摘要
矮壮素和烯效唑属于延缓型植物生长调节剂,能够抑制植物体内赤霉素的生物合成及减慢细胞伸长速度。为控制甜椒穴盘苗徒长,提高穴盘苗质量,以大果型甜椒热甜4号为材料,利用矮壮素和烯效唑进行处理,分析不同浓度的矮壮素和烯效唑对甜椒幼苗质量的影响。结果表明:200～1 000 mg/L 50%矮壮素水剂及20～100 mg/L 5%烯效唑微乳剂均能明显抑制甜椒穴盘苗株高、增加茎粗、减小叶面积、增大根冠比、提高SOD和POD酶的活性。烯效唑对甜椒幼苗的抑制作用显著高于矮壮素。400 mg/L 50%矮壮素水剂或60 mg/L 5%烯效唑微乳剂是适宜的喷施浓度,可显著提高甜椒幼苗的质量。
Chlormequat and uniconazole belong to delayed plant growth regulators that can inhibit the biosynthesis of gibberellins and slow down the cell elongation. In order to control the excessive growth of sweet pepper plug seedlings and improve the quality of seedlings, large fruit sweet pepper Retian No.4 was treated with different concentrations of chlormequat and uniconazole for analyzing the effects on seedlings quality. The results showed that 200-1 000 mg/L 50% chlormequat and 20-100 mg/L 5% uniconazole could significantly inhibit the plant height, increase stem diameter, reduce leaf area, increase root-shoot ratio, and enhance the activity of SOD and POD enzyme. The inhibition effect of uniconazole was significantly higher than that of chlormequat. 400 mg/L 50% chlormequat or 60 mg/L 5% uniconazole was a suitable concentration for spraying that could improve the quality of sweet pepper seedlings significantly.
出处
《热带作物学报》
CSCD
北大核心
2012年第12期2156-2160,共5页
Chinese Journal of Tropical Crops
基金
中央级公益性科研院所基本科研业务费专项资金(中国热带农业科学院热带作物品种资源研究所)资助项目(No.PZS064
No.1630032012002)
关键词
甜椒
矮壮素
烯效唑
矮化效应
Sweet pepper
Chlormequat
Uniconazole
Dwarfing effect
