排序方式: 共有39条查询结果,搜索用时 0 毫秒
1.
This is a report on five cases of anophthalmia (in one case accompanied by hydrocephalus and anomalies of the cerebrum) in Brown Swiss cakes. The anomalies occured within four months in two herds. Clinical signs, anatomical and histological findings are described. It was not possible to determine the cause as a hereditary condition or as an exogenous teratogenic factor. 相似文献
2.
Sakr Nachaat Ducher Mireille Delmotte Francois Vear Felicity Tourvieille Jeanne Walser Pascal de Labrouhe Denis Tourvieille 《植物病害和植物保护杂志》2011,118(3-4):141-141
Journal of Plant Diseases and Protection - 相似文献
3.
K Walser 《Berliner und Münchener tier?rztliche Wochenschrift》1965,78(17):321-324
4.
5.
Susceptible 3-week-old chicks were inoculated with cells of an avian transplantable lymphoid tumor (TLT) and then treated with serum from immune chickens, serum from control chickens, or balanced salt solution. Progressive tumor growth was observed in chickens of all 3 treatment groups. Tumor growth was followed by regression only in chicks treated with immune serum. Regression was characterized by necrosis of tumor cells, muscle regeneration, and lymphocyte and plasma cell infiltration. 相似文献
6.
G Dittus H Frieding K Walser 《Berliner und Münchener tier?rztliche Wochenschrift》1972,85(21):406-409
7.
8.
Downy mildew of sunflower, caused by the Oomycete, Plasmopara halstedii is at present controlled by major resistance genes. However, the pathogen has shown a considerable capacity for changes in
virulence and these resistance genes are overcome only a few years after they have been introduced into new sunflower varieties.
This paper presents research for quantitative, non-race-specific resistance independent of major genes. The reaction of cultivated
sunflower genotypes to field attack by downy mildew was studied over 4 years in several environments and in the presence of
the two most common races in France: 703 and 710. An experimental protocol with pre-emergence irrigation was developed, making
it possible to observe downy mildew reaction whatever the weather conditions. Significant levels of partial resistance were
observed in about 50 inbred sunflower lines among the 800 observed. These results suggest that it should be possible to select
for non-race-specific downy mildew resistance and to include it in modern varieties. However, since this non-specific resistance
is partial, it may be necessary to combine it with major gene resistance. Possible strategies are discussed to obtain durable
resistance to downy mildew. 相似文献
9.
10.