|Table of Contents|

Effect of Root Pruning on the Growth and Photosynthesis of Young Apple Tree in Drought Area(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年16
Page:
36-39
Research Field:
Publishing date:

Info

Title:
Effect of Root Pruning on the Growth and Photosynthesis of Young Apple Tree in Drought Area
Author(s):
TAO Jia; SHI Pei; QIAO Hengbo; BAI Hong; LI Bingzhi; FAN Chonghui
(College of Horticulture，Northwest Agriculture and Forestry University，Yangling，Shaanxi 712100)
Keywords:
root pruning; drought; apple; photosynthesis; spring shoot; leaf
PACS:
-
DOI:
10.11937/bfyy.201516008
Abstract:
Controlling vegetative growth of the acrial part is an important work in fruit production，both root pruning and water stress are all effective measures in suppressing the vegetative growth of fruit trees.The present study was established to determine the effect of root pruning and water stress on the growth and photosynthesis of 2-year-old apple trees.The results showed that drought reduced the foliar photosynthetic rate (Pn)，transpiration rate (Tr)，stomatal conductance (Gs) and intercellular CO2 concetration(Ci)，and increased the water use efficiency，but root pruning had no effect on these parameters.Root pruning stimulated many new roots，but the root recovery capability decreased under drought condition.The variation of spring shoot and leaf biomass，spring shoot length，foliar length，width and area，et al.They were all in a same trend T0>T1>T2>T3. In total，the apple leaf photosynthesis and root recovery capability were greatly reduced，and the growth of spring shoot and leaf were greatly inhibited.

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Last Update: 2015-09-01