Izityalo yenza uninzi lwehlabathi elisingqongileyo Kwaye akunandaba nokuba siphi, ixesha okanye imozulu efanayo, kuyakuhlala kukho izityalo eziyinxalenye yenkangeleko yomhlaba, kuba ngaphandle kwehlabathi kunye nokuxinana kwezixeko, kuya kuhlala kufumaneka iintlobo zezityalo uzama ukuthatha indawo yezithuba ezimngqongileyo.
Le meko ibe ngu ngokoyikisayolinjalo inani le imihlaba kunye neendawo eziluhlaza icinywe ziindlela ezahlukeneyo zabantu, iphakamise inkxalabo kwiingcali nakwabo banenkxalabo malunga ne ikamva lomhlaba.
izityalo zinjalo ntonye nobomi, kuba enkosi kubo sine amanqanaba eoksijini ayafuneka ukugcina ingqibelelo yethu.
Ukufunda okulula, kusivumela ukuba siqonde ukubaluleka kunye nefayile ye- Indima edlalwa zizityalo kubomi bomntu. Ukususela kule ndawo, izityalo ziye zaba yinto yokufunda ixesha elide, apho kukho ezininzi ukufumanisa ezenza ezi zinto ziyinto ebalulekileyo kuphuhliso lomntu, zivumela, hayi kuphela Ummiselo weoksijini (photosynthesis), kodwa negalelo lezakhamzimba kumayeza awahlukeneyo esiwafumanayo namhlanje.
Kuyenzeka kwakhona Ukuqaqambisa ukusetyenziswa kunye nokusetyenziswa kweziqhamo, Kunye nemifuno, ezingaswelekiyo kwizitya ezininzi eziqhelekileyo.
Enye ye iinkqubo ezitsala ingqalelo, hayi kuphela ziingcali, kodwa nakuluntu ngokubanzi, yile iintyatyambo, isigaba apho igama laso libonisa, isityalo siqala ivule iintyatyambo zayo kwaye kuxhomekeke kuhlobo lwesityalo, sinokubona ukukhula kweentyatyambo ngobukhulu obahlukeneyo, amavumba kunye neepropathi eya kuyenza le ibe yinto eyodwa ngaphakathi kohlobo lwayo. Ngamafutshane, yinkqubo emnandi kakhulu kwabo bayigcinayo.
Yenzeka nini le nkqubo? Zenzeka nini iintyatyambo?
Inkqubo yeentyatyambo yinkqubo eqhelekileyo kwenzeka entwasahloboOko kukuthi, ngandlela thile, kuyinto eyaziwayo kubantu abaninzi. Kodwa ke,esona sizathu ukusukela koku?
Izityalo, njengabantu, ziyonwabela amalungu e-receptor ophetheyo ukuhlalutya iimeko zokusingqongileyo, konke oku, ukuze umzimba ukwazi ukuziqhelanisa ngokufanelekileyo ne imeko apho wayeza kuthotyelwa khona. Oku yi inkqubo yendalo, Ayimangalisi kwaphela, apho sinokujonga khona kuhlobo lwemozulu okanye okusingqongileyo utshintsho oluthile kulwakhiwo kwesiqu sesityalo.
Intwasahlobo, ewe, yenye yeemeko apho izityalo kufuneka zinyamezele enye uhlobo lwemozulu, eguqulela kutshintsho olukhulu ukusuka kubume bayo. Ukwenza oku, kufuneka sikhankanye Imolekyuli ekhethekileyo ebizwa ngokuba yi-florigen.
Yintoni iflorigeno?
Njengoko besesitshilo ngaphambili, i utshintsho kulwakhiwo lomzimba Iya kuxhomekeka kwimeko yendalo esingqongileyo, apho baya kuthi babonwe okanye babhaqwe ngamalungu athile. Kwimeko yezityalo, yi-florigen, iimolekyuli ezinoxanduva lokuhlalutya ubushushu ezikhoyo kwindalo esingqongileyo. Kananjalo noku, ezinye ii-receptors zesityalo zinoxanduva ukumisela imozulu.
Kule nto, isityalo siza kubakho utshintsho oluthile olusekwe kulwazi ifunyenwe ngabamkeli bayo.
Ityala lentwasahlobo lenza i-florigen yezityalo zendawo ukuya kwiintyatyambo, iphenjelelwa ikakhulu bubushushu. Inkqubo ye- eLuzi ngomnye wemibandela ekwaziyo ukwenza le nkqubo kwaye njengoko sisazi kakuhle, yomelele Imitha yelanga Ezithiwe thaca kwelo xesha lonyaka ziya kukhokelela ekukhawuleziseni kweentyatyambo zezityalo.
Esi sizathu sokuba izityalo zihlala ziqhakaza entwasahloboKunjalo, njengakwiimeko ezininzi zezinto eziphilayo, a umxholo wokuziqhelanisa.