杂种的

The content of the abscisic acid and soluble protein, the activity of SOD all have clear changes.

低温处理后，欧美山杨杂种不同无性系叶片中ABA含量、可溶性蛋白质含量和SOD活性均发生明显的变化。

Studies on sequence changes in the early genomes of interspecific F_1 hybrid and amphidiploid in CucumisIn the present study,extensive genomic changes were detected in newly obtained allotetraploid of Cucumis,namely Cucumis hytivus Chen and Kirkbride,by AFLP analysis using 12 pairs of EcoR-I/Mse-I primers.

甜瓜属远缘杂种F_1及人工异源双二倍体早期基因组序列变化研究利用12对Eco RI/Mse I选择性引物，对甜瓜属人工异源双二倍体C.hytivus及其二倍体父母本进行AFLP分析，结果发现多倍体基因组在形成早期发生了广泛的序列变化。

The chromosome constitution on H96276-2, which is a stable line derived from a sterile wheat-Agropyron intermedium partial amphiploid Zhong 3 cross to common wheat Hui 75, was analyzed by sequential GISH and FISH.

利用顺序基因组-重复序列原位杂交技术对1个来自中3不育系和普通小麦恢75杂种后代稳定株系H96276-2的染色体组成进行了分析。

Analysis showed that the magnitude and direction of the heterosis effects were different among combinations. Moreover, there were higher heterosis which were beneficial on improving carcass and meat quality in the 1/4 Laiwu than that in the other crossbreed.

分析表明，含不同比例莱芜猪血缘的杂交组合间存在大小和方向不同的杂种优势效应，并且，含1/4莱芜猪血缘的杂交猪比其他杂交猪存在着较大的有利于胴体和肉质性状改善的杂种优势效应。

The low-P tolerance genetics of a set of 'Hexi41×Dabaidao' and RILs planted respectively in low phosphorous ferruginous acid red soil and high phosphorous soil were studied to investigate the expression of low phosphorus tolerance characteristics of hybrids under low-P stress, which provided the theory basis for the orderly improvement of rice germplasms with phosphorus efficiency.

以严重缺乏有效磷的酸性红壤开展合系41×大白稻强耐低磷杂种后代及重组近交系的遗传特性研究，以期明确低磷胁迫下杂种后代的耐低磷特性的表达，为磷高效水稻种质资源的定向改良提供理论依据。

Crossing combinations of Soybean heterosis were stadied i n 1996～2000. The first yield test indicated that the soybean had clea r heterosis . At the same time, 161 comparative high-superiority combinatio ns selected by the test amounted to 80.9%in total. And 69 combinations are amang the high-superiority crosses in total with 34%.

经过1996～2000年5年的研究，共配制杂种优势测定组合199个，通过第一次产量鉴定表明，大豆具有明显的杂种优势，并筛选出F1超高亲、超对照优势率均为正值，且二者平均值大于10％的较强优势组合161个，占全部组合的80.9％。F1 超高亲、超对照优势率均大于20 ％的高优势组合69个占全部组合的34％。

Cornell plant breeder Steven Tanksley is a co-recipient of the international Wolf Foundation Prize in Agriculture.

他以识别水稻的野生种原的基因的方法对水稻杂种优势（利用这种杂交优势已显著地增加了产量）的理解做出贡献…… Tanksley的研究导致发现这种重要的粮食作物的杂种优势的遗传基础，这是为人类利益而促进农作物培植科学发展的一项意义深远的发现。

In order to understand the molecular basis of heterosis, modified differential display of mRNA was used to characterize the difference in gene expression between cross-fertilized and self-fertilized kernels, reciprocal cross-fertilized kernels and their parents during the early stages of seed development by using 3 wheat hybrids with different level of heterosis.

本研究旨在利用mRNA差异显示技术探讨小麦杂交种子和自交种子以及正反杂交种子与其双亲在种子发育前期的基因表达差异，同时对杂种优势利用的模式作物玉米的杂交种子和自交种子的基因表达差异也进行了研究，并对典型的差异表达片段进行了克隆测序，为揭示杂种优势形成的分子机理积累了更多的资料，取得的主要结果如下

Further more, high-oilized normal corn could also be used as seed in high oil corn production.

因此，如何提高杂种优势的潜力，发展新的高产玉米生产系统成为玉米育种的重要课提高玉米杂种优势的途径主要有两种：一是继续提高自交系间杂种优势水平，对此国内外已多有研究；二是利用杂交种间优势，也就是通

The samples were partitioned into leaf, stem and sheath, stalk and chaff of spike, and grain, then microwaved for 4 min, and dried in an oven at 60℃.

施氮对氮素积累量的杂种优势没有显著的影响，但对氮素含量的杂种优势有显著的抑制效应。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。