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Detailed Explanation of the Variable Temperature Treatment Method for Propagating Yew (Taxus) from Seed

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The method for variable temperature treatment in seed propagation of yew is as follows: yew seeds have a double dormancy habit involving the radicle and the hypocotyl. The radicle requires a high-temperature stage above 25°C for about 1 month to break dormancy, while the hypocotyl requires conditions between minus 3°C and minus 20°C for about 1 month to release dormancy. To accelerate seed germination earlier, simply mix yew seeds with cracked seed coats with moist sand, place them in an environment below minus 3°C and freeze them for 25 to 40 days to release the hypocotyl dormancy. After sowing in late winter or early spring,

The method for variable temperature treatment in seed propagation of yew is as follows: yew seeds have a double dormancy habit involving the radicle and the hypocotyl. The radicle requires a high-temperature stage above 25°C for about 1 month to break dormancy, while the hypocotyl requires conditions between minus 3°C and minus 20°C for about 1 month to release dormancy. To accelerate seed germination earlier, simply mix yew seeds with cracked seed coats with moist sand, place them in an environment below minus 3°C and freeze them for 25 to 40 days to release the hypocotyl dormancy. After sowing in late winter or early spring, after about 2 months, once temperatures above 25°C are encountered, the radicle dormancy can be broken, and the seeds can sprout and emerge from the soil.

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