Abstract

Floret opening of excised spikelets in Sorghum bicolor (L.) Moench and Sorghum Sudanesis (Piper) Stapf was significantly stimulated by immersing into 2 mM methyl jasmonate (MeJA) solution. In male sterile (MS) lines of Sorghum bicolor (L.) Moench, floret opening was more sensitive to MeJA than that in maintainer (MT) lines. Salicylic acid (SA) could abolish the effect of MeJA on the opening of spikelets. These data indicate that MeJA plays a role in floret opening in sorghum, and that SA interacts with MeJA in regulating of this process.

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