小麦白粉病与主要农艺性状相关性的研究

小麦白粉病是小麦生产的主要病害之一。以河北农业大学近年培育出的鉴定圃中16个品种（品系）为试材，对小麦白粉病与主要农艺性状进行相关性的研究，结果表明：小麦白粉病与主要农艺性状之间存在着不同程度的相关。其中，小麦白粉病与株高、基部三节长、倒三叶长呈显著正相关(r=0.5356，r=0.5687，r=0.5157)；与倒二叶长呈极显著正相关(r=0.7181)；与不孕小穗数呈极显著负相关(r=-0.7132)；与倒二叶宽、倒三叶宽负相关不显著(r=-0.4340,r=-0.4803)。与其它性状均无相关或相关系数很小。使用分子标记技术对抗白粉病基因进行定位，并进行标记辅助育种，培育和使用抗病品种是防治小麦白粉病最经济、有效的措施，也是综合治理小麦白粉病的基本措施。

Correlated Analysis on Wheat Powdery Mildew and Some Main Wheat Agronomic Traits

Powdery mildew is one of the most serious wheat diseases through the world. In this article, 16 wheat varieties (lines), breezed by our research group, were used to detect the correlation of wheat powdery mildew and some main wheat agronomic traits. The results showed that the correlation between wheat powdery mildew and the wheat plant height, base third stem length, third top leaf length were positive significantly(r=0.5356,r=0.5687，r=0.5157), and the correlation between wheat powdery mildew and the next top leaf was positive(r=0.7181). However, the correlation between the wheat powdery mildew and the sterile spike was negative significantly(r=-0.7132). The correlation between the wheat powdery mildew and the next top leaf wide, third to top leaf wide were no existed(r=-0.4340,r=-0.4803). Using molecular mark technology to locate the powdery mildew gene and aid wheat breeding is one of the most useful methods in protecting wheat powdery mildew disease.