Abstract:采用5×5完全双列杂交设计,利用Du-7型分光光度计多组份分析程序,单粒分析了5个直链淀粉含量不同的水稻品种(含1个糯稻)的F_1直链淀粉含量及其基因剂量效应,以及7个正反交F_2,B_1F_1,B_2F_1分离世代直链淀粉含量的遗传。结果表明:正反交F_1直链淀粉含量基本处于双亲之间,直链淀粉含量随基因剂量效应增加而增加。F_1主要表现为第一,第三剂量显著或极显著增加直链淀粉含量。基因剂量效应还明显存在于F_2,B_1F_1,B_2F_1各分离世代,且直链淀粉高含量对低含量或对糯性均表现为单一不完全显性基因遗传,还可能受一些微效基因或修饰因子影响。直链淀粉极低含量对低含量可能受单一不完全显性基因控制,也可能表现为多基因控制的数量遗传。

Abstract:This article is a summary of many years of researches carried out in the laboratory of cotton breeding, Huazhong Agricultural University. It covers seven aspects as somatic morphogenesis, factors affecting callus initiation and somatic embryogenesis, plan

Abstract:采用主成分分析，把甘蓝型油菜４９个杂交组合的１２个主要农艺性状和品质性状归纳为５个主成分，即产油因子，角果因子，长度因子，种质因子，粒质因子，它们约占总遗传变异量的９０％。根据各主成分遗传贡献率的大小，以主成分为单位选育高产，优质油菜品种，应首先注意选择全株角果总数和主序角果数较多的，产油量高的杂种，结合选择主序较长的后代材料，然后选择分枝数较多的双低优质。根据上述选择原则，已选出１０个产油量高，

Abstract:This project started with the collection of data on the fluctuation of rice blight, the rice planting districts, the local agricultural conditions and the key element of meteorology in Hubei province. Analysis of the data classified Hubei into four geogra

Abstract:以幕阜山5个海拔高度的土壤粘粒复合体为对象,用等温平衡吸附法研究了磷吸附量随加入磷浓度和平衡时间改变的变化规律。结果表明;①随着海拔高度增加,土壤粘粒的最大吸磷量由2.48 mg·g~(-1)依次增大到9.38 mg·g~(-1),达到饱和吸附所需加入的磷浓度增高,最大解吸磷量却逐渐降低,磷的解吸率减小。②根据土壤粘粒吸附磷速率的不同可将供试样品的吸磷过程划分为3个阶段,在24小时内的吸磷量占480小时吸磷量的72%～85%。海拔越高的土壤粘粒,快反应速率越高,缓慢吸附的时间越长。同一样品经不同时间吸附的磷解吸率变幅不大。③供试粘粒吸磷量随平衡液浓度和平衡时间的变化特征可用Langmuir,Temkin,Freundlich,Elovich等方程描述,相关系数在0.94～0.99之间,达极显著水准。④不同海拔土壤在磷吸附量、吸附速率和吸附强度等方面的不同,主要与土壤粘粒复合体中吸磷载体的含量差异有关。

Abstract:The types of Fe oxides and their relation to phosphate adsorption or desorption on clay fractions were investigated by means of XRD and chemical analysis methods. Results indicated that the type of Fe oxide was only goethite in yellowbrown soil. The domin

Abstract:Specific Symptoms of boron dcficiency in sunflower appear as some deformations of leaves and pollen. The results showed that when boron was deficient, sunflower leaf stomaes abnomally changed and the glands on the leaf cracked and wrinkled. The chloroplas

Abstract:在土培和水培条件下，研究了硼，钾营养相互作用对油菜叶片过氧化氢酶和过氧化物酶活性，幼苗根膜透性及抗逆性的影响。结果表明，在严重缺硼土壤上，硼或硼，钾配合施用显著降低油菜苗期叶片过氧化物酶活性，提高过氧化氢酶活性。同时，硼钾配合对保护油菜幼苗的根膜结构，增强抗温度的逆境能力也有显著影响。

Abstract:供试农场生态农业系统由加工业，牲猪，沼气池，桔园，鱼池和农田６个系统组成。本文运用“黑箱理论”和方法，对６个子系统的投入能量，产出能量，能量效益及投能结构进行了分析。全系统的能量产投科为０．８１，光能利用率为１．５５％，产品能与总投能之比为３７．８％，单位产值含能量为１８８．３ＧＪ／万元，系统投入的有机能占总投能的９５％。从系统的Ｎ素循环和动态平衡分析表明：农田，桔园的Ｎ素输入均大于输出，Ｎ素处于

