RELATIONSHIP BETWEEN PLANT TYPE AND ROOT GROWTH IN RICE
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概要
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The relationship between plant type and root growth was examined using the root box technique. Correlation studies on 1,081 varieties or lines indicated that the deep root system is correlated with tall plant stature and low tiller number; it is not closely correlated with long growth duration. Subsequent studies on two isogenic lines of early Peta with different plant heights, however, indicated that plant height is not related to rooting depth. The same conclusion was reached from a comparison of three sorghum varieties with different plant heights. The shortest of the three varieties had the deepest root system. Examination of tillering habit and root growth of individual shoots (tiller or main culm) clearly showed that early tillers have more and longer roots than do late tillers regardless of the tiller order and the position of the node from which they emerge. Thus, a high tillering plant tends to have a short root system. The advantages and disadvantages of low- or high-tillering varieties in different water regimes are discussed.
- 一般社団法人日本土壌肥料学会の論文
著者
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Bhattacharjee D.p.
The International Rice Research Institute Los Banas Laguna Philippines
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YOSHIDA S.
The International Rice Research Institute, Los Banas, Laguna, Philippines
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CABUSLAY G.S.
The International Rice Research Institute, Los Banas, Laguna, Philippines
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Cabuslay G.s.
The International Rice Research Institute Los Banas Laguna Philippines