Current issue

• 2008 Vol.24 No.5 Published:05 May 2008

  农艺科学

  Characterization and Evaluation of Cold Tolerance in the Drooping Leaf Rice Mutants and Its Progenies Zhang Xiaoxiang, , Chen Lijuan, Tan Yalin, Huang Dajun Hong Ruke, Wang Baohe, Dai Zhengyuan 2008, 24 (5):  0.  Abstract + ( 2061 )   PDF ( 683070KB )   ( 1019 ) This experiment investigated the cold-tolerance in two japonica drooping leaf mutants(MR304、MR312) and its crossing progenies (F1 and F2) at seedling stage under the high elevation cold area in Yunnan, analyzed the pollen fertility between the mutants and their crosses at heading stage, and measured the correlated economical and biological traits at maturity stage. The results showed that: mutants and parents were resistance (R); the Nan29/MR312, Dianjingyou5/MR304, Ansanbyeo/MR304 were medium resistance (MR), the Dianjingyou5/MR312 was sensitivity (S), others were resistance (R) in F1 The pollen fertility of Yinguang at the heading stage were highest, which was up to 88.9%; the Yinguang/MR304 surpassed the contrast (92.5%) were the highest in F1 of nine combinations, to 94.5%, and Ansanbyeo/MR304 were the lowest. The seed-set rate of Yinguang surpassed the contrast (70.9%), to 82.4%, and seed-set rate of MR304 and MR312 were lower, 26.2%and 5.0%, respectively, and the seed-set rate of two combinations (Yinguang/MR304 and Yinguang/MR312) in F1 surpassed the contrast. The study revealed that we could utilize the F1 heterosis derived from the cross of drooping leaf mutants and conventional varieties to enhance the superiority of cold tolerance in the high elevation cold area, and the pollen fertility at the heading stage was the important index to evaluate the cold tolerance in crossing progenies F1.

  三农问题研究

  Deterioration of Ecological System in Minqin Challenges the Nation Pu Weihui 2008, 24 (5):  0.  Abstract + ( 2010 )   PDF ( 683070KB )   ( 1193 ) This paper, based on a scientific research of current ecological situation of Shi Yang River and, especially with a scientific investigation and report of the history of oasis desolation in Minqin, makes an objective analysis focusing on the major problems and contradictions concerning water resource, damages caused by sandstorm, economic development and ecology protection, immigration and fund investment in the course of protecting ecological environment in Minqin. At the same time, it puts forward some strategies and suggestions for the future integrative administration of ecological environment of this area.

  畜牧兽医科学

  Epidemiological Investigation and Dispelling Parasite Test on Herbivore and Quadrumana in Zhengzhou Zoo Jian Fuchun, Zhang Qingtao, Li Shaoying, Li Tongyi, Li Dezhong, Zhang Longxian, Ning Changshen 2008, 24 (5):  0.  Abstract + ( 1886 )   PDF ( 523938KB )   ( 1133 ) Epidemiological investigation of Herbivore and Quadrumana parasitosis was carried out in 2003 and 2006. The saturated sugar solution or saturated sodium chloride solution flotation method were used in this survey. Results, there were 15 species of herbivore and Rhinopithecus roxellanae were detected in 2003, Nematode and Coccidian were detected mainly, the positive rate was up to 52.5%, but the intensity was slight；21 herbivore and 14 species of Quadrumana were checked in 2006, the total positive rate was 32.58%, Coccidia, Trichuris. Trichiura, cestodes, Ascarid was 15.66%、13.25%、4.82%、1.2%, respectively. The infected animal were treated respectively by Mebendazole Tablet(100mg), Ivermectin Injection(1%), Diclazuril(0.5%), and so on.. The result showed the curative effect of these drugs was significant except snub-nosed monkeys( Rhinopithecus roxellanae) Trichuriasis.

