We studied the morpho-anatomic characteristics of the clonal growth of root suckers of Populus pruinosa by the conventional paraffin method. Transverse lateral roots were formed by periderm, secondary vascular tissue, and the tetrarch’s primary xylem, with developed vascular rays and secondary elongated parenchyma in secondary vascular tissues. The clonal growth of root suckers of P. pruinosa is based on the development and growth of adventitious buds on
transverse lateral roots. Adventitious buds originated from cork cambium of transverse lateral roots and expressed the time characteristics of synchronous and asynchronous generation and the spatial characteristics of single-point and multi-point gathered generation. The cork cambium cells formed primordia of adventitious buds by cell division. The cell division, proliferation, and differentiation of adventitious primordia formed visible primordia on the surface of transverse lateral roots and directly developed as root suckers. The features of adventitious bud development, distribution, and growth were the key reason for root suckers to keep growing to different sizes and form a densely fasciculate shape. P. pruinosa has good ability for clonal growth of root suckers.
Zhijun Li, Peipei Jiao, Zhengli Zhou, Qian Li, Jianqiang Li
. Morphological and Anatomical Features of Root Sucker Propagation of Populus pruinosa[J]. Chinese Bulletin of Botany, 2012
, 47(2)
: 133
-140
.
DOI: 10.3724/SP.J.1259.2012.00133
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