辣椒品种海南冬季观察试验   总被引：1，自引：0，他引：1  

徐毅  杨朝进  万祥生 《长江蔬菜》2002,(6):30-31

从全国各地引进辣椒优良品种34个，川椒公司新育成良种52个，分泡椒，尖椒，干椒三组进行对比试验，泡椒中产量最高的依次是牛角51、55、38号及湘研十三号，洛椒八号等；尖椒以牛角68号，干椒以干椒2号产量最高。  相似文献   

根癌农杆菌介导绿色荧光蛋白基因转化印度酸桔的研究   总被引：14，自引：0，他引：14  

石玮  李东栋  邓秀新  伊华林 《园艺学报》2002,29(2):109-112

 通过根癌农杆菌介导将绿色荧光蛋白基因转入印度酸桔的胚性愈伤组织中, 经潮霉素筛选,获得抗性愈伤组织, 并再生植株。对这些植株进行GUS 染色、PCR 分析、绿色荧光检测和Sourthern 杂交验证, 结果表明绿色荧光蛋白已经在转基因植株中表达。  相似文献   

梨果实若干性状的遗传倾向   总被引：5，自引：0，他引：5  

李俊才  伊凯  刘成  隋洪涛  王家珍 《园艺学报》2002,29(4):307-312

 以梨12 个杂交组合和138 个栽培品种为试材, 研究几个果实性状的遗传倾向, 结果如下: 栽培品种果实含糖量集中在6 %～9 % , 平均为7. 39 %; 果实含糖量表现为数量性状, 呈正态分布, 杂种后代果实含糖量主要分布在6 %～10 % , 平均为7. 8 % , 遗传传递力平均为90. 8 %。栽培品种含酸量介于0. 08 %～0. 74 % , 平均为0. 238 %; 杂种后代果实含酸量为数量性状, 组合遗传传递力平均为69. 2 %。梨果实挥发性物质共检测出5 种酯类、8 种醇类和乙烯、乙醛、丙酮类共16 种化合物。杂种后代果实中发现了其亲本果实中所没有的戊醇成分。果实肉质性状表现为质量性状, 脆肉对软肉为显性。杂种后代表现为果点变大、密, 果柄变长, 果汁变少, 果皮厚度相当于亲中值。  相似文献   

粉蕉、大蕉和龙牙蕉的AFLP分类研究   总被引：20，自引：0，他引：20  

易干军  余晓英  霍合强  谭卫萍  黄自然  陈大成  黄秉智 《园艺学报》2002,29(5):413-417

 应用AFLP 技术, 对32 个粉蕉、大蕉、龙牙蕉品种进行了遗传多样性分析及分类研究。在分子水平上, 可将供试品种聚为6 个独立群体, 其中包括3 个分别由单一品种组成的群体(群体Ⅳ: 酸大蕉;群体Ⅴ: 孟变; 群体Ⅵ: 千旁培) ; 可以将群体Ⅰ (大蕉) 和群体Ⅱ (粉蕉) 分别划分为3 个品种群, 将群体Ⅲ (龙牙蕉) 划分为2个品种群。参照Simmonds 的形态学分类方法, 研究结果显示粉蕉、大蕉以及龙牙蕉各个品种之间存在丰富的遗传多样性, 将其划分为AAB 或ABB 等类型, 不能反映品种间的亲缘关系; 粉蕉与大蕉两个类群之间遗传距离差异明显, 将其简单的归为ABB 类型是不妥当的。  相似文献   

茄子耐热性遗传表现   总被引：19，自引：1，他引：19  

易金鑫  侯喜林 《园艺学报》2002,29(6):529-532

 采用4 份耐热性不同的茄子亲本半轮配法配制4 ×4 双列杂交, 对P₁ 、P₂ 、F₁ 、F₂ 、BC₁ 等5 个世代四叶期幼苗在温室内进行高温(平均昼/ 夜温度38. 8/ 24. 2 ℃) 处理, 同期田间栽培(平均昼/ 夜温度34. 4/ 22. 6 ℃) 。采用Hayman’s 法分析苗期耐热指数和成株期坐果率的调查数据, 表明, 茄子耐热性为不完全显性遗传, 受两对以上基因控制, 符合加性—显性模型, 其中加性效应占更主要成分。据此提出了耐热性选择方法。  相似文献   

小菜蛾抗药性研究进展     

曹毅 《长江蔬菜》2002,(1)

综述了小菜蛾抗药性的发展,抗性的消长规律,对不同种类农药的交互抗性及抗性对策。  相似文献   

Expression of alpha-smooth muscle actin in scar tissue and its relationship with apoptosis     

CHENG Biao  FU Xiao-bing  SHENG Zhi-yong  SUN Tong-zhu  SUN Xiao-qing  LI Jian-fu 《园艺学报》2002,18(11):1333-1336

