Effects of Three Kinds of Growth Regulators on Hardwood Cutting of Crimson Seedless
[Objective]The effects of different growth regulators and their concentrations were studied in order to select suitable growth regulators and their concentrations for the hardwood cutting propagation of'Crimson Seedless'grape.[Meth-ods]Making one-year old branches of'Crimson Seedling'grape as the materials,the effects of cutting experiments on rooting and germination growth were carried out by using different concentrations of naphthalene acetic acid(NAA),indole acetic acid(IAA)and indole butyric acid(IBA)solution treatment,with water treatment as control.[Results]There were significantly improvements on the rooting rate and the germination rate with solution treatment with NAA,IBB and IBA.The germination rate of cuttings treated with the three growth regulators all were higher.Further,the rooting rates were better with 2 000 mg·L-1 NAA and 2 000 mg·L-1 IAA.But the lengths and the numbers of root were longer and more with 500 mg·L-1 IBA.[Conclusion]In this experiment,the solution treatment with 500 mg·L-1 IBA had the best effect on the root rate and germination rate of hardwood cutting of Crimson Seedling grape.
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