Abstract:The objective of this research is to understand the biochemical.mechanism of seedcoat colour variation in B.napus.The quantity of anthocyanidins, polyphenols, trans-cinnamic acid and the activity of phenyialanine ammonia lyase(PAL)was measured with spectr

Abstract:本实验运用单克隆抗体ＰＡＰ法，对实验感染鸭肝炎病毒雏鸭的组织切片进行染色观察，旨在动态研究病毒在雏鸭体内的分布以及病毒与组织病变的关系。研究结果显示，感染后３ｈ，雏鸭心肌、肝、脾、肾、胰、腿部肌肉、大脑等组织的细胞浆内均出现了ＰＡＰ染色的特异性棕黄色产物，除胰脏组织切片的ＰＡＰ反应性在感染后１６８ｈ达到最高外，上述其他组织的最高ＰＡＰ反应性均在感染后２４ｈ；对同期的不同组织切片比较观察发现，肝、脾、胰外分泌腺、肾小管上皮细胞及腿部肌肉细胞的ＰＡＰ反应性比心肌及大脑神经元细胞的ＰＡＰ反应性强。由此表明，鸭肝炎病毒在感染后３ｈ达全身化，并主要侵害肝、脾、肾、胰及腿部肌肉，继而引起相应的变化

Abstract:Principal component analysis was performed for 28 traits of 201 maize variety resources in Hubei Province.The results indicated that the contribution rate of the first seven principal components to total variation of population studied accounts for over 7

Abstract:通过甘蓝型油菜×白菜型油菜种间杂交和６个世代的鉴定选择，培育了甘蓝型复果油菜９０－１２和白菜型复果油菜９２－１６。对５００株以上群体抽样调查结果表明：它们的复果株率达１００％，单株复果率达４０％以上。尽管复果油菜的角果长度、每果粒数和千粒重随着果柄上结角数目增加而减少，但由于复果油菜的单株角果数比普通油菜多３３．２０％～５６．５５％，从而使复果油菜的单株产量较普通油菜增加２９．３８％～３５．２６％。甘蓝型油菜复果性状由３对隐性核基因控制，但在甘白种间杂种１代表现母性遗传特性

Abstract:通过调查，采集，鉴定，发现竹山青死者杨上有纺锤形，长枣形，小枣形及佛手形４种倍手和肚倍蚜，红小铁枣蚜及佛手倍蚜３种倍蚜，其中纺锤形与长枣形是主要类型，且均由肚倍蚜致瘿成倍，但２种倍子在不同地区的分布比例是不同的。小枣形倍子内的致瘿蚜虫经鉴定为红小铁枣蚜，佛手形倍子是由一倍蚜新种致瘿形成的。

Abstract:The composition,contents and optical,properties of humus from several typical profiles of black clay soils in temperate zone of China were studied.The results show that HA2(black humic acid)is the main fraction of humic acid,HA-3 is the secondary and HA-1

Abstract:Optimum conditions of using HGMS for scveral zonal soils in central and southern China were investigated by means of XRD and chemical analysis methods. Results indicated that the concentrating times of iron oxides by HGMS treatment was negatively correla

Abstract:Based on Chinese Soil Taxonomic Classification (Revised Proposal,1995),a database management system about soil taxonomic classification in Hubei Province was established for PC-computer by Foxpro for windows and Visual Basic 3.0.The menu interface of the

Abstract:通过对针铁矿，高岭土及其胶结样，混合样撅经率的测定和相应计算，发现胶结样中Ｆｅ＾３＋的末配对电子数较无胶结作用的Ｆｅ＾３＋的为大，为此认为其胶结本质就是生成了氢键。

Abstract:对湖北省武汉市和老河口市的２个机械化垃圾处理场制作的垃圾堆肥的质量进行了测定与评价，并通过盆栽生物试验和大田取样调查方法对垃圾堆肥的肥力特征及礤对土壤基本性状的影响进行了研究。结果表明，所有７个供试垃圾堆肥的全氮，全磷含量均达不到国家标准的要求，少数垃圾堆肥铅含量超标，武汉市的垃圾堆肥优于老河口市。垃圾堆肥在大量施用的情况下，具有一定肥效并能提高土壤养分含量，但其有效供肥时间短，长期连续施用可能相

Abstract:在土壤含热水溶性硼为０．０９ｍｇ／ｋｇ（－Ｂ）与外加硼至１．０ｍｇ／ｋｇ（＋Ｂ）的条件下，盆栽７０个陆地棉（ＧｉｏｓｙｐｉｕｍｈｉｒｓｕｔｕｍＬ）品种，以检验品种间对缺硼敏感性差异。结果表明，７０个品种的地上部干物重敏感系数（－Ｂ／＋Ｂ×１００）为２６．６～１０２之间。如以其干物重敏感系数小于５０为缺硼敏感品种，大于９０为不敏感品种，获得敏感品种３个，不敏感品种５个。在缺硼条件下叶片硼效率（单位硼所产生的干物重）与缺硼敏感系数相关性达５％水准，不敏感品种硼效率高，敏感品种硼效率低。但无论缺硼与否，吸硼量与缺硼敏感性之间没有明显相关

Abstract:Ture availabilities of amino acids in soybean meal,cottonseed meal and rapeseed meal were determined with caecectomized and intact ducks.The results showed that they were respectively 85.3%, 87. 3% and 80.7%, and that toal endogenous amino acid amount exc

Abstract:This artical deals with water chemical properties of the Lao Jianghe Lake,reservoir of breed resources of four domestic fishes in Yangtse. River.Water temperature, transparency, pH, dissolved oxygen, chemical oxygen demand, alkalinity and hardness are mea

Abstract:The present study observed the morphology and viscosity of the viscid threads from fertilized eggs and egg cells in the third,fourth,and fifth phase of Protosalanx hyaloeranius under scanning electron microscopy.The function of the viscid threads of egg c

Abstract:对池养条件下３种规格鳗鲡的粗脂肪含量和肌肉、肝脏的脂肪酸组成进行了分析。结果表明∶鳗鲡的粗脂肪含量随着体长体重的增加而增加。肌肉的脂肪酸共测出１６种，其含量除了１８∶１ω７ω９、２０∶１ω９和１８∶２ω６不同外，其余脂肪酸在３种规格鳗鲡间相近。肝脏的脂肪酸共测出１５种，其中２２∶６ω３含量较高，分别占仔、幼、成鳗多不饱和脂肪酸总量的５０．１６％、５４．８７％和５１．８５％

Abstract:Chromosome numbers of 50 varieties and karyotypes of 5 types of Ginkgo biloba in China were studied in order to get basic information about the inheritance, variance,evolution and variety character of Ginkgo biloba.The results showed that all of the 50 ob

Abstract:Variations of chlorophylls and their decomposed products in Luzhen famous tea during processing were analyzed by TLC.The results showed that the contents of chlorophyll a and chlorophyll b decreased,and contents of pheophytin a and pheophytin b increased,

Abstract:Non-biological factors causing precipitation of bamboo juice were studied and the composition and mechanism of the precipitation were analyzed.Results showed that the nonbiological factors concerned are mainly polyrnerization of protein and polyphenols,st

Abstract:对枸杞多糖的提取分离及理化特性进行了探讨。得到４种枸杞多糖级分，即ＬＢＰ－Ｉ，ＬＢＰ－Ⅱ，ＬＢＰ－Ⅲ，ＬＢＰ－Ⅳ，用红外光谱和紫外光谱对几种枸杞多糖进行了研究，并测定了枸杞多糖的电导率，粘度。