AIM: To examine the expression of alpha-smooth muscle actin in scar tissue, and observe the phenomenon of apoptosis and its involvement in the process of pathological scarring and the presence of myofibroblasts or absence of cell in the dermis. To investigate the potential role of reparative cell apoptosis in hyperplastic scar formation. METHODS: The samples of scar were obtained from post-burn patients undergoing plastic operation in our burn unit recently, and the samples of control came from skin donor site of the same patient correspondingly. TUNEL assays were performed to evaluate the number of apoptotic cells in scar versus normal skin. In situ hybridization and immunohistochemistry staining technique were employed to determine the expression of different dermis cells markers in scar tissue and normal skin. RESULTS: There existed evident difference in apoptotic cells in the dermis between scars tissue and normal human skin. The expression positive cells were much more in hyperplastic scars than that in normal human skin; the apoptotic cells of proliferative stage were slight more than that of mature stage. However, in proliferative stage, the number of apoptotic cells was higher for the combination of hyperplastic scar than normally healed flat scars. But in mature stage, no obviously difference was detected between hyperplastic scar and normally healed flat scar. The monoclonal anti-α smooth muscle actin (ASMA) expression was significantly stronger in proliferative stage than that of mature stage. CONCLUSIONS: With reconstitution of dermal tissue, myofibroblasts containing alpha-SM actin disappear under normal wound healing, probably as a result of apoptosis. The myofibroblast play a critical role in wound closure and in the pathologic sequelae of healing.  相似文献   

Effect of Jiawei Sini Decoction on glucocorticoid receptor in thymocytes of chronic psychological stress rats     

YAN Can  SHI Ya-fei  LI Yan  WU Zhi-wei  WU Li-li  PAN Yi 《园艺学报》2002,18(12):1494-1496

AIM: To observe the effect of Jiawei Sini Decoction (JWSND) on glucocorticoid receptor (GCR) in thymocytes of chronic psychological stress rats. METHODS: The rats were randomly divided into 4 groups, control group (C), model group (M), group treated by JWSND C₁, group treated by ginsenosides C₂. The number of thymocyte GCR sites and the GCR nuclear thanslocation rate were detected by radioimmunoassay. RESULTS: Compared with the control group, in the model group, the thymocyte weight index lowered significantly ( P<0.05 ), and the GCR nuclear thanslocation rate was increased significantly ( P<0.01 ), but the number of thymocyte GCR sites was unchanged. Compared with the model group, thymus gland weight indexes of C₁ and C₂ were increased significantly ( P<0.05 ), while the GCR nuclear thanslocation rate lowered significantly ( P<0.01 ). Moreover, no significant difference was found in all indexes between C₁ and control group. CONCLUSION: The inhibitory effect of glucocorticoid on the thymus could be significantly reversed by JWSND via suppressing the thanslocation of GCR from cytoplasm to nucleus in chronic psychological stress rats.  相似文献   

Effects of carvedilol,cilazapril and their combination on left ventricular remodeling after acute myocardial infarction in rats     

TANG Yi-da  YANG Yue-jin  RUAN Ying-mao  LI Yong-li  ZHOU Yan-wen  TIAN Yi  GAO Run-lin  CHEN Ji-lin  CHEN Zai-jia 《园艺学报》2002,18(9):1115-1118

AIM:To compare the effects of carvedilol, cilazapril and their combination on left ventricular remodeling(LVRM) after acute myocardial infarction(AMI) in rats. METHODS: Twenty-four hours after AMI operation, 100 surviving rats were randomly assigned to: ①AMI control(n= 25), ②AMI+carvedilol(1 mg·kg^-1 ·d^-1, n= 25)(C1), ③AMI+cilazapril(1 mg·kg^-1 ·d^-1, n= 25)(Z1), and ④ AMI+combination(n= 25) groups. Sham-operated group(n= 17) were selected randomly. After 4 weeks of therapy with the drugs gastric gavage, hemodynamic and pathological studies were performed. RESULTS: There were no significant differences in MI size among the four AMI groups(all P> 0.05) Left ventricular(LV) end diastolic pressure(LVEDP), volume(LVV), weight(LVW) and septal thickness(STh) were all higher and left ventricular pressure maximal rate of rise and fall(±d p /d t) were lower(all P< 0.01) in AMI group than sham-operated group. The LVEDP, LVV, LVW and STh were all lower and ±dp /dt were higher in Z1, C1, and combination groups than those in AMI group(P< 0.05, P< 0.01), with LVEDP and STh were more lower in the combination group than in the two monotherapy group(P< 0.05, P< 0.01), but there were no significant differences in other variables among the three therapy groups. CONCLUSION: Carvedilol, cilazapril and their combination all can prevent from LVRM after AMI in rats, improve hemodynamics and LV function, with the combination superior.  相似文献   

螟虫长距茧蜂研究进展     

张安盛  冯建国于毅 张思聪 《昆虫天敌》2003,25(2):89-92

本文综述了对螟虫长距茧蜂的研究概况，包括该寄生蜂的主要生物学习性、对玉米螟自然寄生率及田间防治玉米螟效果等。  相似文献