摘要
The effects of four kinds of plant growth regulators with different concentrations on narcissi were studied in 2001. The results showed that the regulators could inhibit the growths of height and leaves of narcissi. Of the four regulators, the dwarfing effects of paclobatrazol (PP333) and uniconazole (S3307) on narcissi were better than those of chlorocholine (CCC) and dimethyl amino-sussinamic acid (B9). All of the regulators did not have significant effect on the root length. Moreover, the time of flowering was later for the narcissi treated with regulators than that of the control to a certain extent, and the range delayed was from 2 days to 19 days. The correlation analysis results showed that there was a significant correlation between the time of flowering and the concentrations of regulators. The ornament value of narcissi was obviously improved by using the regulators.
为了提高水仙的观赏价值,本文用四种植物生长调节剂(烯效唑、多效唑、矮壮素、比久)对水仙植株进行处理,结果表明:在四种生长调节剂中,虽然矮壮素和比久对叶片和花葶生长都有较明显的抑制作用,但多效唑和烯效唑的矮化效果却要好很多。四种生长调节剂对根长生长没有明显的促进或抑制作用。同时,水仙的花期受四种调节剂的不同程度的影响,与对照相比,花期延迟在2-19天之间。通过相关分析可以看出,水仙花花期延迟的天数和处理浓度有很显著的相关性。由此可见,适宜浓度的植物生长调节剂可以使水仙植株矮化,花葶缩短,叶片变小,株型紧凑,直立平稳,明显提高园艺观赏价值。表4参11。
