Agricultural Sciences in China最新文献

{"title":"Generation and Immunogenicity of a Recombinant Adenovirus Co-Expressing the E2 Protein of Classical Swine Fever Virus and the GP5 Protein of Porcine Reproduction and Respiratory Syndrome Virus","authors":"Hong-yu LI,&nbsp;Yuan SUN,&nbsp;Xing-juan ZHANG,&nbsp;Tian-ming CHANG,&nbsp;Xiang-peng WANG,&nbsp;Fan HE,&nbsp;Jun-hua HUANG,&nbsp;Hua-ji QIU","doi":"10.1016/S1671-2927(11)60178-8","DOIUrl":"10.1016/S1671-2927(11)60178-8","url":null,"abstract":"<div><h3>Abstract</h3><p>Classical swine fever (CSF) and porcine reproduction and respiratory syndrome (PRRS) are both economically important, highly contagious diseases of swine worldwide. To develop an effective vaccine to control these two diseases, we constructed a recombinant adenovirus rAdV-GP52AE2, using a replication-defective human adenovirus serotype 5 as a delivery vector, to co-express the GP5 protein of highly pathogenic porcine reproduction and respiratory syndrome virus (PRRSV) and the E2 protein of classical swine fever virus (CSFV). Foot-and-mouth disease virus (FMDV) 2A peptide was used as a linker between the GP5 and E2 proteins to allow automatic self-cleavage of the polyprotein. The GP5 and E2 genes were expressed as demonstrated by immunofluorescence assay and Western blotting. Immunization of mice resulted in a CSFV-neutralizing antibody titer of 1:128 and a PRRSV-neutralizing antibody titer of 1:16. The lymphoproliferative responses were detected by Cell Counting Kit-8 assay and the stimulation index of CFSV-specific and PRRSV-specific lymphocytes in the rAdV-GP52AE2 group was significantly higher than that in the negative control group. The results show that rAdV-GP52AE2 can induce both effective humoral and cell-mediated immune responses in mice. The protective efficacy of the recombinant virus against CSF was evaluated in immunized rabbits, which were protected from fever induced by challenge with C-strain. Our study provides supporting evidence for the use of FMDV 2A to develop a bivalent genetically-engineered vaccine.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 11","pages":"Pages 1781-1791"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60178-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vertical Price Transmission in the China's Layer Industry Chain: an Application of FDL Approach","authors":"Shi-wei XU,&nbsp;Xiao-xia DONG,&nbsp;Zhe-min LI,&nbsp;Gan-qiong LI","doi":"10.1016/S1671-2927(11)60181-8","DOIUrl":"10.1016/S1671-2927(11)60181-8","url":null,"abstract":"<div><h3>Abstract</h3><p>This paper examines the vertical price relationship between upstream and downstream products in China's layer industry chain by estimating elasticity coefficients of the price transmission. We use cointegration tests, error correction models and finite distributed lag models to analyze vertical price shifts between corn, layer feed, egg-laying chicken and egg prices. With monthly data from 1994 to 2010, our results show that various prices in China's layer industry chain are well integrated. In addition, our results indicate that both long-run and short-run price relationships between upstream and downstream products in layer industry chain exist and the long-run equilibrium, to a certain extent, may eliminate the short-run dynamics price deviation. We also found that the influence of corn and feed prices on egg prices is still more remarkable than egg-laying chicken prices. Our findings imply that governments should pay more attention to corn and layer feed prices in order to stabilize egg prices under the conditions of market integration.