胡萝卜黄色突变体的遗传及表现研究   总被引：1，自引：0，他引：1  

沈火林  程杰山  韩青霞 《园艺学报》2006,33(4):856-858

 从胡萝卜‘新黑田五寸’品种的高世代自交系中发现了能稳定遗传的黄色突变体。遗传分析证明该黄色突变性状为单基因隐性遗传, 绿色对黄色为完全显性。黄色突变体叶片中叶绿素含量仅为正常株的29.3% ～50.1% , 且黄色不受温度光照等环境的影响。黄色突变体( yelyel) 地上部和地下部的生长量明显少于正常株系( YELYEL ) , 但在等位基因杂合时( YELyel) 与正常株系的生长量、产量和营养品质无显著差异。  相似文献   

Development of Chinese Near-isogenic Line of Rice and Their Differentiating Ability of Pathogenic Races of Blast Fungus     

LING Zhong-zhuan  T.Mew  WANG Jiu-lin  LEI Cai-ling  HUANG Ning 《中国农业科学(英文版)》2001,(1):50-56

The rice( Oryza L. ) variety, Lijiangxintuanheigu(LTH), is a universally susceptible variety. A set of near-isogenic lines (NILs) of rice which has single resistance gene for each line was developed by use of LTH as recurrent parent and Kusabue,Tsuyuake, K1, PiNo. 4, K60 and BL1, which are from Kiyosawa‘s differential varieties(KDV), as donor parents. Differentiating ability of these NILs to Philippine isolates was compared with that of their donor parents, KDV and IRRI‘ s NILs. The results of comparative studies were as follows: (1) Differentiating ability of Chinese NILs to Philippine isolates was much stronger than that of their donor parents and that of KDV. (2) Chinese NILs had similar ability to differentiate races to IRRI‘s NILs or higher differentiating ability than them. But IRRI‘s NILs almost had no differentiating ability to isolates from japonica rice-growing regions. They can not be used to differentiate races of isolates from japonica ricegrowing regions. Whereas, Chinese NILs can be used to differentiate races of isolates from both japonica ricegrowing regions and indica rice-growing regions. It was concluded that the set of Chinese NILs can be used as international differentials.  相似文献   

Utilization of Aromatic Rice in Improving Grain Quality of Hybrid Rice   总被引：3，自引：0，他引：3  

ZHOU Kun-lu  LIAO Fu-ming 《杂交水稻》2004,(Z1)

ThesuccessfuldevelopmentandcommercialuseofhybridricehasgreatlyraisedriceyieldlevelinChina .However ,ithasbeenagreatchallengeforbreederstoim provethegrainqualityofhybridricewithoutsacrificeofitsyield ,i.e .,todevelophybridricecombinationswithgoodgrainqualityaswellashighyield .AromaticricelikeBasmatiinIndiaandPakistanandJasmineinThailand ,isfamousforitshighqualityandu niquepleasantflavorofaroma ,soitishighlyfavoredbyriceconsumersaroundtheworld .Itmightbeaneffectiveapproachtoimprovethegrainqual…  相似文献   

葡萄自交与杂交后代香气成分的遗传研究     

李坤  郭修武  谢洪刚  郭印山  李轶辉  李成祥 《园艺学报》2005,32(2):218-221

 利用气相色谱- 质谱- 计算机联用系统(GC-MC-CS) 对两个自交组合、1个杂交组合亲本及其后代的香气成分进行研究。结果表明: 同一组合中不同香气成分的分离情况不同, 同种香气成分在不同组合中的分离情况也不完全相同。果实香气成分的遗传主要表现为分离( 1∶1、1∶3、3∶1、15∶1) 与不分离两种方式, 发生分离的成分有些是由单基因控制的, 有些是由多基因控制的。  相似文献   

西瓜核型雄性不育两用系POD同工酶研究   总被引：1，自引：1，他引：1  

马建祥  张显  张勇  杨建强 《中国瓜菜》2005,(4):30-32

用PAGE(聚丙烯酰胺凝胶)电泳技术,研究了西瓜核型雄性不育两用系不同器官的POD(过氧化物酶)同工酶酶谱差异。试验结果表明,不育株与可育株主要差异在雄花蕾,表现为不育株较可育株多2条活性强的酶带;其他器官差异小,仅表现为酶谱带强弱不同。并对POD同工酶与雄性不育性的相关性进行了研究。  相似文献   

黄瓜白粉病抗性遗传机制的研究   总被引：13，自引：1，他引：13  

张素勤  顾兴芳  张圣平  邹志荣 《园艺学报》2005,32(5):899-901

 采用多世代联合分析方法, 通过3个抗感杂交组合研究了黄瓜白粉病抗性的遗传规律。结果表明, 3个组合的最适遗传模型皆是两对加性- 显性- 上位性主基因+加性- 显性- 上位性多基因模型(E2120模型) 。组合Ⅰ的主基因遗传率为64.26% ～95.47% , 两对主基因感病相对抗病为部分显性, 两主基因的加性效应及第二主基因的显性效应较大, 两主基因的加性×显性互作效应也较大。组合Ⅱ和组合Ⅲ两主基因的遗传率分别为95.35%和96.04% , 两主基因的加性效应、显性效应和显性度较为相近。  相似文献   

Inhibitory effects of LDL-ACM complex on subcutaneous implanted tumors in nude mice()     

JIANG An-li  KANG Lu-dong  ZHAO Chun-hua  BI Wen-xiang  HU Xiao-yan  KONG Feng  XU Song-de 《园艺学报》2003,19(1):55-58

AIM: In order to evaluate the applicable value of LDL as a targeted vehicle for chemotherapeutic agents, we investigated and compared the inhibitory effects of LDL-ACM complex and free ACM on nude mice's subcutaneous implanted tumors derived from gastric cancer cell lines, SGC-7901 and NKM-45. METHODS: LDL-ACM complex was prepared and the tumor model of nude mice was established by subcutaneous implantation of SGC-7901 and NKM-45. Then, the groups of nude mice developed subcutaneous implanted tumors were received either LDL-ACM complex or free ACM. Subsequently, the tumor size, weight and leukemia cell counts were measured and the rates of tumor-inhibition and the survival were compared among the groups. RESULTS: The inhibitory effects of LDL-ACM complex on the tumors, especially on SGC-7901 implanted tumors were much more obvious than that of free ACM. It was also indicated that the action of LDL-ACM complex was mediated by LDL receptor. CONCLUSION: These results showed that LDL-ACM complex had significant inhibitory effects on the implanted tumors and the effect might be mediated by LDL receptor.  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   

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   

果树抗寒性的遗传与育种研究进展   总被引：23，自引：0，他引：23  

沈洪波  陈学森  张艳敏 《果树学报》2002,19(5):292-297

冻害胁迫下果树体内的水分从生长的组织流失迁移,在其周围区域形成冰核保护生长组织,不形成冰核发生冻害;ABA和Ca(2+)在植物低温胁迫的信号转导中起重要作用;DTA法测定的LTH温度与花芽的半致死温度一致;果树杂种后代的抗寒性遗传具有母性遗传特点。还总结了近年来发展起来的果树抗寒性鉴定的有效方法以及部分抗寒资源,以期为果树抗寒育种的亲本选择及不同品系抗寒力的早期鉴定提供参考依据。  相似文献