Effects of artificial aging treatment on seed traits and seedling growth of kidney bean

LIU Tiantian; GU Yu; YANG Zirui; HUANG Junxuan; LIU Yanjun; SUN Min; HAN Qihou

doi:10.16861/j.cnki.zggc.2024.0548

Abstract：In order to explore the effects of aging methods on the vigor of kidney bean seeds and seedling growth,and to screen out the optimal production region for kidney bean seed production,this study used the kidney bean variety Shuangfeng No.3 as the experimental material to investigate the effects of different production origins( Tianjin,Inner Mongolia,Gansu)and aging methods(natural storage and artificial aging)on the germination indexes of the seeds and the seedling growth indexes of the kidney bean seeds. The results showed that(1)Seeds from Tianjin were small and shriveled,producing weak seedlings,while seeds from Gansu were large and plump,producing robust seedlings.(2)After 2 days of artificial aging( T=41 ℃,RH=100％),the root length,leaf area,and fresh mass of seedlings from Tianjin and Inner Mongolia were higher than those in the control group .(3)Among the vigor index of seeds after 4 years of natural aging,the germination index was comparable to those of seeds artificially aged for 2-4 days. Seedling indexes of 10 years of natural aging were similar to those of seeds artificially aged for 6 days. Comprehensive analysis revealed that seeds from Tianjin were aging-sensitive,while seeds from Inner Mongolia and Gansu were aging-resistant. Moreover,short-term artificial aging treatment caused relatively mild damage to the seeds and even exhibited a certain priming effect. Based on the data of germination rate and vigor in this experiment,the artificial aging method can be matched with naturally aging seeds of different storage durations,thereby enabling its application in studies on the vigor of vegetable seeds.