-arid regions. | Rashid IQBAL Muhammad A S RAZA Muhammad F SALEEM Imran H KHAN Salman AHMAD Muhammad S ZAHEER Muhammad U ASLAM Imran HAIDER | 2019 | Journal of Arid Land2019，11，5： | 2 |
| 3 | Structural, electronic, and optical properties of ZnO_(1-x)Se_x alloys using first-principles calculations显示文摘The structural, electronic, and optical properties of binary ZnO, ZnSe compounds, and their ternary ZnO 1-x Se x alloys are computed using the accurate full potential linearized augmented plane wave plus local orbital (FP-LAPW + lo) method in the rocksalt (B1) and zincblende (B3) crystallographic phases. The electronic band structures, fundamental energy band gaps, and densities of states for ZnO 1-x Se x are evaluated in the range 0 ≤ x ≤ 1 using Wu-Cohen (WC) generalized gradient approximation (GGA) for the exchange-correlation potential. Our calculated results of lattice parameters and bulk modulus reveal a nonlinear variation for pseudo-binary and their ternary alloys in both phases and show a considerable deviation from Vegard's law. It is observed that the predicted lattice parameter and bulk modulus are in good agreement with the available experimental and theoretical data. We establish that the composition dependence of band gap is semi-metallic in B1 phase, while a direct band gap is observed in B3 phase. The calculated density of states is described by taking into account the contribution of Zn 3d, O2p, and Se 4s, and the optical properties are studied in terms of dielectric functions, refractive index, reflectivity, and energy loss function for the B3 phase and are compared with the available experimental data. | Muhammad Rashid Fayyaz Hussain Muhammad Imran S A Ahmad N A Noor M U Sohaib S M Alay-e-Abbas | 2013 | Chinese Physics B2013，22，8： | 2 |
| 4 | Production ofsunflower oil methyl esters by optimized alkali-catalyzedmethanolysis显示文摘 | Rashid U Anwar F Moser B R Ashraf S | 2008 | Biomass and Bioenergy2008，32，12： | 1 |
| 5 | Optimization of polyol ester production by transesterification of Jatropha-based methyl ester with trimethylolpropane using Taguchi design of experiment显示文摘 | Kamil R N M Yusup S Rashid U | 2011 | Fuel2011，90，6： | 1 |
| 6 | Production of biodiesel through optimized alkaline- catalyzed transesterification of rapeseed oil显示文摘 | Rashid U Anwar F | 2008 | Fuel2008，87，： | 1 |
| 7 | Defining and managing overactive bladder: disagreement among the experts显示文摘 | Lee U J Scott V C S Rashid R | 2013 | Urology2013，81，2： | 1 |
| 8 | Design of OMC-MAC: an opportunistic multi- channel MAC with QoS provisioning for distributed cognitive radio networks 显示文摘 | JHA S C PHUYAL U RASHID M M BHARGAVA V K | 2010 | IEEE Transactions on Wireless Communications2010，10，10： | 1 |
| 9 | Seasonal effect of seedling age on the yield of rice 显示文摘 | Khatun A Mollah M I U Rashid I H | 2002 | Pak J Biol Sci2002，5，1： | 1 |
| 10 | Detection and classification of vehicles from video using multiple time-spatial images 显示文摘 | Mithun N C Rashid N U Rahman S M | 2012 | IEEE Trans on Intelligent Transportation Systems2012，13，3： | 1 |
| 11 | Design of OMC-MAC: an opportunistic multi-channel MAC with QoS provisioning for distributed cognitive radio networks显示文摘 | JHA S C PHUYAL U RASHID M M | | IEEE Transactions on Wireless Communications0，10，10： | 1 |
| 12 | Okra ( Hibiscus es- culentus) seed oil for biodiesel production 显示文摘 | Anwar F Rashid U Ashraf M | 2010 | Applied Energy2010，87，： | 1 |
| 13 | Tuberculous tenosynovitis : a cause of Carpal Tunnel Syndrome 显示文摘 | RASHID M SARWAR S U HAQ E U | 2006 | J Pak Med Assoc2006，56，3： | 1 |
| 14 | Differential response of pea (Pisum sativum L.) genotypes to salt stress in relation to the growth, physiological attributes antioxidant activity and organic solutes显示文摘 | Shahid M A Balal R M Pervez M A Abbas T Ashfaq M Ghazanfar U Afzal M Rashid A Garcia-Sanchez F Mattson N S | 2012 | EN2012，，5： | 1 |
| 15 | Production of biodiesel through optimized alkaline-catalyzed transesterification of rapeseed oil显示文摘 | Rashid U Anwar F | 2008 | Fuel2008，87，3： | 1 |
| 16 | Correlation of geneand mediator expression with clinical endpoints in anacute interleukin-1beta-driven model of joint pathol-ogy显示文摘 | Scott I Midha A Rashid U | 2009 | Osteoarthritis Cartilage2009，17，6： | 1 |
| 17 | Design of OMC-MAC: an opportunistic multi-channel MAC with QoS provisioning for distributed cognitive radio networks显示文摘 | JHA S PHUYAL U RASHID M | 2011 | IEEE Transactions on Wireless Communications2011，10，10： | 1 |
| 18 | Morin- ga oleifera oil: a possible source of biodiesel显示文摘 | RASHID U ANWAR F MOSER B R | 2008 | Bioresource Technology2008，99，17： | 1 |
| 19 | Production of biodiesel through optimized alkaline-catalyzed transesterification of rapeseed oil 显示文摘 | Rashid U Anwar F | 2008 | Fuel2008，87，： | 1 |
| 20 | Factors effeting the absolute bioavaibility of nifedipine 显示文摘 | Rashid TJ Martion U Clarke H | 1995 | Br J Clin pharmacol1995，40，1： | 1 |
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