摘要
目的:研究不同浓度水杨酸(SA)对半夏植株生长的影响。方法:待半夏植株15 cm左右时,对半夏喷施不同浓度的SA溶液,3次后测量半夏株高,总叶绿素含量,SOD活性,MAD含量,光合作用速率,胞间CO2浓度,蒸腾速率和叶温等生理生化指标的变化。结果:SA浓度为0.5 mmol.L-1时能增加胞间CO2浓度,降低叶温,提高SOD保护酶活性,降低MDA含量,有助于光合速率提高。结论:半夏植株喷施适宜浓度的SA有利于植株生长,延缓半夏倒苗,提高块茎产量和总生物碱含量。
Objective： To study the effects of salicylic acid of different concentration （SA） on the growth of Pinellia ternate. Method： SA of different concentration was sprayed to the plant as it grew about 15 cm high. Plant height, total chlorophyll content, activity of SOD, MAD content, photosynthesis speed, intercellular CO2 concentration, the transpiration speed and the leaf temperature were measured after 3 times spray. Result： When 0.5 mmol · L^-l SA was sprayed, the intercellular CO2 concentration, activity of SOD and photosynthesis speed were increased, while leaf temperature and MDA content were decreased. Conclusion： SA at the concentration of 0.5 mmol · L^-l was suitable for the growth of P. ternate . It obviously decreased sprout tumble and increased the fresh weight of tuber and the alkaloid content.
出处
《中国中药杂志》
CAS
CSCD
北大核心
2007年第12期1134-1136,共3页
China Journal of Chinese Materia Medica
基金
国家农业成果转化资金重点项目(05EFN213400124)
淮北市重大专项(06085)
关键词
半夏
水杨酸
植物生长
倒苗
Pinellia ternata
salicylic acid
plant growth
sprout tumble
