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Search Results: 1 - 10 of 41889 matches for " PENG Chang-lian "
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Progress in Studies on Plant Responses to Elevated CO2
高浓度二氧化碳对植物影响的研究进展

Zhi-Ying Ou,Chang-Lian Peng,
欧志英
,彭长连

热带亚热带植物学报 , 2003,
Abstract: Recent studies on plant responses to elevated CO 2 is reviewed.Increase in atmospheric CO 2 concentration affects not only global climate but also plant morphology,water use,protein synthesis,photosynthesis,resistance,growth,biomass and so on.Elevated CO 2 has effects of promoting the growth of plant roots and seedlings,making the leaf thick,lowering the stomatal density,stomatal conductance and transpiration,enhancing the water use efficiency,crop yield and biomass,intensifying the biosynthesis of ethylene and antioxygen competence.High CO 2 concentration together with other environmental factors affect plants.Plants with different photosynthetic pathways(C 3 ,C 4 and CAM)and different vegetation types(natural and artificial vegetation)exhibite different responses to high CO 2 concentration.Short-term exposure to elevated CO 2 enhances photosynthesis while long-term inhibits.Experimental con-ditions such as air pressure,temperature,water availability,nutrition status,oxygen,light intensity even growth space also have great effect on the results of the experiments.
Effects of Simulated Acid Rain on Seed Germination and Seedling Growth of Three Crops
模拟酸雨对农作物种子萌发和幼苗生长的影响

PENG Cai-xi,PENG Chang-lian,LIN Gui-zhu,WEN Da-zhi,
彭彩霞
,彭长连,林桂珠,温达志

热带亚热带植物学报 , 2003,
Abstract: The responses of seed germination and seedling growth of rice (Oryza sativa cv. Yueza 223), wheat (Triticum aestivum cv. Gaoyun 5) and maize (Zea mays cv. Shangyu 2) to simulated acid rain were investigated by dipping seeds into solution of pH2.5, 4.5 and 5.6 made from mixtures of H2SO4 and HNO3, and into distilled water (control). Different pH (2. 5, 4.5, 5.6) simulated acid rain showed no effect on seed germination of rice and wheat, but significant inhibition effect was found in the germination of maize. Seedling growth of rice , wheat and maize was inhibited by simulated acid rain. Biomass and contents of chlorophyll and ca rotenoids decreased to some extent in all the three crop species grown under simulated aci d rain, whereas no obvious changes in Chl a/b was exhibited in these crops. There was little effect on Fv/Fm and photochemical quenching of chlorophyll fluorescence (qP) in leaves of maize grown at pH 4.5 or 5.6 of simulated acid rain, but nonphotochemical quenching of chlo rophyll fluorescence (NPQ) decreased markedly, revealing that non-radiation energy dissi pation in the antenna of photosystem II was possibly damaged under acid rain condition.
Advances in Studies of Photoprotection Mechanism in Plants
植物光破坏防御机制的研究进展

YANG Cheng-Wei,PENG Chang-Lian,CHEN Yi-Zhu,
阳成伟
,彭长连,陈贻竹

植物学报 , 2003,
Abstract: Plant has evolved numerous photoprotective mechanisms to protect the photosynthetic apparatus from light-induced damage. The purpose of this article is to review briefly on recent studies of the photoprotective mechanism with regard to the triplet chlorophyll valve, energy dissipation and chlororespiratory.
Comparison of Physiological Characteristics in Leaves of Amaranthus tricolor L. ' Red flower' and' Green leaf' under High Temperature
高温下花红苋和绿叶苋叶片生理特性变化的比较

SHAO Ling,LIU Guang-ling,LI Yun-ying,PENG Chang-lian,
邵玲
,刘光玲,李芸瑛,彭长连

热带亚热带植物学报 , 2009,
Abstract: 40℃连续6 d处理苋菜(Amaranthus tricolor)两个栽培品种花红苋和绿叶苋,探讨热胁迫下它们生理特性的改变.结果表明:与绿叶苋相比,高温下花红苋叶中可溶性糖和脯氨酸含量明显增加,PPO(多酚氧化酶)和POD(过氧化物酶)活性增强,苋菜红素显著积累.绿叶苋对高温表现敏感,苋菜红素含量在处理2 d后明显降低,膜脂过氧化产物丙二醛和质膜透性均高于花红苋,叶片呈现较明显的氧化漂白症状.与常温对照相比,高温下两种苋菜的总酚含量变化不大.热胁迫下花红苋积累较多的苋菜红素和渗透调节物质,酶活性提高,可能是其对高温逆境具有较好耐受能力的生理基础.
Responses of Jatropha curcas L. seedlings to drought stress.
麻疯树幼苗对干旱胁迫的响应

DOU Xin-yong,WU Guo-jiang,HUANG Hong-ying,HOU Yu-jia,GU Qun,PENG Chang-lian,
窦新永
,吴国江,黄红英,侯雨佳,顾群,彭长连

