摘要
为促进植物生长调节剂在园林生产中的应用。采用L_9(3)~3正交设计法,用赤霉素(GA_3)、6-苄氨基腺嘌呤(6-BA)和2,4-二氯苯氧乙酸(2,4-D)三种植物生长调节剂组合处理波斯菊种子,研究其对波斯菊种子萌发的影响。结果表明:GA_3和2,4-D对波斯菊种子萌发及幼苗早期生长的影响明显高于6-BA;采用0.5 mg·L^(-1) GA_3处理波斯菊种子,其发芽时间能较对照组缩短1～2 d;采用0.5～1.0 mg·L^(-1) GA_3和2,4-D的混合液浸泡波斯菊种子24 h后催芽,其萌芽率和发芽指数均较对照组高出16%以上,幼苗生长初期生物量也较对照组高出35%以上。
In order to promote the application of plant growth regulators in garden production. The seeds of Cosmos bipinnatus were treated with three plant growth regulators,gibberellin (GA 3),6-Benzylaminopurine (6-BA) and 2,4-dichlorophenoxyacetic acid (2,4-D),by L 9 (3) 3 orthogonal design,and their effects on seed germination of Cosmos bipinnatus were studied. The results showed that the effect of GA 3 and 2,4-D on seed germination and early seedling growth of Cosmos bipinnatus was significantly higher than that of 6-BA;the germination time of seeds treated with 0.5 mg ·L^-1 GA 3 was shorter than that of control group by 1-2 days;the germination rate and germination index of seeds soaked in mixture of 0.5-1.0 mg ·L^-1 GA 3 and 2,4-D were higher than those of control group by 16% at the beginning of seedling growth. Phase biomass was 35% higher than that of control group.
作者
杨睿
胡琦
石美
廖思
曾艳玲
YANG Rui;HU Qi;SHI Mei;LIAO Si;ZENG Yan-ling(Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees,Ministry of Education/Key Laboratory of Non-Wood Forest Products of State Forestry Administration,Central South University of Forestry and Technology,Changsha 410004,China)
出处
《黑龙江农业科学》
2019年第5期71-76,共6页
Heilongjiang Agricultural Sciences
基金
2017年湖南省大学生研究性学习和创新性实验计划项目(湘教通[2017]205)
关键词
波斯菊
植物生长调节剂
萌发
生物量
Cosmos bipinnatus
plant growth regulators
germination
biomass
