Breeding of a New Silkworm Variety “Yesanyuan” with Healthiness and Hypersilk

[Objective] The study aimed to breed eminent mulbery wild silb with hypersilk.[Method] Eminent mulberry wild silkworm basic materials Ye A and Ye B were bred by distant complex crossing of wild mulberry silkworm with strong stress resistance and hypersilkgeneous silkworm,then hybridized with Japanese silkworm strain,the new silkworm variety "Yesanyuan" with healthiness and hypersilkgene was bred.[Ressult]The results of laboratory identification and rural productive test in Jiangsu Province showed that it has excellent feeding habit,strong stress resistance,high yield,excellent silk quality and excellent fecundity.The new silkworm variety "Yesanyuan" had been approved by Silkworm Variety Evaluation Commission of Jiangsu Province in 2008,it is suitable to rear in Yangtze River catchment for Spring and Autumn,North sericultural area for all-year.[Conclusion] The study is helpful for the development of silkworm industry.     

强健性多丝量蚕品种“野三元”的育成(英文)

[Objective] The study aimed to breed eminent mulbery wild silb with hypersilk.[Method] Eminent mulberry wild silkworm basic materials Ye A and Ye B were bred by distant complex crossing of wild mulberry silkworm with strong stress resistance and hypersilkgeneous silkworm,then hybridized with Japanese silkworm strain,the new silkworm variety "Yesanyuan" with healthiness and hypersilkgene was bred.[Ressult]The results of laboratory identification and rural productive test in Jiangsu Province showed that it has excellent feeding habit,strong stress resistance,high yield,excellent silk quality and excellent fecundity.The new silkworm variety "Yesanyuan" had been approved by Silkworm Variety Evaluation Commission of Jiangsu Province in 2008,it is suitable to rear in Yangtze River catchment for Spring and Autumn,North sericultural area for all-year.[Conclusion] The study is helpful for the development of silkworm industry.     

Breeding Report of New Mung Bean Variety“Ji Heilv No.12”

The mung bean variety Ji Heilv No.12 was bred by lnstitute of Characteristic Crop Research, Chongqing Academy of Agricultural Sciences and lnstitute of Food and Oil Crops, Hebei Academy of Agricultural and Forestry Sciences. using Jilv 9 and Jilv 7 as female and male parent respectively,with pedigree method. Ji Heilv No.12 is a new variety with features of high and stable yield,broad adaptability and strong resistance in yield trails during 2011-2012; it was approved and released by Chongqing Provincial Committee of Crop Variety ldentification in 2012,suitable for cultivating in most area of Chongqing.     

枯草芽孢杆菌B47高产拮抗物质菌株的紫外诱变选育(英文)

[Objective] The aim of this study was to breed new strains which have higher inhibitory effects on the pathogens of watermelon fusarium wilt.[Method] The endophytic Bacillus subtilis B47 strain was obtained from tomato stems by UV mutagenesis for two consecutive times,then genetic stability as well as physiological and biochemical properties of mutant strains were studied.[Result] The antibacterial activity of all the three mutant strains F303,F304 and F305 was higher than that of B74 strain.After subculture of 10 successive generations,the antibacterial activity of all the three mutant strains for the pathogens of watermelon fusarium wilt decreased,but the antibacterial activity of F305 strain decreased the least,indicating its best genetic stability among the tested strains.The antibacterial circle diameter of F305 strain was 5 mm larger than that of wild strain B47 under the same condition.The mutant strain F305 was in logarithmic growth phase within 36 h and in stationary phase within 36-96 h,while its optimum growth temperature was 35 ℃.F305 strain could grow in sodium salt with the concentration of 1%-10%,but it grew best at the concentration of 1%.Physiological and biochemical responses of F305 strain were in accordance with those of wild strain B47.[Conclusion] This study lays the foundation for the factorial production of antagonistic substance by B47 strain and new methods of preventing from the pathogens watermelon fusarium wilt.     

