Research of Seed Testa Structure and Storage Material of Peanut Germplasm with Different Resistance to A. flavus

摘要

There was an obvious relationship between seed testa structure, storage material and resistance to A. flavus of peanut. Results showed that seed testa of peanut germplasm with high resistance (HR) to A. flavus infection had thicker wax layer, integrated and tight epidermis layer, regular vascular tissue range. However, the seed testa of peanut germplasm with high sensitivity (HS) to A. flavus had the reverse results, and results of those with medium resistance (MR) to A. flavus lay in between, but changes of testa thickness were not significant among different resistance kinds. Results also showed that some seed storage materials were closely related with resistance potential to A. flavus. It seemed that varieties with higher resistance to A. flavushad higher oleic acid and protein content, lower linoleic acid and fat content. Content of palm acid, total sugar and V_E did not show positive relationship with the resistance to A. flavus.