引用本文:
【打印本页】   【下载PDF全文】   【查看/发表评论】  【下载PDF阅读器】  【关闭】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被：浏览 0次   下载 0次 本文二维码信息
码上扫一扫！
分享到： 微信 更多
字体:加大+|默认|缩小-
24%氨氯吡啶酸对盛花期薇甘菊种子萌发的影响
刘春燕, 杨振意, 韦美满, 李亭潞, 晏建红, 曾浩威, 许少嫦, 薛春泉
广东省森林资源保育中心
摘要:
为研究化学防治对薇甘菊 Mikania micrantha 种子萌发力的影响, 文章分别用 24%氨氯吡啶酸 水剂 1 ∶ 1 000、 1 ∶ 1 500 和 1 ∶ 2 000 浓度防治盛花期薇甘菊, 对其种子的百粒重、 大小、 萌发率等进行 比较, 分析了 24%氨氯吡啶酸水剂对盛花期薇甘菊有性生殖的影响。 结果表明, 与对照相比, 各处理种 子的百粒重、 长度、 冠毛长度、 萌发率、 萌发指数显著降低 (P<0. 05), 萌发天数无显著变化; 各处理间 相比, 1 ∶ 2 000 处理薇甘菊种子的百粒重、 长度、 萌发率显著较低 (P<0. 05), 1 ∶ 1 000 和 1 ∶ 1 500 处 理薇甘菊的种子顶端直径和冠毛长度差异显著 (P<0. 05), 其他差异不显著。 在盛花期, 喷施 24%氨氯吡 啶酸防治不能有效阻止薇甘菊有性繁殖传播, 会使薇甘菊产生更轻、 更小的种子, 反而有利于其种子的 远距离传播。 建议在薇甘菊营养生长期进行防治, 尽量避免在薇甘菊开花期进行防治。
关键词:  薇甘菊  24%氨氯吡啶酸  种子  有性繁殖
DOI：
分类号:
基金项目:广东省林业科技创新项目 (2024KJCX010)。
Effect of 24% Picloram on Seed Germination of Mikania micrantha Controlled in Peak Flowering Stage
LIU Chunyan, Yang Zhenyi, WEI Meiman, LI Tinglu, YAN Jianhong, ZENG Haowei, XU Shaochang, XUE Chunquan
Guangdong Forest Resources Nursery Center
Abstract:
To study the effect of chemical control on the germination capacity of Mikania micrantha seeds, this treated M. micrantha at the peak flowering stage with 24% picloram aqueous solution at dilution ratios of 1 ∶ 1 000, 1 ∶ 1 500, and 1 ∶ 2 000. The 100-seed weight, length, and germination rate were compared to analyze the impact of 24% picloram on the sexual reproduction of M. micrantha. The results showed that, compared to the control, all treatments significantly reduced the 100-seed weight, length, pappus length, germination rate, and germination index (P< 0. 05), while there was no significant difference in germination days. Among the treatments, the 100-seed weight, length, and germination rate of M. micrantha seeds treated with 1 ∶ 2 000 were significantly lower (P<0. 05). The top diameter and pappus length of M. micrantha seeds treated with the 1 ∶ 1 000 and 1 ∶ 1 500 were significantly different (P<0. 05), while other differences were not significant. In the peak flowering stage, spraying 24% picloram could not effectively prevent the sexual reproduction and seed dispersal of M. micrantha. It induced the production of lighter and smaller seeds, which may enharce long-distance dispersal. Therefore, control measures should prioritize the vegetative growth stage of M. micrantha and avoid implementation during its flowering period.
Key words:  Millikan micrantha  24%picloram  seed