Screening for the Strain Highly Producing Antagonistic Substance from Bacillus subtilis B47 by UV Mutagenesis

[Objective] The aim of this study was to breed new strains which have higher inhibitory effects on the pathogens of watermelon fusarium wilt.[Method] The endophytic Bacillus subtilis B47 strain was obtained from tomato stems by UV mutagenesis for two consecutive times,then genetic stability as well as physiological and biochemical properties of mutant strains were studied.[Result] The antibacterial activity of all the three mutant strains F303,F304 and F305 was higher than that of B74 strain.After subculture of 10 successive generations,the antibacterial activity of all the three mutant strains for the pathogens of watermelon fusarium wilt decreased,but the antibacterial activity of F305 strain decreased the least,indicating its best genetic stability among the tested strains.The antibacterial circle diameter of F305 strain was 5 mm larger than that of wild strain B47 under the same condition.The mutant strain F305 was in logarithmic growth phase within 36 h and in stationary phase within 36-96 h,while its optimum growth temperature was 35 ℃.F305 strain could grow in sodium salt with the concentration of 1%-10%,but it grew best at the concentration of 1%.Physiological and biochemical responses of F305 strain were in accordance with those of wild strain B47.[Conclusion] This study lays the foundation for the factorial production of antagonistic substance by B47 strain and new methods of preventing from the pathogens watermelon fusarium wilt.     

枯草芽孢杆菌B47高产拮抗物质菌株的紫外诱变选育(英文)

[Objective] The aim of this study was to breed new strains which have higher inhibitory effects on the pathogens of watermelon fusarium wilt.[Method] The endophytic Bacillus subtilis B47 strain was obtained from tomato stems by UV mutagenesis for two consecutive times,then genetic stability as well as physiological and biochemical properties of mutant strains were studied.[Result] The antibacterial activity of all the three mutant strains F303,F304 and F305 was higher than that of B74 strain.After subculture of 10 successive generations,the antibacterial activity of all the three mutant strains for the pathogens of watermelon fusarium wilt decreased,but the antibacterial activity of F305 strain decreased the least,indicating its best genetic stability among the tested strains.The antibacterial circle diameter of F305 strain was 5 mm larger than that of wild strain B47 under the same condition.The mutant strain F305 was in logarithmic growth phase within 36 h and in stationary phase within 36-96 h,while its optimum growth temperature was 35 ℃.F305 strain could grow in sodium salt with the concentration of 1%-10%,but it grew best at the concentration of 1%.Physiological and biochemical responses of F305 strain were in accordance with those of wild strain B47.[Conclusion] This study lays the foundation for the factorial production of antagonistic substance by B47 strain and new methods of preventing from the pathogens watermelon fusarium wilt.     

沙枣引种试栽研究(英文)

[Objective] The experiment aimed to explore the possibility of introducing Elaeagnus angustifolia L. in saline land of West Jilin Province for improving local ecological environment. [Method] The Elaeagnus angustifolia L. from Ningxia Province were sown in nursery and practice base of Forestry College in Beihua University to observe their phenophase, growth state, stress resistance and study the relations between survival rate and different cutting medium, grafting methods. [Result] Elaeagnus angustifolia L. could adapt to climate condition in Jilin area and grow well . Among 3 cold-proof measures, there was no freezing injury by soil burial method, although there was 2.8% and 3.9% mortality by covering grassy marshland and winding straw, the cold injury degree was light, so they could go through winter normally. Meanwhile, Elaeagnus angustifolia L. had good saline-alkali tolerance, drought resistance and flood resistance. The successful cutting and graft of Elaeagnus angustifolia L. provided a condition for planting in large-scale and knew the rooting rate of different cutting medium. [Conclusion] Elaeagnus angustifolia L. could be introduced to plant in West Jilin Province.     

Pathotype Structure of Magnaporthe grisea in the Fields of Chongyang and Yuan’an in Hubei Province,China

[Objective] This study aimed to explore the pathotype structure of Magnaporthe grisea in Chongyang and Yuan’an in Hubei Province,China.[Method] From the rice-growing fields of Chongyang and Yuan’an in Hubei Province where rice blast occurs frequently,60 isolates which were pathotyped against two sets of host differentials:Chinese host differentials and CO39 NILs,were obtained.Then,20 pathotypes with the six indica host differentials(CO39 NILs) were observed,while 13 pathotypes in four race groups were observed out of the same single spore isolates with Chinese host differentials which consists of three indica cultivars and four japonica cultivars.The diversity of the pathotypes of M.grisea populations tested by CO39 NILs was 2.54 and the pathotype 137.1 occurred at predominantly high frequency(21.67%).The diversity of physiological races of M.grisea populations tested by Chinese host differentials was 1.22 and the race group ZA occurred at predominantly high frequency(73.33%).The diversity of physiological races of M.grisea in Chongyang and Yuan’an were also calculated.Overall,the diversity of pathotypes of M.grisea in Yuan’an was higher than that in Chongyang with the two sets of the host differentials.[Conclusion] This study provided current information on the pathotype spectrum of M.grisea populations in the rice fields of Hubei Province to allow the formulation of viable strategies for blast resistance breeding programs in Hubei Province.     