Abstract:Forty pigs were used to study the possible relationship between plasma pyruvate kinase (PK), phosphofructokinase (PFK) and lactate dehydrogenase (LDH) and halothane Genotype. The activities of plasma PK and LDH in HAL~(nn) pigs were significantly higher t

Abstract:Twenty porcine muscle samples were used to study the possible relationship between muscle pyruvate kinase (PK) phosphofurctokinase (PFK) and lactate dehydrogenase (LDH) activities and PSE meat. Forty five minutes after slau ghter, muscle PK activity and P

Abstract:油梨果实在７℃下贮藏一定时期，取果实样品抽提总ＲＮＡ，通过ｏｌｉｇｏ ｄＴ纤维素柱纯化，获得ｐｏｌｙ（Ａ）＾＋ｍＲＮＡ，利用λＺａｐ－ｃＤＮＡ合成试剂盒合成双链ｃＤＮＡ，再将ｃＤＮＡ连接到克隆载体Ｕｎｉ－ＺａｐＸＲ上，构成与油梨果实成熟有关的ｃＤＮＡ文库，同时，利用纤维素酶和乙烯形成酶克隆探针，对文库作了筛选。

Abstract:The aboritve seeds of mature fruit of 14 citrus cultivars were cultrued in vitro. The rate of embryogenic calli and embryoids formation was defferent with cultivars. The effects of malt extract, glutamine and gibberellic acid on embryogenic calli and embr

Abstract:Based on literature study and expeditionary survey, the author described in detail various type of Prunus mume including wild, semi-wild types, some valuable fruiting types and fruit-flower types. These Prunus mume species were found to distribute in regi

Abstract:用ＰＥＧ促融剂使经硫酸二乙酯灭活的黑曲霉ＡＭＳ－１１的原生质体与细胞分裂中期折啤酒酵母ＲａｓｓｅⅫ原生质体融合，在选择性培养基上获得了能利用羧甲纤维素作唯一碳源的杂种酵母菌株ＦＡＳＳ１及ＦＡＳＣ１，经测定其ＤＮＡ量，蛋白质电泳谱带，生长曲线和碳源同化等项目，它们将具有双亲菌株的特征性状。

Abstract:Bottom grating intake of the conventional type has the drawback that river bed load may block up the bar screen and cause sedimentation in diversion canal. Based on the analysis of the characteristics of moutain stream, we propoes in this paper the bottom

Abstract:A method was reproted for the separation of 4-hybroxyindole-3-methylglucosinolate from rapessed by column chromatography with DEAE sephadex A-25 as solid phase and potassium sulfate as mobile phase.

Abstract:以龟井温州作为接穗,基砧为枳,采用的中间砧有大翼叶香橙、务和香橙、枳、宜昌橙、金柑和永顺枳橙,调查、测定了各中间砧组合的亲和性,树体及枝梢生长表现、产量和果实品质。综合考虑,以务和香橙、枳作中间砧表现较好。

Abstract:This paper reports the background values featture and concentration of As in different soil groups of Hubei provence, the regional distribution feature of As and interrelationship of As with other metal elements and physical-chemical properties of soils a

Abstract:应用完全双列杂交设计,对松毛虫赤眼蜂几个种群间繁殖性状的杂交效果进行了研究。通过杂种优势率的统计检验及亲本一般配合力、特殊配合力的分析,得出10个杂交组合中的最优组合为JNYT11×LT,JNYT11×XT。

Abstract:Pollen fertility of Nongken 58S and W6154S were observed in phytotron following treatment of plants at different development stages with both high and low temperatures as well as longday photoperiod. The results suggested that the thermosensitive phase of

Abstract:１９９０－１９９１年分析了农垦５８Ｓ及其转育的光（温）敏核不育系相互杂交的Ｆ１，Ｆ２，Ｆ３等植株在武汉自然长光照或遮光短日照条件下的育性表现，结果表明，粳型光敏核不育系７００１Ｓ，１５１４Ｓ，３１１１１Ｓ和３３００１Ｓ的光敏不育基因均来源于农垦５８Ｓ，相互间还存在着微效修饰基因的差异，但灿型核不良系Ｗ６１５４Ｓ和Ｗ７４１５Ｓ的不育基因座位可能不相同，Ｗ７４１５Ｓ的光敏不育基因来源于农垦５８Ｓ，Ｗ６