杂种优势的产生与亲本和子代间基因的差异表达密切相关。
Differential gene expression is mainly responsible for heterosis between parents and progeny.
根据过氧化物酶同工酶或酯酶同工酶谱带的变化很难预测玉米杂种优势的表现。
It is difficult to forecast maize heterosis based on the changes of peroxidase and e...
水稻是杂种优势利用最成功的作物之一，近几年对水稻杂种优势的遗传学基础也有很深入地认识。
Rice, one of the most important crops and showed greatest success on heterosis application, has deeply studied for the genetic basis of heterosis in recent years.
与细胞质雄性不育类型相比，隐性细胞核雄性不育具有独特的优点，在作物杂种优势的利用中具有一定应用潜力。
Comparing with cytoplasmic male sterility, recessive genie male sterility has application potentiality in heterosis utilization in crops due to its special characteristics.
玉米是主要的粮食和饲料作物，经济地位十分重要，玉米杂种优势的利用是农作物杂种优势利用最成功的例证之一。
Maize was one of the most important food and feed crops with important economic significance, and the utilization of maize heterosis was one of the most successful examples in crops.
雄性不育是油菜杂种优势利用的一条重要途径，在杂种优势利用中亲本选配是配制强优势组合、有效利用油菜杂种优势的关键环节。
Male sterility is an important way of utilizing rapeseed heterosis. In the breeding of hybrids, how to choose parents is a key step to gain strong heterosis and efficiently use heterosis.
这为进一步深入探讨杂种优势形成机理奠定了一定的基础。
The results obtained in this study will be helpful for further elucidating mechanism of heterosis.
小偃54是一个具有杂种优势、品质优良的小麦品种。
Xiaoyan 54 wheat is of high quality and has an advantage of crossbreed.
甘蓝型油菜主要农艺和产量性状的杂种优势及其分离世代的分析。
Heterosis and segregation on agronomic and yield traits in brassica napus l.
互作效应普遍存在，是烟草性状杂种优势表现的主要原因之一。
The epistatic effects could not be ignored in tobacco breeding. They were one of main causes of heterosis for most characters.
从本实验的结果来看，差异表达模式与杂种优势之间并没有必然的联系。
The results indicated that there was no certain relationship between differential gene expression patterns and heterosis.
在亲本选配中，尽量提高双亲性状的表现，以取得较大的杂种优势。
The biggest heterosis will be obtained by improved the performance of parents' characters in parents' apolegamy.
但因光a纯合态的低衣分，其亲本繁殖和杂交制种时皮棉产量降低，故光a不育系在杂种优势中的利用有优势又有劣势。
However, Guang a has disadvantages as well as advantages in the utilization of heterosis because of its low lint percentage in parent propagation and hybrid seed production.
探讨了遗传距离对向日葵亲本选配和杂种优势预测的可能性及实用价值。
The possibility and practical value of the forecast of parents selection and hybrid vigour of sunflower were discussed.
本文还讨论了新不育系的遗传组成及在油菜杂种优势利用和机理研究方面的重要作用。
The genetic composition of the new sterility and its mechanism and the prospect of its utilization are discussed.
应用化学杂交剂(CHA)诱导雄性不育是小麦杂种优势利用的重要途径之一。
Male sterility of wheat inducing by Chemical hybridization agents (CHA) is one of the main ways to produce hybrid wheat seed.
杂种优势是生物界普遍存在的十分重要的生物学现象，并在多种动植物中得到成功地利用。
Heterosis, a widely existing biological phenomenon, has been successfully exploited on breeding of many plants and animals.
应用双列杂交设计，研究了遗传来源不同的12个甘蓝型油菜品种间66个双列组合的单株籽粒产量及产量性状的杂种优势。
Heterosis of seed yield and its components of 66 crosses, from a diallel cross design of 12 parental varieties of Brassica napus L. were studied.
棉花的杂种优势明显，已在生产上广泛利用。
Heterosis in cotton is noticeable and has been widely used in cotton production.
推导了三元杂种优势率经典估计方法的新的统计检验公式。
A new statistical formula is constructed for testing the significant level of estimated results of classic estimation of three-way heterosis.
实践证明，杂种优势利用是提高油菜产量的主要途径。
To achieve this, heterosis utilization is proved to be a very effective way.
因此，在利用分子标记技术预测油菜的杂种优势时，SRAP标记效果更好。
Thus, for the prediction of yield heterosis, SRAP markers are better than SSR markers.
因此利用基因工程手段克隆育性相关的基因，并加以利用创造理想的棉花雄性不育系类型，可能成为促进杂种优势利用，提高棉花产量和品质的新途径。
Therefore, cloning male fertility-related genes and used to create the ideal male sterile line is a new way of improving the cotton yield and quality by cotton heterosis application.
杂种优势作为自然界一种普遍的生物学现象，是提高作物产量的一种有效途径。
Heterosis as a common biological phenomenon in nature is an efficient approach to increase crop yield.
从基因组基因平均水平和分子水平上揭示杂种优势形成的遗传基础，为棉花杂交种育种提供理论依据。
Furthermore, the genetic basis of heterosis was revealed on average level of gene and molecular level. All these results provided theoretic basis for cotton hybrid breeding.
研究结果对我国肉用绵羊资源的评估、保存和预测杂种优势具有一定的指导意义。
The results may be useful as an initial guide in evaluating the level of genetic variation, developing conservation strategies and predicting heterosis.
讨论了胞质效应在两系杂种优势利用上的可能性。
The probability of cytoplasm effect used in hybrid wheat was discussed.
本文研究了向日葵各性状的杂种优势及其变异程度，杂种优势同亲本各特征值的相关性。
The experiment was carried out to investigate each character of sunflower and its variation extent, and the correlation of the heterosis and the parent character value.
目前研究普遍认为，亲本之间存在的差异应该是杂种优势产生的基础。
Current researches think that the different genetypes between the parents should be the foundation of heterosis in plants.
小麦作为世界主要的粮食作物，对其杂种优势利用的研究，特别是雄性不育机理的研究，一直是众多杂交小麦育种者设法攻克的难关。
Wheat as the main food crop, studying its utilization of heterosis and male sterility is the matter that many breeders have been trying to overcome.
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