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Title: Effects of growth regulators and growth media on root-hair development of Poncirus trifoliate.
Authors: ZHANG De-jian; XIA Ren-xue; CAO Xiu; WANG Peng; SHU Bo
Abstract: By using river sand and mixed soil as growth media, and treating with different concentration IBA, ETH, and NAA, this paper studied the root-hair development of Poncirus trifoliate seedlings, and the development cycle and distribution pattern of the root-hairs under phosphorus de- ficiency in sand culture. The root-hairs had a development cycle of about 4 days, and formed block-shaped and clumped, mainly around root, and with uneven distribution. Sand culture gave rise to the production of more root hairs, with an average of 486.3 per tap root, and treating with 1.0 μmol•L-1 of IBA and ETH notably promoted root-hair development. The phosphorous deficiency in sand culture induced more root hair formation (636.3 per tap root). Mixed soil culture produced lesser root-hairs (212.3 per tap root), and all the test growth regulators had no obvious effects on the root-hair development.
Subjects: ROOT development; GROWTH regulators; ORANGES; SEEDLINGS; DEFICIENCY diseases; SOIL management; PLANTS
Publication: Chinese Journal of Applied Ecology / Yingyong Shengtai Xuebao, 2011, Vol 22, Issue 6, p1437
ISSN: 1001-9332
Publication type: Academic Journal

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Effects of growth regulators and growth media on root-hair development of Poncirus trifoliate.