1) Heterotic group
杂种优势群
1.
The heterotic groups of waxy maize in Jiangsu province were Tongxi 5 group,Hengbai 522 group and other groups,with Tongxi 5 group and Hengbai 52 group being the main group.
分析了通过省级以上审定的迄今江苏省自育的14个糯玉米杂交种的血缘关系及杂交种选系的配合力,结果表明:①江苏省鲜食糯玉米育种的杂种优势群为通系5类群、衡白522类群和其它类群,其中通系5类群和衡白522类群为主要杂种优势群;②杂优模式为通系5类群×衡白522类群、通系5类群×其它类群、衡白522类群×其它类群、其它类群×其它类群,其中通系5类群×衡白522类群是主要杂优模式。
2.
The heterosis analysis showed that the inter-group heterosis was greater than the intra-group heterosis,which indicates the feasibility of dividing rice heterotic groups by using SSR markers.
杂种优势分析表明,群间优势大于群内优势,说明利用SSR标记划分籼型水稻杂种优势群是可行的。
3.
Heterotic grouping of 22 maize inbred lines, including 18 quality protein maize (QPM) lines and 4 domestic temperate common testers that represent four heterotic groups used dominantly in China, were classified by SSR markers.
利用 SSR标记技术对 18个优质蛋白玉米 (QPM)自交系和 4个代表国内主要杂种优势群的普通玉米标准测验种进行杂种优势群划分 ,研究热带、亚热带 QPM与温带玉米自交系之间的遗传关系。
2) heterotic groups
杂种优势群
1.
Methods of classification of maize inbred lines into heterotic groups;
玉米自交系划分到杂种优势群的方法
2.
It showed that most of the resistant materials were from P group and Tangsipingtou group, while most of the highly susceptible lines were from Lancaster, Reid, and Zi330 groups, so the 5 heterotic groups were classified to 3 types, P group was belonged to the highly resistant type, Tangsipingtou group was belonged to the resistant type, the other 3 groups were belo.
抗性鉴定结合杂种优势群的划分结果表明,大部分的抗病材料来自P群和唐四平头类群,而瑞德群、兰卡斯特类群和自330类群的大部分自交系均高感玉米矮花叶病,不同杂种优势类群间的抗性有极显著的差异,据此将中国主要的五大优势群自交系粗略地划分为三大抗性类型,一是高抗类型,仅包括P群的自交系;二是中抗类群,仅包括唐四平头群的自交系;三是感病类群,包括瑞德、兰卡斯特和自330三大类群的自交系,在此基础上对玉米矮花抗性杂优模式进行了探讨。
3.
The genetic diversity of 26 popcorn inbred lines selected from 8 Chinese germplasms and their classification of heterotic groups were studied using SSR markers.
利用113对SSR多态性引物研究了来源比较广泛的26个自选爆裂玉米自交系的遗传多样性,并初步进行了杂种优势群划分。
3) heterosis group
杂种优势群
1.
Study on heterosis groups of key parental lines in indica hybrid rice(Oryza sativa L.)in China;
我国常用杂交籼稻亲本杂种优势群的初步研究
2.
Luda Red heterosis group, which is on of the five high quality corn inbred lines, has contributed a lot to breeding high yield and superior quality hybrid.
旅大红骨杂种优势群自交系是我国玉米的五大优良自交系之一,为培育高产优质杂交种做出了巨大贡献。
4) heterosis groups
杂种优势群
1.
Study on heterosis groups of maize inbred lines in Guizhou;
贵州10个骨干自交系杂种优势群的合理划分
2.
Heterosis groups definition and three methods which were mostly utilized in constructing heterosis groups were introduced in the paper.
介绍了杂种优势群的定义及利用农艺性状,系谱关系和DNA分子标记技术构建杂种优势群的方法。
6) Heterosis
[英][,hetə'rɔsis] [美][,hɛtə'rɑsɪs]
杂种优势
1.
Analysis on Heterosis and Correlation of Major Agronomic Characteristics between Parents and Offspring of Tobacco;
烟草主要农艺性状的杂种优势及亲子关系分析
2.
Analysis of Combining Abilities and Heterosis of Some Agronomically Important Traits in Brassica napus L.;
油菜主要农艺性状的配合力及杂种优势分析
3.
Heterosis of Maize Root Activity and Its Relationship with Photosynthetic Characteristics;
玉米根系活力杂种优势及其与光合特性的关系
补充资料：杂种优势(heterosis or hybrid vigor)
| 杂种优势(heterosis or hybrid vigor) 遗传基础不同的两个亲本杂交产生的杂种在某些性状上优于其亲本的现象。 杂种优势的表现大体上有三种类型： ①表现在远缘杂交的后代中，即杂种营养体的大小和数目、生长速度和有机物积累的强度等显著超过双亲，但是这类杂种的繁殖能力并没有提高，甚至还要低于双亲。有人称这种现象为杂种的旺势。 ②表现为杂种的繁殖器官的发育优于亲本，如有较高的结实率。 ③表现为进化上的优越性，如杂种的生活力、适应性、竞争能力以及其它在生存竞争中起作用的因素优于双亲。 杂种优势主要表现在杂种第一代，从第二代开始杂种优势就明显下降。 杂种优势的遗传基础在于基因的不同作用形式，这包括显性效应、累加效应、上位效应、互补作用和超显性效应。在某一材料中可能由某一种效应起主导作用，另一种材料中可能由另外一种效应起主导作用。 根据杂种优势原理，通过育种手段可以使动植物提高产量、改进品质和提高劳动生产率。 |
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条