南方农业学报2012，Vol.43Issue(1)：50-52,3.DOI:10.3969/j:issn.2095-1191.2012.01.50
宿根甘蔗幼苗黄化的原因初探
Primary research on causes and mechanism of young shoot etiolation in ratoon sugarcane crop
摘要
Abstract
[Objective]In order to provide scientific basis for developing comprehensive etiolation control measures, the present studies were conducted to find out causes of seedlings etiolation in ratoon sugarcane. [Method.]Surveys were conducted in sugarcane fields, severely affected with young shoot etiolation, to investigate the symptoms, causes and mechanism of etiolation in young shoots of ratoon sugarcane crops. Samples of soil and leaves from normal plants and etiolated plants were collected for nutrient analysis. [Result]Etiolation symptom of ratoon sugarcane young scoots occurred in the moderately acidic soil (pH of 4.28). The available Fe, Mn, Ca and Mg contents were lesser thanthase in normal field soils, however the available S content was higher and available B content did not showed any differences. The active Fe, total Ca, total Mg and total S content in leaves of etiolated plants were lesser than those in the normal plants, however, the active Mn, total Mn and total Fe content in such leaves were higher than in normal plants. Similar to soils, B content did not showed significant differences amongst leaves of normal and etiolated plants. [Conclusion]The nutrient imbalance caused by lesser active Fe content and higher active Mn content in ratoon cane might be the major causes for seedling etiolation in ratoon sugarcane.关键词
宿根甘蔗/幼苗/黄化/原因调查Key words
ratoon sugarcane/ seedling/ etiolation/ reason investigation分类
农业科技引用本文复制引用
陈桂芬,唐其展,黄玉溢,熊柳梅,何红,刘忠..宿根甘蔗幼苗黄化的原因初探[J].南方农业学报,2012,43(1):50-52,3.基金项目
国家甘蔗产业技术体系项目(CARS-20) （CARS-20）
广西自然科学基金项目(桂科自0991202) （桂科自0991202）
广西农业科学院科技发展基金项目(201011) （201011）
国家现代农业产业技术体系广西创新团队(甘蔗)项目 （甘蔗）