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 11","pages":"Pages 1812-1823"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60181-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genetic Analysis on Characteristics to Measure Drought Resistance Using Dongxiang Wild Rice (Oryza rufupogon Griff.) and Its Derived Backcross Inbred Lines Population at Seedling Stage","authors":"Biao-lin HU ,&nbsp;Xue-qin FU ,&nbsp;Tao ZHANG ,&nbsp;Yong WAN ,&nbsp;Xia LI ,&nbsp;Yun-hong HUANG ,&nbsp;Liang-fang DAI ,&nbsp;Xiang-dong LUO ,&nbsp;Jian-kun XIE","doi":"10.1016/S1671-2927(11)60164-8","DOIUrl":"10.1016/S1671-2927(11)60164-8","url":null,"abstract":"<div><h3>Abstract</h3><p>Drought stress is one of the major constraints to rice (<em>Oryza sativa</em> L.) production and yield stability especially in rainfed ecosystems and is getting worse as the climate changes worldwide. Dongxiang wild rice (DXWR) <em>Oryza rufipogon</em> Griff., contains drought resistant gene. Improving drought resistance of cultivars is crucial to increase and stabilize rice grain yield <em>via</em> transferring resistant gene from species related to rice. In this paper, four upland rice, sixty backcross inbred lines (BILs) derived from BC₁F₅ of R974//DXWR/R974, and their parents were employed to evaluate drought-resistance at seedling stage in the greenhouse. Nine traits were recorded for assessment of drought resistance, including maximum root length (MRL), number of roots (NR), shoot length (SL), dry root weight (DRW), fresh root weight (FRW), root relative water content (RRWC), leaf relative water content (LRWC), level for rolling leaf (LRL), and seedling survivability under repeat drought (SSRD). Using more than 88% of accumulative contribution resulted from the principal component analysis (PCA), the nine traits were classified into five independent principal components and the line 1949 showed the highest resistance. Analysis on the stepwise regression equation and correlation demonstrated that MRL, RN, FRW, and RRWC significantly influenced the drought resistance, thus could be used as comprehensive index for drought resistance at the seedling stage. Using the major gene plus polygene mixed inheritance model of quantitative traits, the inheritance of drought-resistance of BIL population at seedling stage was mostly controlled by two independent genes plus polygene. As a result, the DXWR could be precious resources for genetic improvement of drought resistance in cultivated rice.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 11","pages":"Pages 1653-1664"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60164-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Contents of D-chiro-Inositol, Vitexin, and Isovitexin in Various Varieties of Mung Bean and Its Products","authors":"Yang YAO,&nbsp;Xu-zhen CHENG,&nbsp;Gui-xing REN","doi":"10.1016/S1671-2927(11)60169-7","DOIUrl":"10.1016/S1671-2927(11)60169-7","url":null,"abstract":"<div><h3>Abstract</h3><p>Mung bean (<em>Vigna radiata</em> L.) is rich in bioactive compounds including D-<em>chiro</em>-inositol (DCI), vitexin, and isovitexin, which have beneficial effects on patients with diabetes. To find a better source for these valuable chemicals, we have collected 110 varieties of mung bean seed samples and 8 mung bean products to determine the levels of these bioactive compounds. We also measured the DCI content in mung bean sprouts at different germination stages. Content of DCI, vitexin, and isovitexin in all mung bean varieties ranged from 0.43 to 5.79, 0.12 to 3.00, and 0.03 to 1.16 mg g⁻¹, respectively. The varieties of C0001321, C0003522, and C0004485 have the highest DCI, vitexin, and isovitexin contents, respectively. The mung bean products in the market contained relatively lower level of these bioactive components. Contents of DCI, vitexin, and isovitexin in all mung bean products ranged from 0.119 to 0.717, 0 to 0.547, and 0 to 0.923 mg g⁻¹, respectively. During the 112 h of germination test, DCI level steadily increased at first stage and reached the highest level at 80 h of germination (4.79 mg g⁻¹). These results provide useful information for the selection of suitable varieties and proper germination stages to obtain functional ingredients from mung beans.