Effects of Exogenous IBA on the Root Morphology Indices of Xanthoceras sorbifolia Bunge by Hardwood Cuttings(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Effects of Exogenous IBA on the Root Morphology Indices of Xanthoceras sorbifolia Bunge by Hardwood Cuttings

Author(s):: ZONG Jian-wei¹; 2; YANG Yu-hua²; ZHAO Zhong¹; LIU Zhao-jun²; ZHANG Sheng²; 1.Northwest Agricultural and Forestry University，Key Laboratory of Western Environment and Ecology of Education Ministry，Yangling，Shannxi 712100；
2.College of Natural Resources and Environmental Sciences，Pingdingshan University，Key Laboratory of Ecological Restoration Hilly，Pingdingshan，Henan 467000

Keywords:: Xanthoceras sorbifolia Bunge; hardwood cuttings; root morphology

Abstract:: The rooting morphology of the hardwood cuttings of Xanthoceras sorbifolia Bunge was quantitatively analyzed to investigate the root length，total root surface area，total volume，and the changes of the rooting morphology under different concentrations of IBA treatments.The results showed that,compared with the water control (CK)，IBA treatments significantly (P<0.05) increased total root length，total surface area，total volume.Indices of the root morphology increased firstly and decreased subsequently with the concentration of IBA increased，and the peak of the total root length，the total surface area and the total volume occurred at IBA concentration 800 mg/L，and rooting rate reached 65.40%.The roots of shoots of cutting with IBA treatments were mainly distributed in diameter classes>2.0 mm.There were significant correlation among the total root length，the total surface，the total volume and the concentration of IBA.Through regression analysis，the shoots for cutting of Xanthoceras sorbifolia obtained the higher root morphology when the concentration of IBA in 795～820 mg/L.

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Last Update: 2014-08-30