  农艺科学

  Correlated Analysis on Wheat Powdery Mildew and Some Main Wheat Agronomic Traits Wu Tongyan, Liu Hui, Xie Lingqin, Gu Juntao, Yang Xueju, Jiang Fengling, Fegn Daling, Liu Xia 2008, 24 (5):  0.  Abstract + ( 1832 )   PDF ( 352212KB )   ( 1157 ) Powdery mildew is one of the most serious wheat diseases through the world. In this article, 16 wheat varieties (lines), breezed by our research group, were used to detect the correlation of wheat powdery mildew and some main wheat agronomic traits. The results showed that the correlation between wheat powdery mildew and the wheat plant height, base third stem length, third top leaf length were positive significantly(r=0.5356,r=0.5687，r=0.5157), and the correlation between wheat powdery mildew and the next top leaf was positive(r=0.7181). However, the correlation between the wheat powdery mildew and the sterile spike was negative significantly(r=-0.7132). The correlation between the wheat powdery mildew and the next top leaf wide, third to top leaf wide were no existed(r=-0.4340,r=-0.4803). Using molecular mark technology to locate the powdery mildew gene and aid wheat breeding is one of the most useful methods in protecting wheat powdery mildew disease.

  食品科学

  Analysis on Establishing the Framework of Market Access Mechanism for Agricultural Food Quality and Safety in China FENG Zhongze, WAN Liangjun, TIAN Li 2008, 24 (5):  0.  Abstract + ( 1853 )   PDF ( 641223KB )   ( 1134 ) The text makes use of the general principles of governmental economics, through the normative analysis, puts forward to the target and principle about that government establishes market access system of agricultural food quality and safety. Also it defines the subject, object and range of market access regulations of agricultural food quality and safety. It gives the suggestions on framework of market access system of agricultural food quality and safety. Here provides the theoretical references for Chinese government who establishes market access system of Agricultural food.

  热带农业科学

  The ISSR Analysis of 16 Okra Resources Huang Jie, , Chen Xiaobin, Ye Hualan, Liu Guodao, 2008, 24 (5):  0.  Abstract + ( 2187 )   PDF ( 519944KB )   ( 1231 ) Sixteen Citrus resources, including Owayadei（Abelmoschus esculentus L.）, Ladies finger（Abelmoschus esculentus L.）, golder kost（Abelmoschus esculentus L.）, Esoyarido（Abelmoschus esculentus L.）have been analysed by using inter-simple sequence repeat(ISSR), and the results show that 162 pattern bands results from 16 materials ISSR-PCR by amplifying 14 primers. Among which 102(62.96%) were polymorphic. The average number of DNA bands amplified by each primer was 11.6. Based on the results of amplifying, the genetic distance was analyzed, a tree diagram was constructed by using UPGMA algorithm. The 16 Okra germes were classified into 4 group.

  水产渔业科学

  The Effect of Rare Earth Nitrate to Crucian Carp Growth Performance and Nutritional Status Wang Song, Bao Fangyin, Xiao Mingsong 2008, 24 (5):  0.  Abstract + ( 1973 )   PDF ( 311829KB )   ( 1223 ) Adding different quantity of rare earth nitrate to the Carassius auratus feed and researching the effect of rare earth on the production performance and nutritional status of Carassius auratus. The result indicates that the effect of adding rare earth nitrate 45mg/kg in the feed was the most obvious, the growth velocity was improved, the feed coefficient was greatly decreased significantly(p﹤0.01), the disease resistance ability was enhanced and the mortality rate was reduced, meanwhile the contents of protein and fat in bodies of fish was obviously improved(p﹤0.05).

  三农问题研究

  Technology Innovation and Sustainable Development of Tobacco Leaf Su Xinhong, 2008, 24 (5):  0.  Abstract + ( 1822 )   PDF ( 479621KB )   ( 1139 ) Tobacco leaf is the base for the development of tobacco industry and its sustainable development impacts the overall situation in industry. Technique innovation is a prime mover for realizing sustainable development of economy and society, which promotes the sustainable development of tobacco leaf. From the start points of the concept of technique innovation and the particularity of tobacco leaf itself, the authors elaborate the technique innovation connotation of tobacco leaf, and discuss the sustainable development in agriculture and the relationship between it and technique innovation. On this foundation, aiming at the current status of reform and development in the tobacco industry, combining the three greatest goals of sustainable development in agriculture, and depending on technology innovation, accordingly keeping sustainable development of agricultural resources (i.e. realize market supply, protect ecosystem environment, optimize labor force resource, innovate science and technology in tobacco, increase capital input, speed up reform in system and mechanism) are basic guarantees for sustainable development of tobacco leaf.

