[Objective] This study was conducted to characterize the seed germination and seedling growth of Idesia polycarpa. [Method] After 3-5 h of soaking in 5% baking soda solution, the waxy outer layer of the seeds was rubb...[Objective] This study was conducted to characterize the seed germination and seedling growth of Idesia polycarpa. [Method] After 3-5 h of soaking in 5% baking soda solution, the waxy outer layer of the seeds was rubbed off. Then, the seeds were mixed with fine sand and evenly sown on seedbeds. Germinated seeds were counted to calculate germination rate. Seedlings at two-or three-leef stage were transplanted, and their phenophases were observed and recorded. Height and ground diameter of the seedlings were monitored in the following three years. [Result] The seed germination rate was increased to 20% by soaking in 5% baking soda solution. The yearly seedling height growth of L polycarpa increased with the increase in seedling age. The monthly seedling height growth from August to October was much higher than in other months in the first year, and the growth in seedling height in the three months accounted for 79% of the total increase in that year. The seedling height grew rapidly from May to July in the following two years. In detail, the increase in seedling height from May to July accounted for 87.94% of the total increase in the second year, and 74.16% of the total increase in the third year. The monthly seedling height growth peaked in May in the two years. The yearly growth in ground diameter of I. polycarpa seedlings also increased with the increase in seedling age. The monthly growth in ground diameter from July to September was much higher than in other months in the first year, and the increase in ground diameter in the three months accounted for 80% of the total increase in that year. In the second and third years, the monthly growth in ground diameter from July to October was much higher than in other months. The increase in ground diameter in the two months accounted for 76.89% of the total increase in the second year, and 61.23% of the total increase in the third year. The monthly growth in ground diameter peaked in August in the two years. [Conclusion] The results will provide a theoretical basis for the development and popularization of L polycarpa in Chongqing and surrounding provinces and cities.展开更多
基金Supported by Key Technology Research and Development Program of Chongqing(KL1401)~~
文摘[Objective] This study was conducted to characterize the seed germination and seedling growth of Idesia polycarpa. [Method] After 3-5 h of soaking in 5% baking soda solution, the waxy outer layer of the seeds was rubbed off. Then, the seeds were mixed with fine sand and evenly sown on seedbeds. Germinated seeds were counted to calculate germination rate. Seedlings at two-or three-leef stage were transplanted, and their phenophases were observed and recorded. Height and ground diameter of the seedlings were monitored in the following three years. [Result] The seed germination rate was increased to 20% by soaking in 5% baking soda solution. The yearly seedling height growth of L polycarpa increased with the increase in seedling age. The monthly seedling height growth from August to October was much higher than in other months in the first year, and the growth in seedling height in the three months accounted for 79% of the total increase in that year. The seedling height grew rapidly from May to July in the following two years. In detail, the increase in seedling height from May to July accounted for 87.94% of the total increase in the second year, and 74.16% of the total increase in the third year. The monthly seedling height growth peaked in May in the two years. The yearly growth in ground diameter of I. polycarpa seedlings also increased with the increase in seedling age. The monthly growth in ground diameter from July to September was much higher than in other months in the first year, and the increase in ground diameter in the three months accounted for 80% of the total increase in that year. In the second and third years, the monthly growth in ground diameter from July to October was much higher than in other months. The increase in ground diameter in the two months accounted for 76.89% of the total increase in the second year, and 61.23% of the total increase in the third year. The monthly growth in ground diameter peaked in August in the two years. [Conclusion] The results will provide a theoretical basis for the development and popularization of L polycarpa in Chongqing and surrounding provinces and cities.
