生态环境学报2011，Vol.20Issue(1)：72-78,7.
飞机草的繁殖能力与种子的萌发特性
Reproductive capacity and seed germination characteristics of Chromolaena odorata
摘要
Abstract
Chromolaena odorata is an alien weed with strong invasiveness and spreading rapidly in southern China at present.The successful invasion of this weed might be related to its reproductive traits and strong adaptability of seed germination to environmental conditions.We studied the reproductive capacity and seed germination characteristics of C.odorata by employing both field investigations and laboratory experiments.The results showed that C.odorata could reproduce clonally.However, its sexual reproductive capacity was much stronger.A single mature plant could produce approximate 480 thousands of seeds.Its seed was small and there are more than 27 pappus on a single seed.Seed germination of C.odorata was affected by environment factors.The optimum temperature for germination was 28 ℃.It did not require any additional nutrition for germination and could endure drought stress to some extent during germination process.Acidic conditions could accelerate its seed germination, but the percentage of germination was significantly decreased when pH was below 2.Germination could be inhibited by the buried treatment and no seedling emerged when seeds were planted 3.0 cm deep.关键词
飞机草/繁殖能力/种子萌发Key words
Chromolaena odorata/ reproductive capacity/ seed germination分类
农业科技引用本文复制引用
全国明,毛丹鹃,章家恩,谢俊芳,徐华勤..飞机草的繁殖能力与种子的萌发特性[J].生态环境学报,2011,20(1):72-78,7.基金项目
国家自然科学基金(30770403、40871118) （30770403、40871118）
教育部博士点基金(200805640012) （200805640012）
国家重大基础研究计划项目(973)(2011CB100406) （973）
广东省科技计划项目(2007B020709007) （2007B020709007）
广东省高层次人才项目 （）
广东省自然科学基金(06105467) （06105467）
广州市教育局科技项目(08C008) （08C008）
