Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Plant Physiology Journal》 2018-04
Add to Favorite Get Latest Update

Influence of calcium on peduncle cracking of pineapple (Ananas comosus cv. ‘Tainon 17') and its physiological mechanism

LU Ming;HONG Shan;JU Hong-Ling;YANG Yue;ZHAO Yan;GENG Jian-Jian;DENG Yan;RUAN Yun-Ze;College of Tropical Agriculture and Forestry, Hainan University/Tropical Biological Resources Sustainable Utilization of Hainan Province Key Laboratory;College of Resources and Environment, Southwest University;Hainan Wan Zhong Industrial Co., Ltd.;  
This study was conducted to understand the effects and influencing mechanisms of calcium(Ca) application on peduncle cracking in ‘Tainon 17' pineapple. Under different Ca application treatments, the yield, peduncle cracking rate, Ca concentrations in D-leaf and peduncle, and related enzyme activities were measured, and relationships between peduncle cracking rate, Ca concentration and enzyme activities were analyzed. The results showed that Ca application increased pineapple yield while reduced peduncle cracking rate, and the optimum Ca application period was the flower forcing period. Correlation analysis indicated a significant negative relationship between Ca concentration in peduncle and peduncle cracking rate. With Ca application, protopectin(PP) content significantly increased; the activites of superoxide dismutase(SOD) and catalase(CAT) also increased, especially when Ca application was conducted 10 d after flower forcing period. Meanwhile the activities of polyphenol oxidase(PPO) and cell wall hydrolase(CX and PG) reduced. Significant negative correlations were found between peduncle cracking rate and PP content and CAT activity, while a significant positive relationship existed between peduncle cracking rate and PPO activity. These results indicated that Ca application could be an important measure to reduce peduncle cracking, the optimal Ca application was 300 kg·hm-2, and the optimum application period was between rapid growth period Ⅱ and 10 d after flower forcing period.
【Fund】: 国家自然科学基金(31760605);; 海南大学科研团队培育资助项目(hdkytg201703)~~
【CateGory Index】: S668.3
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