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Influences of Plant Growth Regulators, Basal Media and Carbohydrate Levels on Cell Suspension Culture of Panax ginseng 被引量:1
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作者 Tang Wei Wu Jiongyuan, Zhang Limei(Northeast Agricultural University, Harbin 150030, P R C) 《Journal of Northeast Agricultural University(English Edition)》 CAS 1995年第1期62-65,共4页
A cell suspension culture of Panax ginseng which may be continuously subcultured has been established. Embryogenic callus derived from clutured young leaves was used to initiate the culture.Plant growth regulators, ba... A cell suspension culture of Panax ginseng which may be continuously subcultured has been established. Embryogenic callus derived from clutured young leaves was used to initiate the culture.Plant growth regulators, basal medium formula and carbohydrate levels were examined to determine their various effects on suspension culture cell growth and development. The best selection of plant growth regulator, hasal medium and carbohydrate level is 2 mg / L 2,4-D: 0.5 mg / L KT,MS and 3% sucrose respectively. 展开更多
关键词 Panax ginseng cell suspension culture plant growth regulators
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Physiological Mechanisms of Delaying Leaf Senescence in Maize Treated with Compound Mixtures of DCPTA and CCC 被引量:3
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作者 Wang Yong-chao Gu Wan-rong +5 位作者 Ye Le-fu Sun Yang Li Li-jie Zhang He Li Jing Wei Shi 《Journal of Northeast Agricultural University(English Edition)》 CAS 2015年第3期1-15,共15页
At the beginning of silking, maize production began to form, but leaves started senescence and photosynthetic capacity decreased at this time, all of those severely restricted the formation of the production. In order... At the beginning of silking, maize production began to form, but leaves started senescence and photosynthetic capacity decreased at this time, all of those severely restricted the formation of the production. In order to study the effects of exogenous substances on the process of leaf senescence, 40 mg. L-1 DCPTA and 20 mg. L-1 CCC were mixed in the research. When the maize grew to the six expanded leaves stage, 10 mL compound mixtures (TR) were sprayed on both sides of leaves for per plant, and the control was treated with water (CK). Three plants were selected randomly for determination of physiological index at 10, 20, 30, 40 and 50 days after silking. The results showed that TR could increase the chlorophyll content significantly, FvFm, Fv/F0 and Y(Ⅱ) values of TR were higher than those of CK while F0 values were opposite. Compared with CK, TR increased SOD and POD activities and soluble protein content, and reduced MDA content. Correlation analysis showed that chlorophyll content had negative correlation with F0, and MDA content had negative correlation with other indexes. Compared with CK, TR reduced the negative correlation effect between chlorophyll content and MDA, increased the positive correlation effect between chlorophyll content and Fv/Fm, SOD, PODI and soluble protein. The study provided theoretical and experimental evidence for the application of the compound mixtures of DCPTA and CCC to the production. 展开更多
关键词 MAIZE plant growth regulator chlorophyll fluorescence parameters SENESCENCE DCPTA
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