Minirhizotron Observation of Pigeonpea Root System after Waterlogging

Japanese Journal of Crop Science

Theertham Pradyumna RAO¹  Gayatri DEVI¹  Satoshi TOBITA¹  Osamu ITO¹  Ryoichi MATSUNAGA¹  Keuk-Ki LEE¹ 

关键词: Cajanus cajan (L.);    キマメ;    Minirhizotron;    根系;    Root system;    湛水;    Waterlogging;    ミニリゾトロン;   

DOI  :  10.1626/jcs.66.288

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

The root growth of pigeonpea plants [Cajanus cajan (L) Millsp.] was studied with a micro-video camera inserted into a glass tube embedded in the soil, and the effects of soil waterlogging were quantified. Daily changes in root length density (RLD) and the differences in root growth between waterlogged and control plants were calculated by adopting curve-fitting into the time-course data of RLD. Roots which suffered from waterlogging exhibited higher daily changes in RLD during the recovery process than unstressed roots. After waterlogging, an increase in RLD was first observed in the upper soil layers, and then in progressively deeper layers. This study demonstrates that root growth can be successfully studied by frequent observations of the same soil-plant interface through glass tubes. Furthermore, the effects of waterlogging can be adequately studied using this technique.

【 授权许可】

Unknown