Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Chinese Journal of Tropical Crops》 2015-09
Add to Favorite Get Latest Update

Effect of Shading on Carbon Metabolism and Inflorescence Quantity in Black Pepper During Full-bloom Stage

ZU Chao;YANG Jianfeng;LI Zhigang;WANG Can;YU Huan;WU Huasong;Institute of Spice and Beverage, Chinese Academy of Tropical Agricultural Sciences / Key Laboratory of Genetic Resources Utilization of Spice and Beverage Crops, Ministry of Agriculture / Hainan Provincial Key Laboratory of Genetic Improvement and Quality Regulation for Tropical spice and Beverage Crops;  
To determine suitable light intensity and the collocation intercropping crops density at full-bloom stage of black pepper trees, we analyzed the variation in the concentrations of leaf photosynthesis, soluble sugar, sucrose and starch, the activities of carbon metabolism-related enzymes and the quantity of the pepper inflorescences and flowers under four shading conditions. The effect of photosynthesis and sugar accumulation on pepper flowering was evaluated. The results showed that 30% shading could not decrease the quantity of the pepper inflorescences and flowers. And that the accumulation of soluble sugar was greatly enhanced at the recovering and the early stage of full-bloom stages. The correlation analysis revealed that the content of sugar in the leaves of flowering branches was closely correlated with the quantity of flowers at the subsequent developmental stage, whereas a significantly negative correlation existed between sugar accumulation and sucrose phosphate synthase activity.According to these findings, it is suggested that the shading of about 30% on pepper trees should be taken at the recovering and early stage of the full-bloom stages so as to provide more sugar for the development of flower buds and to increase flower amount, when pepper intercropped with other crops.
【Fund】: 国家自然科学基金项目(No.31272230);; 海南省重大科技项目(No.ZDZX2013020)
【CateGory Index】: S573.9
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved