Cacti yakasarudzika uye inonakidza zvidyarwa zvakashanduka kuti zvirarame mune dzimwe dzakaoma uye dzakaoma nharaunda paPasi.Izvi zvinomera zvine prickly zvinokwanisa kutsungirira kusanaya kwemvura zvakanyanya, zvichiita kuti ive mbiri uye inoyemurika.Muchinyorwa chino, tichapinda munyika yecacti uye tiongorore kuti sei vasingafe nenyota.
Chimwe chezvinhu zvinonyanya kusiyanisa zvecacti matavi avo anonaka.Kusiyana nemiti mizhinji inovimba nemashizha ayo e photosynthesis, cacti yakashanduka kuti ichengetedze mvura mumatanda ayo akakora uye ane nyama.Aya madzinde anoshanda semadhamu, achibvumira cacti kuchengeta yakawanda yemvura panguva yekunaya kwemvura kana hunyoro hwepamusoro.Iyi yakavakirwa-mukati yekuchengetera mvura sisitimu inogonesa cacti kurarama nguva refu yekusanaya kwemvura, sezvo ichigona kupinda munzvimbo idzi kana mvura iri kushomeka.
Uyezve, cacti yakagadzirisa mashizha ayo kuderedza kurasikirwa kwemvura.Kusiyana nehupamhi uye mashizha ane mashizha anowanikwa mumiti yakawanda, cacti yakagadzira mashizha akagadziridzwa anonzi spines.Iyi mitsipa inoshandisa zvinangwa zvakawanda, chimwe chazvo chiri kuderedza kurasikirwa kwemvura kuburikidza nekuputika.Nekuva nenzvimbo shoma uye diki dzepamusoro dzakaratidzwa mumhepo, cacti inogona kuchengetedza mvura shoma yavanayo.
Pamusoro pekugona kwavo kuchengetedza mvura kunoshamisa, cacti yakagadzirawo yakasarudzika physiological uye anatomical adaptation kuti vararame munzvimbo dzakaoma.Semuenzaniso, cacti ine matishu akasarudzika anonzi CAM (Crassulacean Acid Metabolism) anovabvumira kuita photosynthesis husiku, kana tembiricha iri kutonhorera uye njodzi yekurasika kwemvura kuburikidza nekubuda kwemhepo yakadzikira.Iyi photosynthesis yeusiku inobatsira cacti kuchengetedza mvura mukati mezuva, apo zuva rinopisa rinogona kukurumidza kupedza mvura yavo.
Uyezve, cacti ine midzi isina kudzika uye yakapararira inovagonesa kukurumidza kutora chero hunyoro huripo kubva muvhu.Iyi midzi isina kudzika inopararira yakatwasuka pane kudzika, ichibvumira zvirimwa kutora mvura kubva panzvimbo yakakura.Uku kuchinjika kunobvumira cacti kuti ishandise zvakanyanya kunyangwe kudiki kunaya kwemvura kana dova, zvichinyatso wedzera kunwa kwavo kwemvura.
Sezvineiwo, cacti zvakare shasha dzekudzikisa kurasikirwa kwavo kwese kwemvura kuburikidza nemaitiro anonzi crassulacean acid metabolism.Zvidyarwa zveCAM, senge cacti, zvinovhura stomata yavo husiku kuti itore kabhoni dhaikisaidhi, kuderedza kurasikirwa kwemvura panguva dzinopisa kwazvo dzezuva.
Mukupedzisa, cacti yakashandura kuwanda kwezvigadziriso zvinovagonesa kubudirira munzvimbo dzakaoma uye kudzivirira kufa nenyota.Madzinde avo anonaka anochengetera matura emvura, mashizha awo akagadziridzwa anoderedza kurasikirwa kwemvura, yavo CAM photosynthesis inobvumira kubatwa kwehusiku kabhoni dhaimoni, uye midzi yavo isina kudzika inowedzera kunyura kwemvura.Aya magadzirirwo anoshamisa anoratidza kusimba uye kupona kwecacti, zvichivaita shasha dzechokwadi dzekutsungirira kusanaya kwemvura.Nguva inotevera yaunosangana necactus mugwenga, tora nguva yekutenda zvinoshamisa zvigadziriso izvo zvinoibvumira kutsungirira uye kubudirira munzvimbo inoita seisingagarike.
Nguva yekutumira: Aug-31-2023