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阔瓣含笑种子胚形态发育完善,具生理休眠特性。研究表明,内源促进物质缺乏可能是引起种子休眠的主要原因,种皮透气性差也有一定影响。该种子含水量高,忌干藏。种子在室温下层积80天或用低温(5℃)层积120天可解除休眠。层积期间种子含水量在40—50%可保持种子生活力和解除休眠。另外,种子用300ppm GA_3处理48小时可代替层积。种子适宜的发芽条件是黑暗30℃恒温。
Broad-leaved Michelia lobata embryonic morphology well-developed, with physiological dormancy characteristics. Studies have shown that the lack of endogenous promoters may be the main cause of seed dormancy, poor seed coat permeability also has a certain impact. The seeds of high water content, avoid dry Tibet. Seeds were delaminated for 80 days at room temperature or for 120 days at low temperature (5 ° C). Seed moisture content of 40-50% during stratification can maintain seed viability and release dormancy. In addition, seed treatment with 300 ppm GA_3 for 48 hours instead of stratification. Suitable seed germination conditions are dark 30 ℃ constant temperature.