...(2) In addition to the suppression of transpiration, many plants flower at night because the insects that mediate fertilization are only active at night. (3) In order to efficiently use scarce water, plants have shallow, wide-reaching roots that can absorb large amounts of water at once during the rainy season (for example, the saguaro ( Carnegiea gigantea ) in the Arizona desert has roots that extend over an area twice its height), and they root deeply into the ground to obtain groundwater during the dry season (for example, the mesquite (Prosopis glandulosa ) has roots that extend tens of meters underground). (4) They have well-developed water-storing tissues in preparation for the dry season (cacti and other succulents), etc. *Some of the terminology that mentions "Prosopis glandulosa" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…(2)蒸散の抑制もさることながら,受精を媒介する昆虫が夜間にしか活動しないため,夜に開花するものが多いこと。(3)乏しい水分を効率よく利用するため,雨季に大量の水を一時に吸収できるよう根を浅く広範囲にめぐらしたり(たとえばアリゾナ砂漠のサグアロCarnegiea giganteaは,丈の2倍の直径範囲に根をはっている),乾季に地下水を得るため地中深く根を下ろしたり(たとえばメスキートProsopis glandulosaは地中数十mまで根を伸ばしている)すること。(4)乾季に備えての貯水組織がよく発達している(サボテンなど多肉植物)こと,などである。… ※「Prosopis glandulosa」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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