百蕊草无性系建立与瓶外生根研究(英文)

[Objective] The aim of this study is to establish the rapid micro-propagation system in Thesium chinense Turcz.[Method]With stem fragments of wild Thesium chinense Turcz as explants,different culture media were designed to conduct induction culture,strengthening plantlet culture and in vitro rooting.[Result]The optimum medium for inducing clustered shoots was determined to be MS medium appended with 1.5 mg/L 6-BA,0.01 mg/L NAA and 0.3 mg/L 2,4-D;in addition,60 mg/kg ABT was suitable for rooting,by which the percentage of rooted plantlets reached 76.6%.[Conclusion]This study simplified the procedures of tissue culture in Thesium chinense Turcz and enhanced the proliferation rate,providing basis for artificial cultivation and resource protection of Thesium chinense Turcz.     

Cultivar Selection and Test Site Evaluation of Cotton Regional Trials in Jiangsu Province Based on GGE Biplot

[Objective] This study was to evaluate the high yielding and stability of candidate cultivars, depict the adaptive planting region, analyze trial location discrimination ability and representativeness, as well as identify the ideal cultivar and trial location, with the aim to provide theory background for cultivar selection and reasonable scheme of test location in Jiangsu Province. [Method] The GGE biplot method was used to analyze the lint cotton yield of 12 experimental genotypes in the 6 test locations(three replicates in each) of the cotton regional trial in Jiangsu Province in 2013. [Result] The effects of genotype(G), environment(E), and genotype by environment interaction(G×E) on lint cotton yield were all highly significant(P0.01), which made it necessary to further explore the specific pattern of genotype by environment interaction. Jinmian118(G4) and SF3303(G5) were the best ideal genotypes screened by the "ideal cultivar" and "ideal location" view of GGE biplot, and the ordination of test sites based on the ideal index were in the order of Dafeng(DF), Yanliang(YL), Liuhe(LH), Dongtai(DT), Yancheng(YC), and Nantong(NT), among which NT was relatively weak in representing of the whole target cotton planting region in Jiangsu Province. The "similarity among locations" view of GGE biplot clustered all trial locations into one group, showing that the test sites in the cotton planting region in Jiangsu Province were in the same mega-environment.The "which-won-where" view of GGE biplot indicated that cotton cultivar Jinmian118(G4) was the most appropriate cultivar in the homogeneous cotton planting region in Jiangsu Province. [Conclusion] Among the candidate cultivars, Jinmian118 and SF3303 were identified as the most ideal cultivars in this set of conventional cotton regional trial in Jiangsu Province; the test site of Dafeng ranked the first out of all locations in terms of discrimination and representativeness, and all test locations were clustered into the same mega-environmet, which indicated the high efficiency of cultivar selection in the cotton regional trial in Jiangsu Province.     

强健性多丝量蚕品种“野三元”的育成

[目的]培养强健性多丝量蚕品种。[方法]将抗逆性强的野桑蚕与多丝量家蚕品种远缘复合杂交,培育出的优质野桑蚕基础素材野A和野B,并将其与日系蚕品种进行杂交组配,筛选强健性多丝量蚕品种。[结果]经江苏省家蚕新品种实验室鉴定和农村生产试验表明,具有食性优、抗逆性强、产量高、茧丝质优良、繁育性能优的特点,并定名为"野三元"。2008年通过江苏省家蚕品种审定,适宜长江流域春、秋季及北方蚕区全年饲养。[结论]该研究将有助于蚕丝产业的进一步发展。     

