棉花叶片茸毛和色素腺数量与绿盲蝽抗性的关系

Relationship between the Number of Cotton Leaf Pastels,Pigment Gland Points and the Resistance to Apolygus lucorum Meyer-Dür

通过网室抗性鉴定和室内观察,研究了不同棉花品种(系)对绿盲蝽的抗性水平及棉花叶片茸毛数量和色素腺密度与绿盲蝽抗性的关系,为抗棉盲蝽棉花品种选育和制定棉盲蝽防治技术策略提供依据。结果表明,不同棉花品种对绿盲蝽的抗性水平存在明显的差异;不同棉花品种(系)叶片茸毛、色素腺点在不同生长期均存在显著差异;棉花叶面、叶背和叶片茸毛总数在苗期与绿盲蝽抗性存在显著负相关,茸毛稀少品种对绿盲蝽的危害具有一定的抗性;叶面叶脉、叶背叶脉及整叶色素腺点数在花铃期与绿盲蝽抗性存在显著正相关。

The different resistance levels of different cotton varieties to Apolygus lucorum Meyer-Dur and the relationships between the number of cotton leaf pastels, the pigment gland points and their resistance to Apolygus lucorum Meyer-Dur were studied in the net room and laboratory. The results showed that the difference of the resistance of different cotton varieties to Apolygus lucorum Meyer-Dtir was obvious. The number of cotton leaf pastels and the pigment gland points indicated very clear difference in different cotton varieties and different cotton growing stages. The number of the cotton leaf pastels in the front and the back and the total in the seedling stage indicated the negative linear correlation with the resistance to Apolygus lucorum. The number of pigment gland points in the leaf nervure of front and back and the total in the bolling stage indicated the positive linear correlation with the resistance to Apolygus lucorum. These results could provide the basis for the cotton resistant breeding and IPM to Apolygus lucorum.