  土壤肥料科学

  Influence of Water and Fertilizer Coupling on Photosynthetic Characters and Yield of Pumpkin In Loess Plateau Gao Jing, Liang Yinli , He Lina, Zhou Maojuan, Wei Zexiu, Luan Zhengchun 2008, 24 (5):  0.  Abstract + ( 1941 )   PDF ( 518224KB )   ( 1057 ) Effects of water and fertilizer coupling on photosynthetic characteristics and yield of pumpkin were investigated at conditions with different water and fertilizer treatments. The results showed that: the influence of water and fertilizer factors on the pumpkin photosynthetic characters and yield are great, water and fertilizer coupling was not significant under the water stress situation, water and fertilizer coupling was restricted eath other under the low water situation, water and fertilizer coupling was increased eath other under the high water situation. The ingle factor effect is: N>water>P, the coupling effect is: nitrogen and water coupling>nitrogen and phosphorus coupling>phophorus and water coupling. The appropriate fertilization level (nitrogen 50kg.hm-2, phosphorus 35 kg.hm-2) can increase the photosynthetic rate and yield of pumpkin when the water level was appropriated.

  农业工程科学

  Study on Swelling Behaviors and Slow-Release of Poly(acrylic acid-co-acrylamide)/Expanded Vermiculite /Sodium Humate Superabsorbent Composite Hua Shuibo, , Yang Kui, Wang Aiqin 2008, 24 (5):  0.  Abstract + ( 2051 )   PDF ( 424979KB )   ( 1073 ) 【OBJECTIVE】A novel superabsorbent of poly(acrylic acid-co-acrylamide)/expanded vermiculite/sodium humate was synthesized through aqueous solution polymerization among acrylic acid, acrylamide, expanded vermiculite and sodium humate. 【METHOD】The water absorbency in various saline solutions, resweling behaviors, the practical water absorbency in soil and the slow-release behavior of sodium humate of poly(acrylic acid-co-acrylamide)/expanded vermiculite/sodium humate superabsorbent composite were systematically investigated. 【RESULTS】The poly(acrylic acid-co-acrylamide)/expanded vermiculite/sodium humate superabsorbent with 30% EVMT and 10% SH gave the water absorbency 426 g/g in distilled water and 45 g/g in 0.9 % NaCl solution; Water absorbency of the superabsorbent decreased with increasing the concentration of the various saline solution, and the water absorbency was in the order PO43->Cl->SO42- and Na+> Ca2+> Fe3+ at the same concentration; 24.6% of water can still be saved in the soil containing 1.0% superabsorbent after 20 days.【CONCLUSION】The incorporation of sodium humate into poly(acrylic acid-co-acrylamide)/expanded vermiculite polymeric network not only improved the reswelling capacity, but also endowed the slow-release capacity of the superabsorbent.

  农业生物技术科学

  The Progress and Prospect of Wheat Transgenic Research in China Li Yongchun, Wang Xiao, Chen Lei, Yin Jun 2008, 24 (5):  0.  Abstract + ( 2012 )   PDF ( 620303KB )   ( 1690 ) In recent years, wheat genetic transformation has been greatly developed and become an effective complementation for traditional breeding in China. The application of major transgenic methods and researching progresses in wheat molecular breeding are discussed, which include studies on diseases and insects resistance, quality improving, abiotic stresses tolerance and some other aspects in wheat molecular breeding. In addition, the problems and prospect of wheat transgenic breeding were discussed.

