Allelopathy Effect of Wheat Root Aqueous Extracts on Different Vigna angularis Varieties

This study aimed to investigate the allelopathy effect on the seed germination and seedling growth of different adzuki bean (Vigna angularis) varieties in wheat root aqueous extracts. Culture dish method and pot experiment were carried out with the seeds and the seedling of 10 adzuki bean varieties,respectively, and seed germination rate and various indexes of the seedlings were measured. About 30 g/L wheat root aqueous extracts very significantly improved the germination rate and sprouting index of B1789, Baihong 3, Baohong 947. The genotype differences of adzuki bean seedling was presented by the morphological index in wheat root aqueous extracts treatment; among all the morphological indexes, Baohong 947, Jinhong 3 presented a positive allelopathic effect, and their plant height, root length and leaf area were extremely significantly increased, while the fresh weights of both above-ground and underground parts were increased obviously, compared with the control. The results proved that Baohong 947 is the best summer-planting variety after wheat.