《Table 4 Multiplication of peony variety Taipinghong bulbils》

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《垫江牡丹品种太平红的组织培养研究（英文）》

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The bulbil of the Taipinghong was cultured for multiplication with the modified MS medium（calcium ion concentration doubled）+arrageenan 6g/L+succharose 30 g/L+NAA 0.2 mg/L+6-BA 2.0mg/L+GA3 0.5 mg/L+AC 100 mg/L.Specifically，the induced peony plantlet was divided into Plant 2and 3，and then inoculated in culture mediums for multiplication.Afterwards，dark treatment was applied to these plants for 7 d before light culture（Fig.2）.According to Table 4，the multiplication rate of the 2nd generation was 32.4%；the 3rd generation was cultured using the same inoculation and division method based on the survived plants of the 2nd generation，which presented a higher multiplication rate at 44.4%.In contrast，the multiplication rate of the 4th generation decreased to 40.0%，mainly resulting from the gradual aging of the plant.Plants of the 5th and 6th generation were not able to reproduce as original forms and had even led to variation.