应用生态学报 , 2008,
Abstract: By adding different concentrations (5%-25%) of polyethylene glycol (PEG) into Hoagland solution to simulate a gradient of drought stress, the photosynthetic characteristics and drought resistance of Jatropha curcas L. seedlings were investigated. The results showed that when treated with lower concentrations (< or = 15%) of PEG, the photosynthetic rate (Pn), stomatal conductance (Gs), and intercellular carbon dioxide concentration (Ci) of the seedlings decreased with increasing PEG concentration, while the chlorophyll fluorescence parameters optimal/maximal quantum yield of PS II (Fv/Fm) decreased slightly and minimal fluorescence (Fo) was almost unaltered. The certain reduction of actual photochemical efficiency of PS II in the light (Phi(PS II)), coefficient of photochemical quenching (qP), and apparent electron transport rate (ETR) was associated with a significant increase in non-photochemical quenching (NPQ), whereas as the PEG concentration was increased to higher than 15%, Ci increased remarkably, Pn, Gs, and WUE had a sustained decrease, while Fv/Fm, Phi(PS II), qP and ETR decreased more significantly, Fo increased rapidly, and NPQ decreased. The reduction of Pn under low concentration PEG was mainly due to stomatal limitation, while that under high PEG concentration was referred to the combination of non-stomatal and stomatal limitation. When the PEG concentration was lower than 20%, Pn decreased but photosynthetic structure was not damaged. The recovery of PS II activity and the survival of plant were found after the severe drought stress was removed 15 days later. It was concluded that Jatropha curcas had stronger tolerance to drought stress.
EFFECT OF AIR POLLUTION ON THE CHLOROPHYLL FLUORESCENCE CHARACTERS OF TWO AFFORESTATION PLANTS IN GUANGZHOU
广州市大气污染对两种绿化植物叶绿素荧光特性的影响

SU Xing,HU Di-Qin,LIN Zhi-Fang,LIN Gui-Zhu,KONG Guo-Hui,PENG Chang-Lian,
苏行
,胡迪琴,林植芳,林桂珠,孔国辉,彭长连

植物生态学报 , 2002,
Abstract: 研究了广州市工业生产区 (CS)、交通枢纽区 (GC)、居民生活区 (GP)和清洁对照区 (BY)等 4个大气采样点栽种的两种绿化植物大叶紫薇 (Lagerstroemiaspeciosa)和白兰 (Micheliaalba)叶绿素荧光特性的差别。综合污染指数表明 4个研究地点的污染程度由大到小的顺序为交通枢纽区 (GC) >工业生产区 (CS) >居民生活区 (GP) >清洁对照区 (BY)。不同污染地点大叶紫薇和白兰叶片的叶绿素含量、Fv/Fm、Fv/Fo,ΦPSⅡ和qP随污染程度的加剧而减少 ,细胞膜渗漏率和qN则上升。白兰这些参数的减少或增加的幅度大于大叶紫薇。用外源NaHSO3 或MV处理这两种植物时 ,细胞渗漏率的增加量和叶绿素含量下降量都是白兰大于大叶紫薇。结果表明绿化植物叶绿体光系统II活性和膜系统完整度的下降与其生长地点污染程度的加剧是一致的 ,大叶紫薇的抗污染能力大于白兰
RESPONSE OF GRACILARIA LEMANEIFORMIS TO NITROGEN AND PHOSPHORUS EUTROPHIC SEAWATER
龙须菜对海水氮磷富营养化的响应

PENG Chang-Lian,WEN Xue,LIN Zhi-Fang,ZHOU Hou-Cheng,CHEN Shao-Wei,LIN Gui-Zhu,
彭长连
,温学,林植芳,周厚诚,陈少薇,林桂珠

植物生态学报 , 2007,
Abstract: 龙须菜(Gracilaria lemaneiformis)是红藻门江蓠属大型海藻,已从山东青岛引种到广东省南澳岛等地栽培多年。深入了解其光合作用与环境条件的关系,对龙须菜的合理栽培及其在环境生态中的生物学作用和扩大其开发利用价值,具有重要的理论和现实意义。该文利用人为配置的不同程度N、P污染海水处理龙须菜,研究其生理生态特性对海水氮磷富营养化的响应。结果表明:处理6d后,龙须菜叶绿素a及3种藻胆蛋白含量和总抗氧化能力在轻度P(P0.2mg·L-1)及重度N、P复合污染(P10mg·L-1,N55mg·L-1)情况下降低。叶绿素荧光参数的变化也表明上述处理对叶绿体PSⅡ造成不利影响,而在轻度N(N0.9mg·L-1)和轻度N、P复合污染(P0.2mg·L-1,N0.9mg·L-1)海水中上述参数则变化不大,表现出龙须菜对轻度N及轻度N、P复合污染的耐受性。该实验条件下,轻度污染处理后,藻体中不因环境N、P浓度升高而富集N、P。表明龙须菜可以作为轻度富营养化海水水体的净化藻类。
Regeneration of An Invasive Weed Ipomoea cairica under Cutting Treatments
入侵杂草五爪金龙在切割处理下的再生能力

WANG Ling,SU Xiao-fen,LI Dong-wen,FENG Zhuo-sen,PENG Chang-lian,TIAN Xin-shan,LI Wei-hua,
王玲
,苏晓芬,李东文,冯卓森,彭长连,田兴山,李伟华