  农艺科学

  The Composition and Polymorphism Analysis of Glu-1 Subunits of Wheat Varieties and Their Parents in Shandong Province after Liberation Wang Jiangchun, Li Yunpeng, Wang Xufang, Yin Yan, Xin Qingguo, Jiang Hongming,Li Linzhi, Wang Honggang 2008, 24 (5):  0.  Abstract + ( 3244 )   PDF ( 567582KB )   ( 1188 ) The aim of this paper was to study the composition and polymorphism of Glu-1 Subunits of wheat varieties that selected from liberation to now in Shandong province and select breeding material to improve wheat quality. The Composition and Polymorphism of Glu-1 Subunits were analyzed by SDS-PAGE. The results showed that “null” and “7+9” were the predominant allele variation patterns on Glu-A1 loci. Five allele variation patterns, “7+8”, “7+9”, “14+15”, “17+18” and “6+8” were detected on Glu-B1 loci, but the predominant patterns were “7+8” and “7+9”. Six allele variation patterns, “2+12”, “2+10”, “5+10”, “4+10”, “4+12” and “2+11” were detected on Glu-D1 loci, but the predominant pattern was “2+12”. In those three loci, Glu-B1 loci had the highest polymorphic frequency, Glu-D1 loci was second, and the last was Glu-A1. The polymorphism index of Glu-1 decreased gradually from 1950’ and reached to the lowest point in 1960’. After that the polymorphism index of Glu-1 increased slowly and got the highest point in 1990’. But the index showed decrease from 1990’ to now. The frequencies of the high quality subunits were low in wheat variety and its parent in Shandong province. This could be a way to improve wheat quality of Shandong province.

  畜牧兽医科学

  The Relation between the Virus-seed of Infectious Bronchitis Virus（M41）and its Immunogenicity Wang Xinwei, Xue Bangyu, Wang Zelin, Ma Longhua 2008, 24 (5):  0.  Abstract + ( 2084 )   PDF ( 387082KB )   ( 1039 ) Whether different generations of IBV M41 strain could be used as seed for producing vaccine was evaluated. In this article IBV M41 strain was handed down from 1 to 8 generation. The 3rd, 5th and 7th offsprings were chosen for evaluating their immunogenicity by detection of their EID50. Vaccines to the three generations were prepared and used for inoculating the SPF chicken. The results indicated that the three vaccines could protect the birds and the protection rate was all above 9/10. The controls were infected and showed signs of the disease. The antibody titers of them were assayed at post-inoculation and the results indicated that the mean antibody titer rose to 3 times of that of the pro-inoculation. Different generations of IBV M41 strain still kept good immunogenicity and could be used as product seed for preparing IB vaccines.

  热带农业科学

  The Cassava of Status of Production and Utilization and Analyze the Development of the Feasibility of the Cassava Industry in Fujian Province Xu Yongqing,Tang Hao,Cai Nantong,Qiu Yongxiang,Wu qiuyun, Luo Wenbin,Liu Zhonghua,Li Guangxing 2008, 24 (5):  0.  Abstract + ( 3299 )   PDF ( 442443KB )   ( 1548 ) The cassava is the third of tuber and root crops except for sweetpotato and potato in Fujian Province. The article introduced the cassava of origin and distribution, production and utilization at home and abroad. According to the development status of cassava, the article also analyzed and evaluated the feasibility of the cassava industry in Fujian Province and gave some suggestions：first introducing and applying new varieties,improved variety system of cassava ;second introducing high yield and cold resistant cassava varieties,enlarge planting bound;third instituting culture high yield techniques of cassava in Fujian;fourth discussing the comprehensive utilization ways of cassava.

  农业信息科学

  Design and Realization of GIS-based Agricultural Economy Information Service System Yang Fuyun, Zhu Yeping, E Yue 2008, 24 (5):  0.  Abstract + ( 1861 )   PDF ( 593149KB )   ( 950 ) In view of the shortcomings of the existing agricultural economy information system, a transformation programme of using Geographic Information System technology was proposed. The GIS for agricultural economy information service was designed and developed based on ComGIS software Supermap Objects and development language C#.Net,and the agricultural economy information database was established.The new system has realized the spatial inquiry and the spatial analysis of agricultural economy message data, provides the auxiliary policy-making method and the auxiliary analysis basis for all levels of Agriculture department, raised the agricultural economy information service level.This paper elaborates on architecture of the system,module of function,and the basic process development of GIS using SuperMap Objects components in the environment of C#.Net.