杂种

Large degree of variation in growth performance and hetercsis were found among different cross combinations of 6×6 diallel cross of Pines massoniana.

马尾松6×6全双列杂交的不同组合，其11年生子代在生长性状及其杂种优势上均存在较大的差异。

Seven parents and twelve hybrids produced by hand-pollination in accordance with incomplete diallel cross model were included.

材料包括7个小麦亲本和由此按不完全双列杂交模式组配、人工去雄授粉产生的12个杂种组合。

Heterosis of eight agronomic important characters of F 1 derived from different ecological types in japonica rice and combining ability of their parents were studied by an 8×8 diallel design.

用 8个不同生态类型的粳稻品种配成 8× 8双列杂交，研究 8个重要农艺性状的杂种优势以及亲本的配合力。

Genetic diversity among 46 rice clusters was studied using the AFLP molecular marker, and relationship between genetic distanceand hybrid performance in a diallel set of crosses between them was assessed.

利用AFLP分子标记对46个水稻品种进行遗传多样性分析，继而研究分子标记遗传距离与按照NC设计获得的195个杂交组合的产量及特殊配合力的相关性，探讨预测杂种优势的可能性。

Sixty-two varieties were used to analysis the heterosis of the Fl hybrids, which were created in a diallel set of cross between 9 ecological types.

利用9个不同生态类型的62份水稻亲本材料，以生态型为单位进行双列杂交，配制988个组合，研究杂种一代的对照优势和超中亲优势。

C. hytivus exhibited the typical hybrid dimeric banding pattern. The difference in band intensity between C.

新种的AAT酶谱在两个多态性位点表现了典型的杂种二聚体谱型。

These genes are related to many plant functions, indicating that the heterosis was related with many metabolization pathways.1.2 The quantity of discrepant genes showed that the genetic discrepancy was notalways the same with the discrepancy of expressed genes, indicating that small-scale genetic discrepancy maybe result in large-scale genes discrepantly expression; in other way, some genetic discrepancies might not embodied on the discrepant genes in the experiment.1.3 Nine and eight discrepant genes were found respectively in the superior bulkand minor bulk in the dominant level.

1.2 各张芯片差异表达基因数量表明遗传差异与表达谱差异不尽一致，可能较小的遗传差异可以造成表达谱的巨大改变，而有些遗传变异可能没有在表达谱上表现出来。 1.3 从优势集团和负优势集团中分别找到9个和8个具显性表达水平的差异表达基因，研究表明显性表达水平的差异表达基因的聚合与杂种优势的表现没有相关性。

Orientale additional and substitutional lines. chromosome number of 96 BC2 F3 individuals were accounted. Fifteen plants with 2n= 43 and eight plants with 2n= 44 were checked out. GISH results of the individuals with 43 chromosomes showed that they blonged to three different monosomic additions. Two disomic additions, ine double-monosomic addition, one trible- monosomic addition and one monosomic addition were found in the 2n = 44 individuals. One double-monosomic substitution and one monosomic sustitution were obtained.

为了筛选小麦-旱麦草异附加系、异代换系，对普通小麦品种Fukuho×东方旱麦草属间杂种的BC2F3代材料的96粒种子进行了染色体数目的检测，共检出15粒2n=43的种子，8粒2n=44的种子，进一步对以上材料进行的基因组DNA原位杂交，共鉴定出3个单体附加系，2个二体附加系，1个双单体附加，1个小麦三体单体附加，1个附加3条东方旱麦草染色体的小麦单体，在染色体数为42的个体中，检测出1个单体代换，1个双单体代换。

In the studies on transferring and identifying alien chro-mosomes into wheat,the combined use of mitotic and meioticchromosome N-banding is also successfully practiced in deter-mination of T.durum-H.villosa amphipoid,five wheatalien disomic additions with H.villosa chromosomes,〓〓,alien sulstitution line with chromosome 〓 andsome translocation lines.

在外源染色体导入、鉴定研究中，利用根尖有丝分裂中期染色体和花粉母细胞减数分裂中期Ⅰ染色体的N-分带，快速、准确地鉴定了硬粒小麦一簇毛麦双二倍体、普通小麦一簇毛麦异耐加系V〓、V〓、V〓、V〓和V〓，普通小麦一簇毛麦异代换系V〓以及一些具有易位的杂种后代。

Polymorphic sites were found only in Yorkshire, Landrace, Duroc and their hybrids, but that were not found in Mm pig and wild pig.

仅在大白猪、长白猪，杜洛克和杂种猪中发现多态性位点，而在民猪和野猪中未发现。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。