Adventitious rhizogenesis in Bambusa nutans and Bambusa tulda: Influence of seasonal variation, IBA and cutting type  

作　　者：S. Singh S. Yadav P. K. Patel S. A. Ansari 

机构地区：[1]Molecular Biology and Tree Physiology Laboratory, Botany, Silviculture and NWFP Division, Institute of Forest Productivity, Aranyodaya, NH-23, Lalgutwa, Ranchi-835303, India [2]Tropical Forest Research Institute, P. O. - RFRC, Jabalpur-482021, India

出　　处：《Journal of Forestry Research》2011年第4期693-696,共4页林业研究（英文版）

基　　金：funded by Department of Biotechnology, Government of India, New Delhi(Sanction No.102/IFD/San 2632/2003-2004)

摘　　要：The influence of seasonal variation, indole-3-butyric acid （IBA） and type of cuttings was examined on induction and growth of adventitious roots in Bambusa nutans Wall. and Bambusa tulda Roxb. Singlenode culm and culm-branch cuttings from the mature culms were provided with immersion treatment for 24 h of either water （control） or 2 mM IBA in four different seasons, i.e., spring （mid February）, summer （mid May）, rainy （mid July）, and winter （mid November） and maintained for two months in the mist chamber at the relative humidity of （70±5）% and the tenlperature of （30±2）℃. In B. nutans, adventitious rooting occttrred in both types of cuttings in all the seasons with the best rooting in the summer season i.e., May （88% in culm cuttings） and the least in winter. On the contrary, adventitious rooting was recorded only in culm cuttings in spring and summer season in B. tulda. IBA treatment significantly enhanced rooting, root number and root length; registering 14 to 17 times improvement over control in the best rooting season. Three factor- interactions （season × cutting type × IBA treatment） were significant for rooting in B. nutans and all characteristics, except sprouting in B, tulda. Thus, single-node culm and culm-branch cuttings in B. nutans and culm cuttings in B. tulda treated with 2 mM IBA during spring （February） to summer （May） season are recommended for their clonal multiplication.The influence of seasonal variation, indole-3-butyric acid （IBA） and type of cuttings was examined on induction and growth of adventitious roots in Bambusa nutans Wall. and Bambusa tulda Roxb. Singlenode culm and culm-branch cuttings from the mature culms were provided with immersion treatment for 24 h of either water （control） or 2 mM IBA in four different seasons, i.e., spring （mid February）, summer （mid May）, rainy （mid July）, and winter （mid November） and maintained for two months in the mist chamber at the relative humidity of （70±5）% and the tenlperature of （30±2）℃. In B. nutans, adventitious rooting occttrred in both types of cuttings in all the seasons with the best rooting in the summer season i.e., May （88% in culm cuttings） and the least in winter. On the contrary, adventitious rooting was recorded only in culm cuttings in spring and summer season in B. tulda. IBA treatment significantly enhanced rooting, root number and root length; registering 14 to 17 times improvement over control in the best rooting season. Three factor- interactions （season × cutting type × IBA treatment） were significant for rooting in B. nutans and all characteristics, except sprouting in B, tulda. Thus, single-node culm and culm-branch cuttings in B. nutans and culm cuttings in B. tulda treated with 2 mM IBA during spring （February） to summer （May） season are recommended for their clonal multiplication.

关 键 词：Bambusa nutans Bambusa tulda branch cuttings culmcuttings ROOTING SPROUTING 

分 类 号：S795[农业科学—林木遗传育种]