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本文利用直立板发芽装置测定了50份杉木种子的活力。根据胚根、下胚轴伸出与否以及子叶显现的长度,将直立板上生成的幼苗分为五级。利用直立板发芽测定第20天的各级幼苗数,可以估测不同圃地条件下的田间出苗率和成苗率以及各家系种子的相对遗传活力。
In this paper, the vigor of 50 Chinese fir seeds was determined by the erect plate germination device. According to the radicle, hypocotyl extended or not, and the length of the cotyledons appeared, the seedlings generated on the upright were divided into five grades. Using the upright plate to determine the number of seedlings on the 20th day, we can estimate the seedling emergence rate and seedling emergence rate and the relative genetic activity of each family seed in different nursery conditions.