应用极大似然法分析小麦穗长的遗传     

张安静  张俊祖  刘凤琴  罗洪溪  王彬龙  赵会利 《勤云标准版测试》2006,(9)

采用质量—数量性状遗传的极大似然分析方法,对长穗小麦品系93(220)的主茎穗长进行了质量—数量遗传模型测验和主、微基因效应与变异估计。结果表明:长穗小麦新品系93(220)的主茎穗长为一典型的质量—数量性状,由一个主基因和若干微基因共同控制;一对隐性主基因控制穗长,附合加性——显性遗传模型,F1代表现为部分显性,隐性主基因增加主茎穗长的效应平均为1.47,微基因遗传效应为2.83cm,隐性主基因个体主茎穗长表现为长穗。  相似文献   

On the history of land amelioration in Russia     

N. G. Minashina 《Eurasian Soil Science》2006,39(1):105-109

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林业院校地理信息系统专业GIS课程教学研究     

肖化顺  赵春燕 《国家林业局管理干部学院学报》2006,5(3):21-23

中南林业科技大学地理信息系统本科专业于2003年开始招生,地理信息系统(GIS)是这一专业的核心课程.地理信息系统课程应在地理信息系统专业学生具备初步的专业基础知识、基本训练及实践基础上开设,课程内容体系结构主要由地理信息系统结论、空间信息基础、空间数据库、GIS空间分析原理与方法等构成.要重视教材建设及实践性教学环境建设并对传统数学方法进行改革.  相似文献   

奶牛布鲁氏菌病的病原分离鉴定及血清学研究     

胡杰  黄夏  陈玉华  赵国明  温丽霞 《中国动物检疫》2003,20(10):21-23

通过细菌分离、动物试验、细菌学与血清抗体之间相互关系、温度与感染动物之间相互关系等分离一例奶牛布鲁氏菌。发现细菌学与血清抗体呈平行关系，试管凝集反应与补体结合反应存在一定差异，感染动物14天出现波浪热，持续到剖杀前(31天)。  相似文献   

THE FOURTH INTERNATIONAL CONGRESS OF ENTOMOLOGY     

Herrick GW 《Science (New York, N.Y.)》1928,68(1759):237-244

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THE TRAVERTINE RECORD OF BLAKE SEA     

Macdougal DT  Sykes G 《Science (New York, N.Y.)》1915,42(1073):133-134

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AUTHORS' ABSTRACTS     

Fulcher GS 《Science (New York, N.Y.)》1940,91(2356):191

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COPYRIGHT     

Leland WG 《Science (New York, N.Y.)》1940,91(2357):215-216

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西宁地区抱子甘蓝栽培技术     

赵志萍 《青海农技推广》2004,(3):40-40,45

抱子甘蓝是以小叶球供食的蔬菜，别名芽甘蓝．属十字花科芸薹属，二年生草本植物，是甘蓝的一个变种。生长条件与甘蓝大致相同，性喜冷凉气候条件．耐寒性强，不耐炎热，生长适宜温度18-22℃，短期能耐-13℃的低温，芽球形成期的适宜温度为15-20℃，长日照、高温、强光不利于芽球形成。  相似文献   

Skeletal muscle fiber size in untrained and endurance-trained horses.     

J L López-Rivero  E Agüera  J G Monterde  J Vivo  M V Rodríguez-Barbudo 《American journal of veterinary research》1992,53(5):847-850

The mean area and minimal diameter of 3 histochemically determined myofiber types (1, 2A, and 2B; myosin ATPase in acid buffer) were calculated in middle gluteal muscle biopsy specimens from 62 stallions, 47 Andalusians and 15 Arabians, ranging in age from 6 to 12 years. Fourteen Andalusians and 7 Arabians were untrained, and the remainder were actively endurance-trained. The 6-month training schedules involved walking, slow trotting, and cantering. Fourteen Andalusians were moderately endurance-trained, whereas the other 19 Andalusians and 8 Arabians were strongly endurance-trained. Significant differences were not recorded between untrained and endurance-trained Arabians with respect to the area (type 1, 3,194 +/- 869 microns 2 and 3,150 +/- 370 microns 2; type 2A, 3,819 +/- 890 microns 2 and 3,380 +/- 356 microns 2; and type 2B, 4,872 +/- 962 microns 2 and 4,417 +/- 646 microns 2) or minimal diameter (type 1, 52.2 +/- 7.4 microns and 52.8 +/- 3.1 microns; type 2A, 58.1 +/- 6.7 microns and 55.0 +/- 2.8 microns; and type 2B, 65.3 +/- 6.4 microns and 63.4 +/- 4.3 microns) of the 3 fiber types, nor between untrained and endurance-trained Andalusians with respect to the area (untrained, 3,990 +/- 690 microns 2; moderately endurance-trained, 3,882 +/- 347 microns 2; and strongly endurance-trained, 3,758 +/- 510 microns 2) and minimal diameter (untrained, 58.1 +/- 4.7 microns; moderately endurance-trained, 59.7 +/- 2.7 microns; and strongly endurance-trained, 58.7 +/- 4.5 microns) of 2A fibers.(ABSTRACT TRUNCATED AT 250 WORDS)  相似文献