| 摘要: |
| 对小麦幼苗进行了组织病理学观察和氨基酸测定。结果表明：在初生吸器形成率、单孢菌落未成熟次生吸器数、单孢菌落梗基胞数上，慢粉品种与快病品种之间差异显著（P= 0. 05)，这些指标可作为苗期鉴定慢粉品种的指标；在初生乳突形成率和单孢菌落次生附着胞数上，慢粉品种与快病品种间无显著差异；所有参试品种，都未产生过敏性细胞坏死。未接种叶的脯氨酸和丝氨酸含量，慢病品种高于快病品种；接种叶的丝氨酸含量，慢病品种低于快病品种。 |
| 关键词: 小麦，慢白粉性，组织病理学，抗病育种 |
| DOI： |
| 分类号:S435.12 |
| 基金项目: |
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| Identification of Wheat Slow-m ildewing Cultivars in Seedling Stage |
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| Abstract: |
| The histopathological features were observed and contents of amino acide
in the wheat seedling were determined.The result showed that the rate of primary haustoria of Blumeria graminis f.sp.tritici, the quantity of secondary haustoria and the quantity of conidiophore basal cell of single-spore colony were significantly different between
slow-mildewing and highly susceptible cultivars,which can be used as the index for identification of the wheat slow-m ildewing resistance in the seedling stage.The percentage of
primary papillae and the quantity of secondary appressoria of single-spore colony were
not significantly different between slow-m ildewing and highly susceptible cultivars.All
of cultivars tested didn′t produce necrotic hypersensitive reaction of cell.The contents of
proline and serine of the slow-m ildewing cultivars in the no-inoculated leaves were higher than that of highly susceptible cultivar, the serine content of the slow-m ildewing cultivars in inoculated leaves were lower than that of highly susceptible cultivar respectively. |
| Key words: wheat, slow-m ildewing, histopathology, disease-resistantbreeding |