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 11","pages":"Pages 1710-1715"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60169-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Postulation of Seedlings Resistance Genes to Yellow Rust in Commercial Wheat Cultivars from Yunnan Province in China","authors":"Ming-ju LI ,&nbsp;Jing FENG ,&nbsp;Shi-qin CAO ,&nbsp;Rui-ming LIN ,&nbsp;Geng CHENG ,&nbsp;Ya-xiong YU ,&nbsp;Wan-quan CHEN ,&nbsp;Shi-chang XU","doi":"10.1016/S1671-2927(11)60171-5","DOIUrl":"10.1016/S1671-2927(11)60171-5","url":null,"abstract":"<div><h3>Abstract</h3><p>The objective of this study was to characterize yellow (stripe) rust resistance gene(s) in 52 commercial wheat cultivars from Yunnan Province in China, and to provide information for their rational deployment in field. Seedlings of wheat cultivars were inoculated with 25 differential isolates of <em>Puccinia striiformis</em> from foreign and home to postulate resistance genes to yellow rust, and then validated by pedigree. There were 10 probable resistance genes characterized in these cultivars, in which, <em>Yr9</em> was most commonly postulated to be present in thirteen cultivars. <em>Yr21</em>, the second, was present in four cultivars. <em>Yr8</em>, the third, were present in three cultivars. <em>Yr6</em>, <em>Yr17</em> and <em>Yr26</em>, the fourth, was present in two cultivars respectively. The other gene(s) such as, <em>Yr2+YrA</em>, <em>Yr7</em> and <em>Yr27</em>, were only present in single cultivar(s); unknown gene(s) or gene(s) combination(s) were present in 22 cultivars. One cultivar (Yunmai 42) had no resistance gene tested in this study. Cultivars such as Yunmai 52, Mian 1971-98, Kunmai 4, and Yunmai 56 carried effective genes and can be popularized mainly; <em>Yr9</em> should be planted with other <em>Yr</em> genes. In the meantime other effective genes should be introduced to realize gene diversity for controlling wheat yellow rust. Yunmai 42 should be reduced to avoid rust breakout. Unknown gene cultivars should be utilized and be researched deeply.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 11","pages":"Pages 1723-1731"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60171-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Yield and Water Use Efficiency to First Cutting Date of Siberian Wildrye in North China","authors":"Zi-zhong LI,&nbsp;Wei-hua ZHANG,&nbsp;Yuan-shi GONG","doi":"10.1016/S1671-2927(11)60170-3","DOIUrl":"10.1016/S1671-2927(11)60170-3","url":null,"abstract":"<div><h3>Abstract</h3><p>A field experiment study was conducted in Bashang Plateau in North China in 2008 to determine the effect of three first cutting dates on the growth and water use efficiency (WUE) of Siberian wildrye (<em>Elymus sibiricus</em> L.) in the agropastoral ecotone of North China (APENC). The experiment was conducted in a split plot design with three replications with water supply regime as the main plot treatment and first cutting date as the subplot treatment. Two water supply regimes were used, which included rain-fed treatment as control (CK) and a single irrigation and straw mulch treatment (W). Three first cutting date treatments were conducted at early heading stage on July 1 (E), at late heading stage on July 12 (L), and at flowering stage on July 27 (F), respectively. The results showed that the forage yield and WUE were the lowest at early heading stage harvest, while the highest at flowering stage either in CK or W treatment. Under combined CK and W treatments, average forage yields of the F subplots were 2 900 and 6 703 kg ha⁻¹, and the values of WUE were 0.82 and 2.28 kg m⁻³, respectively. Under the CK treatment, forage yields of the E and L subplots were 43.8 and 41.9% lower than the F subplots, and their values of WUE were 46.2 and 50.3% lower than F, respectively. Under the W treatment, the forage yields of the E and L subplots were 74.9 and 61.6% lower, and their values of WUE were 78.1 and 63.3% lower, respectively, as compared with F subplots. Therefore, earlier first cutting did not increase the regrowth of Siberian wildrye and improve the mismatch between rainy season and the period of high growth potential of the grass in the semiarid APENC.