优质高产抗旱新桑品种川826选育

[目的]以优质、高产、抗逆为育种目标,对桑树新品种种质资源进行系统鉴定和综合评价。[方法]采用辐射与复合杂交相结合的育种方法,选育优质、高产、高抗桑树新品种,通过四川省桑品种区域试验和农村生产试验进行鉴定。[结果]新品种川826发芽率高、枝条直立、生长势旺;全年平均公顷桑产叶量比对照湖桑32号高13．95％;桑叶养蚕的万蚕产茧量比对照高8．88％,万蚕产茧层量比对照高8．8％,5龄担桑产茧量比对照高13．51％;秋叶硬化迟,抗干旱能力强。[结论]川826是一个优质、高产型桑树品种,综合性状优良。     

强健性夏秋用新蚕品种川蚕24号育成

[目的]介绍强健性夏秋用蚕品种川蚕24号的选育经过和品种特性。[方法]采用杂交育种和系统选择的方法,育成强健性夏秋用皮斑双限性蚕品种川蚕24号。[结果]经四川省家蚕品种审定的室内鉴定和农村鉴定,新品种具有强健好养、发育整齐、茧丝质优、可根据幼虫体色和斑纹区分雌雄的特点,万蚕产茧量19.66 kg,茧丝长1 241.29 m,解舒丝长941.99 m,解舒率75.87%,鲜茧出丝率17.07%,洁净94.03分,主要经济指标超过对照种。[结论]新品种川蚕24号强健好养,高产优质,适合四川、重庆等长江流域蚕区夏秋季饲养。     

双低油菜新品种苏油4号主要性状及高产栽培技术研究

[目的]推广双低油菜新品种"苏油4号"。[方法]比较分析了苏油4号与当地主栽品种的主要性状,并介绍了苏油4号的高产栽培技术。[结果]苏油4号具有高产与双低品质相结合,成熟期适中,抗逆性较好等特点;2007年9月通过江苏省农作物品种审定。[结论]苏油4号适于江苏省及相邻地区采用育苗移栽和稻茬浅耕晚直播种植。     

多丝量家蚕品种9601×92的育成及推广

[目的]研究多丝量家蚕品种9601×92的选育及其性状表现。[方法]在家蚕中导入野桑蚕的基因,育成了一对春用品种"9601×92",对其主要经济性状和推广情况进行研究。[结果]与对照种菁松×皓月相比,该品种万头收茧量提高7.49%;万头茧层量提高10.72%;万头产丝量提高8.50%;50 kg桑产茧增加4.18%;5龄蚕50 kg桑产丝量提高4.81%。经多点试养,该品种主要经济性状稳定,丝质优良,尤其是净度好,生产试养中其张种比菁松×皓月增产4.8 kg,茧层率提高1个百分点,张种增值80多元。[结论]该品种具有高产、优质、体健、好养、易繁的特点,综合经济性状优良,适应性强,可在山东省及北方蚕区等适宜地区饲养,是一对春、秋兼用的优质高产家蚕新品种。     

桑树新品种昂绿1号区试报告

对山东省蚕业研究所选育的桑树新品种昂绿1号进行区域试验,结果表明：昂绿1号产叶量高,单位面积产叶量比湖桑32号春季提高17.80%,夏秋季提高8.08%,全年提高12.73%;叶质优,万蚕产茧量、万蚕茧层量、100kg桑产茧量和100kg桑茧层量4项鉴定成绩分别比湖桑32号高4.04%、1.96%、4.55%和2.58%;抗桑疫病能力强,发条力强,适合作条桑育桑树新品种。     

徐优201特性及无公害栽培技术探讨

[目的]推广优质杂交中粳徐优201。[方法]对徐优201的特性及无公害栽培技术进行阐述。[结果]该品种具有米质优、产量高、抗性强等特点,并于2005年通过江苏省农作物品种审定委员会审定。[结论]该品种适宜进行无公害栽培。     

安康引进桑品种饲养原蚕的研究

[目的]探讨安康新引进桑品种饲养原蚕制种的成绩。[方法]采用生物试验的方法,对几个新引进的桑品种进行饲养原蚕试验。[结果]引进桑品种对原蚕发育经过及生命率、茧质、卵质影响无明显差异,与对照品种相近,且秋蚕期各桑品种饲育原蚕的产卵平均良卵率均达到95.96%以上。[结论]桑品种强桑1号、陕桑305、金十、丰田5号、农桑14号、育71-1、湖桑32号均可用于秋期原蚕饲育。