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Therefore, the above lines can be utilized as important parents to Sichuan wheat breeding for stripe rust resistance.

文中还讨论了小麦育种中的间接选择在创制小麦黑麦染色体代换易位系上的可行性。

Presently, the better methods against the wheat stripe rust are using resistance cultivars and chemicals.

中国是世界上最大的小麦条锈病流行区，小麦条锈菌流行体系是一个相对独立的体系。

Wheat stripe rust, caused by Puccinia striiformis f.sp. tritici West., is one of the most important wheat diseases in the world, especially in China.

小麦条锈病是一种世界性病害，中国是世界上最大的小麦条锈病流行区，条锈菌又是一个相对独立的流行区系。

The single micronucleus and multi-micronucleus were observed at the interphase. The chromosome aberrational cells including chromosome fragment, lagging chromosome, chromosome bridge and circular chromosome were found during the mitosis. RAPD analysis of seedling genomic DNA variation in M 2 generation of three mutants showed their DNA sequences had changed. The result confirmed that the implantation of 7Li +3 ions could induce genetic mutation in wheat.

对幼苗根尖细胞学研究观察，获得单桥、双桥、桥断裂、落后染色体、三级、断片和微核等畸变类型；对已获得的小麦突变株，分别进行M2 代DNA分子的RAPD分析，结果发现DNA均发生变异，证明7Li+ 3 注入通过内靶核反应能够诱发小麦在分子水平上产生遗传变异。

In seedling of wheat, implementing the test of Nonpreference by means of releasing alate aphids in order to make them freely select location, the results indicate that most of the wheat varieties have not distinct difference each other, except that Hongmanghong and 885479-2 have distinct difference with others.

在小麦苗期，通过在网罩内人工释放有翅成蚜让其自由选择寄主进行不选择性试验，结果显示，在测定的15个不同抗性材料中仅红芒红和885479-2两个品种表现出与其它品种有较大差异，而大多数小麦品种之间的不选择性没有显著差异。

In order to provide a reference for the selection and breeding, exact evaluation and approvement of new wheat varieties, making use of the grey correlative degree analysis in regional trial from 2003~2004, the grain yield and 12 main characters of 11 new varieties of wheat were evaluated comprehensively.

为给小麦新品种的选育和确切评价以及品种审定提供参考依据，应用灰色关联度分析法，对参加2003~2004年度山东省高肥乙组区域试验11个小麦新品种的13个主要性状进行了综合评估。

One of the important aims of wheat quality breeding is improve the breadmaking quality.

小麦面包烘烤品质的改良是小麦品质育种的重要目标之一。

The barley chromosome in wheat was identified by genomic in situ hybridization in which biotin labelled total genomic DNA of barley betzes was used as probe and the unlabelled total DNA of common wheat Chinese Spring as blocking DNA. A series of wheat materials were tested as follows; two disomic alien substitution and monosomic alien addition lines, 2n=43; two monosomic alien substitution lines.

用生物素(Biotin-16-dUTP)标记的大麦Betzes基因组DNA作探针，以普通小麦中国春总DNA作封阻进行基因组原位杂交(Genome in situ hybridiz ation，简称GISH)，从13株小麦-大麦杂交后代中鉴定出2个含有3条大麦B etzes2H染色体的材料(2n=43)；2个2H单体异代换系(2n=42)；7个2H二体异代换系(2n=42)。

Powdery mildew is a serious disease of wheat in China, which is caused by the fungus Erysiphe graminis DC.

由白粉菌Erysiphe graminis DC引起的小麦白粉病是我国小麦生产中的严重病害。

In order to understand the validity of the resistant genes to wheat powdery mildew in Shanxi province, in greenhouse condition, cleistothecia released ascospores were used to infect wheat seedling. The frequencies of virulence genes for 166 isolates of Erysiphe graminis f. sp. tritici from different ecological areas of Shanxi province were tested.

为明确小麦白粉病抗性基因在山西省的有效性，在温室条件下，通过闭囊壳释放子囊孢子侵染麦苗发病，利用28个已知抗病基因品种对分离自山西省不同生态区的166个小麦白粉病菌株进行了毒性基因频率测定。

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。