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Yoon Ha Kim Abdul Latif Khan Muhammad Hamayun Jung Tae Kim Joon Hee Lee In Cheon Hwang Cheoul Su Yoon In-Jung Lee 《Scientia Horticulturae》2010
The effect of Prohexadione Calcium (Pro-Ca) and daminozide was observed on the growth characteristics and endogenous gibberellin contents of Chrysanthemum morifolium R. cv Monalisa White. Three concentrations viz. 100, 200 and 400 ppm of Pro-Ca and a single concentration of daminozide (800 ppm) were applied three times with 7 days interval on three weeks old plant under greenhouse condition. Pro-Ca suppressed the plant length up to 30.7% while daminozide inhibited up to 27.12% at optimum concentration. The chlorophyll contents and stem diameter were higher than control, while the fresh weight and flower number insignificantly reduced with such treatments. Gibberellin (GA) analysis showed that Pro-Ca and daminozide application significantly lowered bioactive GA1 content, although the amount of its immediate precursor GA20 was fractionally higher. Bioactive GA4 content was slightly higher than the control while significant difference in GA9 was found between the plants treated with Pro-Ca and daminozide. Current study showed that both early C13 hydroxylation and non-C13 hydroxylation pathways of GA biosynthesis are operational in C. morifolium. 相似文献
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多效唑与比久浸种处理对波斯菊矮化的影响 总被引：2，自引：1，他引：1
在波斯菊的种苗生产过程中常出现徒长现象。研究了不同浓度植物生长调节剂多效唑和比久对波斯菊种子萌发、幼苗生长、发育的影响,结果表明:采用多效唑667 mg/L处理2 h的波斯菊种子发芽率与喷清水的接近,且矮化效果最佳,比久对波斯菊矮化无显著效果。 相似文献
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植物生长延缓剂对万寿菊穴盘苗生长的控制作用研究 总被引：7，自引：0，他引：7
试验研究不同浓度的植物生长延缓剂比久(B9)、矮壮素(CCC)和多效唑(PP333)溶液对万寿菊穴盘苗生长的控制作用结果表明,B9、CCC及PP333处理万寿菊穴盘苗的最佳浓度分别为2500mg/kg、0.3%和60mg/kg,适宜浓度分别为1000~2500mg/kg、0.1%~0.3%、10~60mg/kg。3种延缓剂最佳浓度处理对万寿菊穴盘苗生长的控制作用60mg/kg PP333处理>0.3?C处理>2500mg/kg B9处理,且60mg/kg PP333处理成本最低。当CCC处理浓度>1.0%时万寿菊穴盘苗出现药害现象。 相似文献
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Two separate experiments were conducted to evaluate the effectiveness of growth retardants in controlling height of oriental lily ‘Mona Lisa’. In first experiment flurprimidol was applied as a single foliar spray (0, 10, 20, 30 and 40 mg l−1) or a soil drench (0, 0.1125, 0.225, 0.3375 and 0.45 mg/pot) at two plant growth stages (7 and 15 cm). In second experiment flurprimidol (0, 10, 20, 30 and 40 mg l−1) and daminozide (0, 2500, 3500 and 4500 mg l−1) were applied once or twice as a foliar spray. Daminozide applied once or twice at concentrations of 2500–4500 mg l−1 was ineffective in ‘Mona Lisa’ growth retardation. Flurprimidol was effective growth retardant in reducing stem extension without adverse side-effects. The maximum reduction in plant height obtained was 45% compared to controls. Flowering time was not affected by lower rates of flurprimidol, but it was slightly delayed when retardant was applied at higher doses. The tepal size, leaf size and pedicel length were smaller than those of the control plants. Intensified leaf colour was observed on flurprimidol treated ‘Mona Lisa’. The effect of flurprimidol persisted in the year after treatment. 相似文献
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采用不同浓度的Bu溶液叶面喷施矮牵牛穴盘苗1结果表明,B,能有效地抑制矮牵牛穴盘苗的生长高度,使其株型祭凑、叶色加深、根系发达、叶片厚实,从而提高花卉的质量.处理的最佳浓度为2 500mg,L,适宜浓度为1 000～2500m班. 相似文献
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