The flue-cured tobacco G80 is not only one of the characteristic varieties in Changsha, but also indispensable raw materials for the series of Baisha ciga- rette. Defoliation during the late stage of growth seriously ...The flue-cured tobacco G80 is not only one of the characteristic varieties in Changsha, but also indispensable raw materials for the series of Baisha ciga- rette. Defoliation during the late stage of growth seriously reduces the yield and quality of tobacco, and limits the popularization and application of G80. In this pa- per, in order to investigate the reasons for the defoliation of G80, the transverse section structure, cellulose content and differential proteins of leaf major veins were analyzed. The results revealed that the autolysis and collapse of parenchyma cells is the main cause of defoliation, and fimgal infection is a factor inducing the au- tolysis of parenchyma cells. Application of bud suppression agent is one of the main ways to prevent fungal infection. The low cellulose content, low synthetic ability of xylan and pectin, the low removal ability of abnormal protein and low immune responsiveness are the inner reason for defoliation of flue-cured tobacco G80.展开更多
基金Supported by the Science and Technology Project of Changsha Municipal Tobacco Company in Hunan Province(CYKJ2015-01)
文摘The flue-cured tobacco G80 is not only one of the characteristic varieties in Changsha, but also indispensable raw materials for the series of Baisha ciga- rette. Defoliation during the late stage of growth seriously reduces the yield and quality of tobacco, and limits the popularization and application of G80. In this pa- per, in order to investigate the reasons for the defoliation of G80, the transverse section structure, cellulose content and differential proteins of leaf major veins were analyzed. The results revealed that the autolysis and collapse of parenchyma cells is the main cause of defoliation, and fimgal infection is a factor inducing the au- tolysis of parenchyma cells. Application of bud suppression agent is one of the main ways to prevent fungal infection. The low cellulose content, low synthetic ability of xylan and pectin, the low removal ability of abnormal protein and low immune responsiveness are the inner reason for defoliation of flue-cured tobacco G80.
