Study on the effect and mechanism of strigolactone on seed priming in Brassica napus L.

doi:10.14088/j.cnki.issn0439-8114.2023.09.002

Abstract

Abstract: To understand the biological process of Brassica napus L. seed vigor and develop an initiator for seed viability, the priming effects of the strigolactone （GR24） on seed germination in Brassica napus L. under different concentrations were analyzed. The results showed that 10.00 μmol/L GR24 significantly promoted seed germination and seedling growth, and increased the activities of antioxidant enzymes and the accumulation of anti-stress substances in the germinated seeds and seedlings. Gene expression analysis demonstrated that treatment with 10.00 μmol/L GR24 could effectively alleviate the inhibitory impact of ABA and enhance the promoting influence of GA on seed germination and seedling growth by regulating the expression of genes involved in ABA and GA synthesis and signaling pathways.

Key words: Brassica napus L., strigolactone, germination, seed vigor, seed priming

CLC Number:

ZHU Si, DENG Feng-ling, ZHAO Guang, CHAO Hong-bo, LI Chun-sheng, GU Jian-wei. Study on the effect and mechanism of strigolactone on seed priming in Brassica napus L.[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(9): 6-13.

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