Cacti ni ibimera bidasanzwe kandi bishimishije byahindutse kugirango bibeho muri bimwe mubidukikije bikaze kandi byumye kwisi.Ibi bimera byumye bifite ubushobozi budasanzwe bwo guhangana n’amapfa akabije, bigatuma bishushanya kandi birashimwa.Muri iki kiganiro, tuzacengera mu isi ya cacti tunasuzume impamvu badapfa kubera inyota.
Kimwe mu bintu biranga cacti ni ibiti byacyo.Bitandukanye nibimera byinshi bishingiye kumababi yabyo kuri fotosintezeza, cacti yagiye ihinduka kugirango ibike amazi mumibabi yabyo kandi yinyama.Ibiti bikora nkibigega, bituma cacti ibika amazi menshi mugihe cyimvura cyangwa ubuhehere bwinshi.Ubu buryo bwo kubika amazi bwubatswe butuma cacti ibaho igihe kirekire cy’amapfa, kuko ashobora kwinjira muri ibyo bigega igihe amazi ari make.
Byongeye kandi, cacti yahinduye amababi kugirango igabanye amazi.Bitandukanye nuburyo bugari kandi bubabi buboneka mubihingwa byinshi, cacti yakoze amababi yahinduwe yitwa umugongo.Urutirigongo rukora intego nyinshi, imwe murimwe igabanya gutakaza amazi binyuze muri transpiration.Mugihe ufite ubuso buto kandi buto bwerekanwe nikirere, cacti irashobora kubungabunga amazi make bafite.
Usibye ubushobozi bwabo bwo kubika amazi budasanzwe, cacti yanateje imbere imiterere yihariye ya physiologique na anatomique kugirango ibeho mugihe cyumutse.Kurugero, cacti ifite uduce twihariye twitwa CAM (Crassulacean Acid Metabolism) ibemerera gukora fotosintezeza nijoro, mugihe ubushyuhe bukonje kandi ibyago byo gutakaza amazi binyuze mumuka ni bike.Iyi fotosintezeza nijoro ifasha cacti kubungabunga amazi kumanywa, mugihe izuba ryinshi rishobora gutakaza vuba amazi yabo.
Byongeye kandi, cacti ifite sisitemu ntoya kandi ikwirakwira mu mizi ibafasha gukuramo vuba amazi yose aboneka mu butaka.Iyi mizi idakwirakwira mu buryo butambitse aho kuba bwimbitse, bigatuma ibimera bifata amazi ahantu hanini cyane.Ihindagurika ry’imihindagurikire y'ikirere ryemerera cacti gukoresha neza imvura ntoya cyangwa ikime gito, bikagabanya amazi menshi.
Igishimishije, cacti nayo ni umuhanga mukugabanya gutakaza amazi muri rusange binyuze mubikorwa bita acide crassulacean metabolism.Ibimera bya CAM, nka cacti, bifungura stomata nijoro kugirango bifate dioxyde de carbone, bigabanya gutakaza amazi mugice gishyushye cyumunsi.
Mu gusoza, cacti yahinduye byinshi mu guhuza n'imihindagurikire y'ikirere ibafasha gutera imbere ahantu humye kandi birinde gupfa inyota.Ibiti byacyo bibika ububiko bwamazi, amababi yahinduwe agabanya gutakaza amazi, fotosintezeza ya CAM ituma gufata dioxyde de carbone nijoro, kandi imizi yabyo igabanya amazi menshi.Ihindagurika ridasanzwe ryerekana kwihanganira no kubaho kwa cacti, bikababera nyampinga nyayo yo kwihanganira amapfa.Ubutaha nuhura na cactus mu butayu, fata akanya ushimire imihindagurikire idasanzwe ituma ishobora kwihanganira no gutera imbere mubidukikije bisa nkaho bidashoboka.
Igihe cyo kohereza: Kanama-31-2023