热带亚热带植物学报 , 2011,
Abstract: The survival, main stem length and biomass of Ipomoea cairica cuttings were studied under different light environments and different seasons. The results showed that the survival, main stem length, and biomass of I. cairica gradually decreased and the cutting germination delayed with the cutting length decreased. The survival of I. cairica had no significant difference under sunlight and the understory, and the plant biomass was less in the understory than that under the sunlight. The shorter cuttings were not subject to lengthen the main stem in the understory. The main stem length and biomass in winter were the lowest among four seasons. The longest length of the cuttings which can't regenerate was 4 cm under the sunlight and 5 cm in the understory in spring, 4 cm in summer, 1 cm in autumn, and 1 cm under the sunlight and 3 cm in the understory in winter, respectively. Therefore, it was economical removing method that I. cairica branches were cut into 5 cm length segments in spring, and put them in the understory. Without considering the seasonal and light conditions, less than 1 cm of the cuttings should be selected in order to effectively avoid the regeneration of I. cairica.
Chemical Control of Ipomoea cairica with Three Herbicides and Effect of 2,4-D Butylate on the Environment
三种除草剂对五爪金龙的防除作用及2,4-D丁酯对环境的影响

ZHANG Tai-jie,LUO Jian-ning,LI Wei-hu,LIANG Meng-y,TIAN Xing-shan,PENG Chang-lian,
张泰劼
,罗剑宁,李伟华,梁梦芽,田兴山,彭长连

热带亚热带植物学报 , 2012,
Abstract: Ipomoea cairica is a notorious weed which has serious harm to the environment in South China. The effects of three chemical herbicides, such as 2,4-D butylate, dicamba and fluroxypyr, on control of I. cairica in the field were studied. The results showed that 2,4-D butylate (1.00 mL L-1) could eradicate this weed. The death rate of I. cairica stems and leaves was close to 100% after spraying 2,4-D butylate (1.00 mL L-1) in 20 days. The total biomass also decreased significantly in 60 days (P<0.05), and the growth did not recovery after 90 days. The final control effect of 2,4-D butylate (1.00 mL L-1) on Ipomoea cairica was 99.8%. After spraying dicamba (1.00 mL L-1) and fluroxypyr (1.00 mL L-1) in 40 days, the death rate of I. cairica stems and leaves were 99.0% and 100%, respectively, and the regeneration rate of I. cairica was 10% and 100% after 90 days. A few roots were survival sprayed dicamba (1.00 mL L-1) after 40 days. The herbicide residue analysis showed that 2,4-D butylate could degrade quickly with half-life for 14 days, and it could not be detected in the soil after 80 days. Furthermore, 2,4-D butylate (1.00 mL L-1) was relatively safe to other plants, which could regenerate after spraying 2,4-D butylate in 1 year. Therefore, it suggested that the Ipomoea cairica growth could be good control treated with 1.00 mL L-1 2,4-D butylate.
Allelopathy of 12 Species Including Eupatorium catarium on Bidens alba Seedlings
假臭草等12种植物对白花鬼针草幼苗的化感作用

CHEN Zhi-yun,LIANG Shui-feng,LI Dong-wen,FENG Zhuo-sen,LI Wei-hu,PENG Chang-lian,TIAN Xing-shan,ZHOU Xian-ye,
陈志云
,梁水凤,李东文,冯卓森,李伟华,彭长连,田兴山,周先叶

热带亚热带植物学报 , 2011,
Abstract: 用具有化感作用或潜在抑草活性的12种植物的叶片水浸液对白花鬼针草(Bidens alba)幼苗进行处理,对其幼苗的生长 进行研究,以期筛选出对白花鬼针草生长有较强抑制作用的植物种类。结果表明,12种供体植物叶片水浸液(0.05 g DW mL-1) 均能显著抑制白花鬼针草幼苗的生长(P<0.05),综合化感效应(SE)均为负值(≤-0.2),抑制强度依次为假臭草(Eupatorium catarium)>胜红蓟(Ageratum conyzoides)>海芋(Alocasia macrorrhiza)>水茄(Solanum torvum)>马缨丹(Lantana camara)>薇甘菊(Mikania micrantha)>构树(Broussonetia papyrifera)>南美蟛蜞菊(Wedelia trilobata)>三裂叶薯(Ipomoea triloba)>葛藤(Pueraria lobata)>鸡矢藤(Paederia scandens)>五爪金龙(Ipomoea cairica),其中假臭草叶水浸液浓度仅为0.04 g DW mL-1时就可以使白花鬼针草死亡。假臭草和胜红蓟的茎水浸液也可以显著抑制白花鬼针草的生长(P<0.05),抑制效果略低于叶水浸液。回归分析表明,假臭草叶水浸液浓度与白花鬼针草的生物量等指标之间有线性回归关系(R2>0.85, P<0.001),随着水浸液浓度的增加,白花鬼针草的生物量等指标下降。防除白花鬼针草时使用假臭草和胜红蓟的茎、叶水浸液, 其有效浓度低且资源丰富,可作为白花鬼针草天然除草剂的主要资源植物。
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