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 11","pages":"Pages 1716-1722"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60170-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Long-Term Application of Organic Manure and Mineral Fertilizer on N2O and CO2 Emissions in a Red Soil from Cultivated Maize-Wheat Rotation in China","authors":"Li-mei ZHAI,&nbsp;Hong-bin LIU,&nbsp;Ji-zong ZHANG,&nbsp;Jing HUANG,&nbsp;Bo-ren WANG","doi":"10.1016/S1671-2927(11)60174-0","DOIUrl":"10.1016/S1671-2927(11)60174-0","url":null,"abstract":"<div><h3>Abstract</h3><p>A long-term field experiment was established to determine the influence of mineral fertilizer and organic manure on soil fertility. A tract of red soil (Ferralic Cambisol) in Qiyang Red Soil Experimental Station (Qiyang County, Hunan Province, China) was fertilized beginning in 1990 and N₂O and CO₂ were examined during the maize and wheat growth season of 2007–2008. The study involved five treatments: organic manure (NPKM), fertilizer NPK (NPK), fertilizer NP (NP), fertilizer NK (NK), and control (CK). Manured soils had higher crop biomass, organic C, and pH than soils receiving the various mineralized fertilizers indicating that long-term application of manures could efficiently prevent red soil acidification and increase crop productivity. The application of manures and fertilizers at a rate of 300 kg N ha⁻¹ yr⁻¹ obviously increased N₂O and CO₂ emissions from 0.58 kg N₂O-N ha⁻¹ yr⁻¹ and 10 565 kg C ha⁻¹ yr⁻¹ in the CK treatment soil to 3.01 kg N₂O-N ha⁻¹ yr⁻¹ and 28 663 kg C ha⁻¹ yr⁻¹ in the NPKM treatment. There were also obvious different effects on N₂O and CO₂ emissions between applying fertilizer and manure. More N₂O and CO₂ released during the 184-d maize growing season than the 125-d wheat growth season in the manure fertilized soils but not in mineral fertilizer treatments. N₂O emission was significantly affected by soil moisture only during the wheat growing season, and CO₂ emission was affected by soil temperature only in CK and NP treatment during the wheat and maize growing season. In sum, this study indicates the application of organic manure may be a preferred strategy for maintaining red soil productivity, but may result in greater N₂O and CO₂ emissions than treatments only with mineral fertilizer.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 11","pages":"Pages 1748-1757"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60174-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Soaking with Wooden Ash and Malting upon Some Nutritional Properties of Sorghum Flour Used for Impeke, a Traditional Burundian Malt-Based Sorghum Beverage","authors":"Irakoze Pierre Claver ,&nbsp;Hui-ming ZHOU ,&nbsp;Hai-hua ZHANG ,&nbsp;Ke-xue ZHU ,&nbsp;Qin LI ,&nbsp;Nicole Murekatete","doi":"10.1016/S1671-2927(11)60180-6","DOIUrl":"10.1016/S1671-2927(11)60180-6","url":null,"abstract":"<div><h3>Abstract</h3><p>The objective of the present work was to determine the effect of wooden ash extract on anti-nutritional factors and to assess the effect of soaking with malting on nutritional properties of sorghum flour used for impeke. The addition of wooden ash extract during 24 h of soaking resulted in significant decrease in tannin by 50.2% and the decrease was observed to be progressive as malting time increases. 5 d of malting resulted in significant decrease in tannin by 69.3% and in phytic acid by 66.4% with slight decrease in ash, lipid, fiber, and starch. Malting showed an increased percentage of protein, essential amino acids, and then <em>in vitro</em> protein digestibility were markedly improved with increasing malting time. Sugars analysis proved a significant increase in maltose, glucose, fructose, and structural analysis of sorghum starch displayed porosity on granule's surface susceptible to the amylolysis.