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Journal of Zhejiang University SCIENCE A 2003 Vol.4 No.4 P.469~473

http://doi.org/10.1631/jzus.2003.0469


Seminal, adventitious and lateral root growth and physiological responses in rice to upland conditions


Author(s):  YANG Ling, ZHENG Bing-song, MAO Chuan-zao, YI Ke-ke, Wu Yun-rong, WU Ping, TAO Qin-nan

Affiliation(s):  College of Life Sciences, Zhejiang University, Hangzhou 310029, China

Corresponding email(s):   docpwu@cls.zju.edu.cn

Key Words:  Oryza sativa L., Root growth, Upland conditions


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YANG Ling, ZHENG Bing-song, MAO Chuan-zao, YI Ke-ke, Wu Yun-rong, WU Ping, TAO Qin-nan. Seminal, adventitious and lateral root growth and physiological responses in rice to upland conditions[J]. Journal of Zhejiang University Science A, 2003, 4(4): 469~473.

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author="YANG Ling, ZHENG Bing-song, MAO Chuan-zao, YI Ke-ke, Wu Yun-rong, WU Ping, TAO Qin-nan",
journal="Journal of Zhejiang University Science A",
volume="4",
number="4",
pages="469~473",
year="2003",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2003.0469"
}

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%T Seminal, adventitious and lateral root growth and physiological responses in rice to upland conditions
%A YANG Ling
%A ZHENG Bing-song
%A MAO Chuan-zao
%A YI Ke-ke
%A Wu Yun-rong
%A WU Ping
%A TAO Qin-nan
%J Journal of Zhejiang University SCIENCE A
%V 4
%N 4
%P 469~473
%@ 1869-1951
%D 2003
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2003.0469

TY - JOUR
T1 - Seminal, adventitious and lateral root growth and physiological responses in rice to upland conditions
A1 - YANG Ling
A1 - ZHENG Bing-song
A1 - MAO Chuan-zao
A1 - YI Ke-ke
A1 - Wu Yun-rong
A1 - WU Ping
A1 - TAO Qin-nan
J0 - Journal of Zhejiang University Science A
VL - 4
IS - 4
SP - 469
EP - 473
%@ 1869-1951
Y1 - 2003
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2003.0469


Abstract: 
Understanding the growth and physiological responses of rice to upland conditions would be helpful for designing treatments to improve the tolerance of rice under a rainfed system. The objective of this study was to investigate the initiation,elongation and membrane stability of seminal, lateral and adventitious roots of upland rice after 9-d upland condition treatment. Compared with control roots under waterlogged conditions, upland water deficiency conditions favor seminal and lateral root growth over adventitious root growth by accelerating seminal root elongation, promoting lateral root initiation and elongation, and reducing the elongation and number of adventitious roots. Enhanced total root number and length resulted in increase of total root dry weight and thereby increasing the root-to-shoot ratio. Organic compound leakage from seminal root tips and adventitious roots increased progressively to some extent with upland culture duration, while significant increases in seminal root tips were the consequence of loss of membrane integrity caused by the upland-condition enhanced growth.

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Reference

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