秆锈

These results demonstrated that wheat PAL played an inportant role in the induced resistance response upon infection with stem rust fungus at transcription level.

从转录水平证实了小麦苯丙氨酸解氨酶基因在秆锈菌诱导的抗性反应中具有重要作用。

The world's last major outbreak of stem rust took place in the 1950s.

世界上最大的秆锈爆发发生在1950年代。

Stem rust produces reddish brown reddish-brown spots on the stems of infected plants.

秆锈在感染的作物的茎上有微红黄色的斑点。

The volunteer wheat is also responsible forcarrying the leaf rust over summer for the winter wheat infection.

因此旅大区有时虽然有秆锈菌的越冬，但不可能是小麦秆锈越冬的主要场所。4。

Ug99,found in Uganda in 1999,is a new virulent race of Puccinia graminis f.sp.tritici on Sr31,the backbone of stem rust resistance worldwide.

Ug99是1999年在乌干达首次发现的对最重要小麦抗秆锈病基因Sr31有强毒力的秆锈菌新小种。

The impacts of urediniospore activity, concentration of hydrochloric acid and physiological races of rust fungi on protoplast shrinking were also studied.

研究还发现叶锈菌和秆锈菌夏孢子活力、盐酸浓度等对夏孢子原生质体浓缩状况有很大影响，且与病菌生理小种有一定的关系。

Ug99 could be called a superior virulent race to widely-used and Sr31-carrying Chinese wheat cultivars or stem rust resistant sources.The number of virulent genes contained in Ug99 was more than the total carried in all Chinese stem rust races.For instance,the virulence of Sr5,Sr9e or Sr11 was the typical races.However,besides the virulence of Sr5,Sr9e and Sr11,Ug99 contains additional virulence of Sr21,Sr31and Sr38,which have never been found in Chinese stem rust races.

Ug99堪称我国的超毒小种，我国最典型的秆锈菌小种只能分别克服或Sr5或Sr9 e或Sr11单基因抗性，而Ug99不仅具有Sr5、Sr9 e、Sr11的联合毒力，而且还具有Sr21、Sr31、Sr38的联合毒力，而我国从未有小种能克服后者的抗性。1B/1L(含Sr31)易位系曾是我国使用的重要秆锈抗源，必对Ug99高度脆弱，我国118份小麦品种在KARI的测定结果表明，高感品种频率98.3%。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。