对梧桐种子进行浓硫酸浸种处理,设置0、10、20、30、40、50、60、70、80 min 9个浸种时间。通过测定种子发芽势、发芽率以及侧根数与根重,研究浓硫酸不同处理时间对梧桐种子的萌发率、根系生长的影响。研究结果显示,浓硫酸处理对梧桐种...对梧桐种子进行浓硫酸浸种处理,设置0、10、20、30、40、50、60、70、80 min 9个浸种时间。通过测定种子发芽势、发芽率以及侧根数与根重,研究浓硫酸不同处理时间对梧桐种子的萌发率、根系生长的影响。研究结果显示,浓硫酸处理对梧桐种子的萌发及根系生长有显著促进作用,不同处理时间对梧桐种子发芽率及根系生长均有较明显的差异,其中浓硫酸处理时间为20 min时发芽势和发芽率最高,分别为66%和89%;而浓硫酸处理时间为40 min时根系生长效果最好,侧根数和根重分别为10.65条和0.06 g。展开更多
[Objective] This study aimed to understand the characters of hard seeds of Amphicarpaea edgeworthii Benth. （Leguminosae） and explore the methods for break- ing dormancy. [Method] For both aerial and subterranean see...[Objective] This study aimed to understand the characters of hard seeds of Amphicarpaea edgeworthii Benth. （Leguminosae） and explore the methods for break- ing dormancy. [Method] For both aerial and subterranean seeds of A. edgeworthii, the morphological characteristics were observed and the appropriate temperature for germination was explored. For aerial seeds of A. edgeworthii, the characters of hard seeds were studied, and concentrated sulfuric acid treatment, hot water soak treat- ment and mechanical damage treatment were compared to explore the methods for breaking seed dormancy. [Result] The aerial seeds were oblate and averaged 3.38 mm in length, 3.02 mm in width, 1.88 mm in thickness, 15.32 g in thousand grain weight, with a hard seed rate after of up to 98% natural maturation. The subter- ranean seeds were approximately oblate with a maximum diameter of 15 mm and a hundred grain weight of （50.08-58.26 g）; among all the treatments for breaking hardseededness, cutting seed coat treatment and concentrated sulfuric acid treatment for 20 minutes were the most effective methods, whereas hot water soak treatment was the least effective method; constant temperature between 20 and 30 ℃ was optimum for the germination of aerial seeds, and alternative temperature of 30/20 ℃ was most appropriate for the germination of subterranean seeds. [Conclusion] Cutting seed coat treatment and concentrated sulfuric acid treatment for 20 minutes were the most effective methods to break the hardseededness of A. edgeworthii.展开更多
基金Supported by the"Twelfth Five-Year"Key Project for Crop Breeding of Sichuan Province(YZGG4-6)the Special Support Program for the Scientific Research Personnel of Sichuan Agricultural University~~
文摘[Objective] This study aimed to understand the characters of hard seeds of Amphicarpaea edgeworthii Benth. （Leguminosae） and explore the methods for break- ing dormancy. [Method] For both aerial and subterranean seeds of A. edgeworthii, the morphological characteristics were observed and the appropriate temperature for germination was explored. For aerial seeds of A. edgeworthii, the characters of hard seeds were studied, and concentrated sulfuric acid treatment, hot water soak treat- ment and mechanical damage treatment were compared to explore the methods for breaking seed dormancy. [Result] The aerial seeds were oblate and averaged 3.38 mm in length, 3.02 mm in width, 1.88 mm in thickness, 15.32 g in thousand grain weight, with a hard seed rate after of up to 98% natural maturation. The subter- ranean seeds were approximately oblate with a maximum diameter of 15 mm and a hundred grain weight of （50.08-58.26 g）; among all the treatments for breaking hardseededness, cutting seed coat treatment and concentrated sulfuric acid treatment for 20 minutes were the most effective methods, whereas hot water soak treatment was the least effective method; constant temperature between 20 and 30 ℃ was optimum for the germination of aerial seeds, and alternative temperature of 30/20 ℃ was most appropriate for the germination of subterranean seeds. [Conclusion] Cutting seed coat treatment and concentrated sulfuric acid treatment for 20 minutes were the most effective methods to break the hardseededness of A. edgeworthii.
