断根処理に伴うキャッサバキャノピー熱画像の経時的変化 : 異なる土壌水分条件下における品種間比較

概要

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In tropical region, cassava is an important tuber crop for starch production, and also known as one of the drought resistant crops. It is reported that cassava reduces water use by following an avoidance strategy of stomatal closure and leaf area reduction during drought. In addition to these responses, we assumed that the tuberous roots can function as a water reservoir when soil water is limited. If this is true, a rapid decrease in the transpiration rate could occur after cutting the tuberous roots because of interruption of water supply from those roots. Cassava as well as other crop species is known to increase the leaf temperature when the stomata are closed and evaporative cooling is reduced. To examine the hypothesis, we investigated time course changes in the canopy temperature of cassava with the tuber cutting through the thermal image analyses.
日本作物学会の論文
1999-06-10