Zonke izitshalo emvelweni zinokwehluka kwazo. Ngokwesigaba sobulili, zonke izinhlobo zezimbali zihlukaniswe ngamaqembu alandelayo:
- i-monoecious;
- dioecious;
- ziningi.
Izitshalo ezinomsoco yilezo ezinezimbali zesifazane kwabanye abantu nezimbali zesilisa kwabanye. Impova yabo ivela ngendlela enqamulelayo. Ngakho-ke izithelo zezihlahla ezi-dioecious ziboshiwe uma impova yabantu abavela ezimbali zesilisa idluliselwa ezihlahleni ezinezimbali zesifazane. Le nqubo ibingeke yenzeke ngaphandle kwezinyosi, lapho impova enye incike khona. Ububi bedivayisi enjenge-dioeciousness ukuthi imbewu ayiveli ku-50% wezitshalo zohlobo oluthile. Ngokwemvelo, akukho ngaphezu kuka-6% wezinhlobo ezinjalo ezitholakalayo. Lokhu kufaka phakathi izitshalo ezilandelayo:
UWillow
I-Sorrel
Mistletoe
ULaurel
Imbabazane
I-Poplar
Hemp
Aspen
Umehluko phakathi kwabesilisa nabesifazane
Ukuhlukanisa phakathi kwezinhlobo zesilisa nezesifazane ezidliwayo njalo kunzima, labo abatshala izimbali, izihlahla nezinye izitshalo kumele bafunde ukucacisa ubulili. Izimbali zabesilisa zineziqu ezinamachashazi impova, futhi inhlamba yabo ayithuthuki. Izimbali zesifazane cishe njalo azinawo amandla.
Uma umuthi engadini ungatheli izithelo, kungenzeka ukuthi ungowezinhlobo ze-dioecious. Ukulungisa lesi simo, udinga ukutshala isitshalo sohlobo olufanayo eduze kwaso, bese sibonga izinyosi ezisiza izimbali ukuthi zenze impova, isihlahla sizoqala ukuthela izithelo.
Izimbali zesilisa zezitshalo ezi-dioecious zivame ukukhiqiza impova eningi. Lokhu kungenxa yokuthi izinsikazi azihlali zikhula eduze, okusho ukuthi kufanele kube nempova eyenele yokuvotela izitshalo zesifazane ezikhula kude. Kukhanya futhi kungasakazeka ezindaweni ezikude ngokuvunguza komoya.
Kwenzeka kanjani ukuthi impova ye-dioecious yenzeke?
I-fig is a dioecious plant, futhi esibonelweni sayo sizobheka ukuthi impova ivela kanjani. Inezimbali ezincane futhi ezingamangalisi. Impova ingenxa yeminyovu ene-blastophagous. Insikazi yalolu hlobo ibheka izimbali zesilisa lapho kuhlala khona iminyovu yesilisa. Ngakho-ke, umnyovu uqoqa impova ezimbalini zesilisa bese ubola impova yezimbali zesifazane. Ngakho-ke ukuvundiswa kwenzeka ngeminyovu, futhi ngenxa yazo, izimbali zamakhiwane ziyimpova.
I-Dioeciousness iyisimo esikhethekile sezitshalo, esivezwa iqiniso lokuthi uhlobo olulodwa lunabesifazane nabesilisa, kepha kaningi kunzima ukucacisa ubulili babo. Ezimweni ezinjalo, abalimi bazama ukufuya izinhlobo ezintsha zemonoecious ukuze ngokuzayo, abalimi bangabi nezinkinga ngokuzala kwezitshalo.
