Root System Formation in Rice Plant : III. Quantitative studies
Root System Formation in Rice Plant : III. Quantitative studies
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水稻根系的形成：III．
DOI：
10.1626/jcs.57.26
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发表时间：
1988
影响因子：
--
通讯作者：
C. Kawashima
中科院分区：
文献类型：
--
作者：
C. Kawashima
以主茎叶数中等（16片）的水稻品种为研究对象，对根系形成进行了定量研究。根系的组成包括根数、根长、根系总量和根系表面积。抽穗前30 d左右，主茎和分蘖7的根系形成率分别高达40%和20%。在接下来的20天左右，主茎继续活跃生长。分蘖VII的活跃生长持续时间稍长。在主茎和分蘖七部，抽穗后根系形成完成。主茎根系的最终长度为1085 m，体积为24cm3，表面积为3622cm2。分蘖VII的根数为50、145根，长464m，体积11cm3，表面积1532cm2。根据这些数据估算出的单个山丘的根总大小为1,284,640根，长11,764米，体积为272cm3，表面积为39,000 cm2。
Quantitative studies on the root system formation were carried out on a rice cultivar which was intermediate in leaf number (16) on the main stem. The components of the root system studied included root number, root length, total volume and surface area, for all kinds of roots, i.e., primary, secondary and tertiary. The percentage of the root system formation was as high as 40% in the main stem and 20% in the tiller VII at about 30 days before heading. Within the next 20 days or so, active growth continued in the main stem. In the tiller VII, active growth continued slightly longer. In the main stem as well as the tiller VII, the root system formation completed just after heading. The ultimate size of the root system of the main stem was 120, 580 in number, 1, 085m in length, 24cm3 in volume 3, 622cm2 in surface area. In the tiller VII, the root size was 50, 145 in number, 464m in length, 11cm3 in volume, 1, 532cm2 in surface area. The total root size of a single hill estimated from these data was 1, 284, 640 in number, 11, 764m in length, 272cm3 in volume and 39, 000cm2 in surface area.