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 11","pages":"Pages 1801-1811"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60180-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characterization of Growth and Light Utilization for Rice Genotypes with Different Tiller Angles","authors":"You-nan OUYANG ,&nbsp;Fan-rong ZENG ,&nbsp;Ling ZHAN ,&nbsp;Guo-ping ZHANG","doi":"10.1016/S1671-2927(11)60168-5","DOIUrl":"10.1016/S1671-2927(11)60168-5","url":null,"abstract":"<div><h3>Abstract</h3><p>Tiller angle is very important for plant architecture and canopy structure in rice (<em>Oryza sativa</em> L.). Physiological and ecological characteristics of three rice genotypes with different tiller angle habits were compared in the paper. DI508, a genotype with changing tiller angle during the growth, has semi-erect tillers at early tillering stage, similar to genotype M09, and had erect tillers at late stage, similar to genotype 9308. In terms of dry biomass per plant, DI508 was consistently higher than those of M09 and 9308 throughout the growth. It was also a distinct difference of leaf area per plant that DI508 was larger than two others. From booting stage, DI508 and 9308 maintained higher photosynthetic ability of the topmost three leaves, while M09 showed rapid decline in photosynthesis during grain filling. It may be concluded that the genotype DI508 with dynamic tiller angle habit has a comprehensive advantage of fast growth and high weed competition at early stage and slow decline in photosynthesis at late stage.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 11","pages":"Pages 1701-1709"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60168-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Influence of Transgenic cry1Ab/cry1Ac, cry1C and cry2A Rice on Non-Target Planthoppers and Their Main Predators Under Field Conditions","authors":"Yu HAN,&nbsp;Xue-liang XU,&nbsp;Wei-hua MA,&nbsp;Ben-qi YUAN,&nbsp;Hui WANG,&nbsp;Fang-zhou LIU,&nbsp;Man-qun WANG,&nbsp;Gang WU,&nbsp;Hong-xia HUA","doi":"10.1016/S1671-2927(11)60172-7","DOIUrl":"10.1016/S1671-2927(11)60172-7","url":null,"abstract":"<div><h3>Abstract</h3><p>Transgenic <em>Bt</em> rice has been shown to be an effective means of controlling Lepidoptera pests of rice. However, the potential roles of transgenic rice on planthoppers and their predators need to be investigated before its commercialization. Population density, species dominance and population dynamics are important parameters of arthropods populations in field. So the impacts of three transgenic <em>Bt</em> rice strains expressing <em>cry1Ab/cry1Ac</em>, <em>cry1C</em> and <em>cry2A</em> on population density, species dominance and population dynamics of three species of planthoppers (<em>Nilaparvata lugens</em>, <em>Sogatella furcifera</em> and <em>Laodelphax striatellus</em>) and their three main predators (<em>Cyrtorhinus lividipennis</em>, <em>Pirata subpiraticus</em> and <em>Theridium octomaculatum</em>) were evaluated at three sites in Hubei Province, China, in the current study. The results showed that among three species of planthoppers, both in transgenic and non-transgenic rice field, the predominant species of planthoppers within phytophagous guild was <em>S. furcifera</em> at any site either growing season (46–50%). Significantly higher population density of <em>N. lugens</em> was observed in T2A-1 field relative to Minghui 63 field at Wuxue in 2010. The species dominance of predator, <em>P. subpiraticus</em>, in TT51 field was significantly higher than that in T1C-19 and T2A-1 fields in 2009 at Xiaogan site. Sampling date significantly influenced six arthropods except for <em>P. subpiraticus</em> in 2010. The interaction between rice strain×sampling date had no significant adverse effects on the population dynamics of three species of planthoppers and their predators, except for several individual species in 2009. The interaction among rice strain×sampling date×sampling site also had no significant effect on six arthropods except for <em>S. furcifera</em> in 2009. The results indicated that transgenic <em>Bt</em> rice expressing <em>cry1Ab/cry1Ac</em>, <em>cry2A</em> and <em>cry1C</em> had no significant adverse effects on the population dynamics of three planthoppers and their predators in most investigated data and sampling site.</p></div>","PeriodicalId":7475,"journal":{"name":"Agricultural Sciences in China","volume":"10 11","pages":"Pages 1739-1747"},"PeriodicalIF":0.0,"publicationDate":"2011-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1671-2927(11)60172-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56762232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}