摘要
【研究目的】为更有效的缓解甜瓜连作障碍问题,研究甜瓜与大蒜间互作效应在理论和应用上都有重要的意义。【方法】以甜瓜品种‘金蜜’为试材,盆栽于连作与非连作土壤中,用大蒜根系水浸液处理幼苗,处理后30天,测定叶绿素含量、气体交换和叶绿素荧光参数。【结果】连作使甜瓜叶片光合色素含量、净光合速率(Pn)、气孔导度(Gs)、胞间CO_(2)浓度(Ci)、蒸腾速率(Tr)下降,使甜瓜叶片初始荧光强度(Fo)增加,PSⅡ最大光化学效率(Fv/Fm)、PSⅡ实际光化学效率(ΦPSⅡ)和光化学猝灭系数(qP)下降。大蒜根系水浸液处理连作与非连作甜瓜,均提高叶片光合色素含量、Pn、Gs、Ci、Tr、Fv/Fm、ΦPSⅡ和qP,降低Fo。【结论】甜瓜不适宜连作,大蒜根系水浸液能促进甜瓜生长,缓解甜瓜的连作障碍。
[OBJECTIVE]The effects of different light qualities on growth of chrysanthemum in vitro under light-emitting diodes(LEDs)were investigated.[METHOD]By arraying the different wave length and ratio of LEDs,the 7 kinds of light quality were built.The morphological and physiological characteristic,such as rooting,pigment content,carbon-nitrogen metabolism and antioxidative enzymes activities of chrysanthemum plantlets breeding 32-12 under the 7 kinds of light quality,were compared with fluorescent lamp.[RESULTS]The results showed that greatest stem length and the highest energy efficiency was obtained under monochromatic red light.Under blue light,the plantlets were low and strong,and root vigor was highest.Plants grown in complex of LEDs showed normal growth.Pigments under RBG were higher than other treatments.Red light promoted the contents of Chl b,blue light promoted the contents of Chl a.The contents of starch in leaf is highest under monochromatic red light,RBG light stimulated the accumulation of soluble sugar,carbon hydrate,Amino acid Soluble.Blue light benefits to synthesize protein.Under LEDs,C/N ratios is higher than fluorescent lamp.[CONCLUSION]It is reasonable to expect that the total LEDs irradiation system will be the major light source for plant tissue culture in future.
作者
陈友根
朱世东
陶鸿
朱舜球
王冬良
Chen Yougen;Zhu Shidong;Tao Hong;Zhu Shunqiu;Wang Dongliang(College ofHorticuhure,Anhui Agricultural University,Hefei Anhui 230036;Committee ofAgriculture,Huangshan City,A nhui Province,Huangshan Anhui 245000)
出处
《中国农学通报》
CSCD
2008年第12期339-343,共5页
Chinese Agricultural Science Bulletin
基金
安徽省教育厅高等学校青年教师资助计划"甜瓜连作过程中的化感效应"(2006jp1117)
关键词
大蒜根系水浸液
甜瓜
光合作用
叶绿素荧光参数
light emitting diodes
light quality
chrysanthemum(Dendranthema morifolium)
plant tissue culture
