植物生长调节剂对毛叶枣砧木种子萌发及幼苗生长的作用

运用GA、IBA、PP333、S—3307及其不同浓度处理毛叶枣(Zizyphus mauritiana Lam.)的砧木种子。试验结果表明,所有植物生长调节剂处理都比对照(清水处理)能使种子萌发率不同程度地提高,尤以10mg/L S—3307效果最好,种子萌发率高达88.7％。同时,生长调节剂抑制幼苗根长但显著增加了根数。本试验认为在生产上可采用10mg/L S3307或100mg/L IBA浸种处理,以利提高毛叶枣砧木种子萌发率和幼苗健壮生长。

Action of Plant Growth Regulators on the Seed Germination and Seedling Growth of Zizyphus mauritiana

Effects of several plant growth regulators (GA, IBA, PP333 and S-3307) on the seed germination and seeding growth of Zizyphus mauritiana were studied. The results showed that the germination rates of the rootstock seed were improved by all treatments of growth regulators, esproved by all treatments of growth regulators, especially the seeds soaked with 10mg/L S-3307 had the highest rate (88. 7%). The actions of different growth regulators and their various concentration were dissimiliar on the growth of the seedling: the numbers of root were significantly increased but the lengths of root were restrained by all treatments. The authors suggested that 10mg/L S-3307 100mg/L Seeds soaked with IBA could be applied in propagation of Zizyphus mauritiana plants.