I-Gibberellin uhlobo lwe-tetracyclic diterpene plant hormone, futhi isakhiwo sayo esiyisisekelo yi-20 carbon gibberelline. I-Gibberellin, njenge-hormone evamile esebenza kahle kakhulu futhi elawula ukukhula kwezitshalo nge-spectrum ebanzi, idlala indima ebalulekile ekulawuleni ukukhula kwamahlumela ezitshalo, amaqabunga, izimbali nezithelo.
Ukusetshenziswa kwe-gibberellin
►Bfunda ubuthongo bembewu.
►Rkhuthaza ukukhula kwezitshalo.
►Cukulawula isikhathi sokuqhakaza kwezimbali.
►Pukuhlukaniswa kwezimbali zesilisa ze-romote.
►Fukulondolozwa kwemfucuza.
Izimbangela zokuqhekeka kwezithelo
Ukuqhekeka kwezithelo kuyisici sokungalingani kwezitshalo. Isizathu esiyinhloko ukuthi ukukhula kwekhasi akukwazi ukuzivumelanisa nokukhula kwekhasi lezithelo. Ngemva kocwaningo kanye nesifinyezo sezazi, izici ezithonyayo eziholela ekuqhekekeni kwezithelo yilezi: ingcindezi ye-turgor ekhasi, izinga lokukhula elingahlelekile lekhasi nekhasi, ukuqina kwesikhumba sezithelo kanye nesakhiwo sesikhumba sezithelo. Phakathi kwazo, ingcindezi yokuvuvukala kwe-pericarp yathinteka ngamanzi kanye nokuqukethwe kwe-gibberellin kanye ne-abscisic acid; Amandla okusebenza kwe-pericarp athinteka okuqukethwe kwe-calcium kanye nezingxenye zodonga lweseli; Ukwanda kwe-pericarp kuthinteka yi-gene yokuphumula kweseli. Lapho ingcindezi yokuvuvukala, amandla okusebenza kanye nokwanda kwe-pericarp kungalingani, kwenzeka ukuqhekeka kwezithelo.
Ngesikhathi semvula, amanzi amaningi azokwandisa ingcindezi yokuvuvukala kwekhasi, okuholela ekuqhekekeni kwezithelo. Ezinyangeni ezomile nezinemvula, izithelo zikhula ngokushesha kunekhasi. Lapho kufika isikhathi semvula, izitshalo zimunca amanzi kanye nezakhamzimba ngokushesha. Ukungalingani kwesilinganiso sokukhula phakathi kwezithelo ne-pericarp kanye nokwanda kwengcindezi yokuvuvukala kwe-pericarp kuholela ekuqhekekeni kwezithelo. Ukufutha igesi ezithelweni zezitshalo ukuze kulinganiswe uhlelo lokucindezela kwekhasi ne-pulp kungavimbela ukuqhekeka kwezithelo.
Njengamanje, ezinye izincwadi kanye namarekhodi okuhlola abonisa ukuthi lolu hlobo lwe-surfactant lunomphumela olinganiselwe wokubambisana kubalawuli bokukhula be-gibberellin. Ukugcizelela ngokungaqondile umphumela wokubambisana kwezithasiselo kuzokhulisa izindleko zabalimi. Ngakho-ke, siphakamisa ukuthi inhlanganisela efanele yabalawuli bokukhula kanye nezithasiselo kufanele ihlanganiswe ngokwesayensi ngokwezici nezidingo zemifino nezithelo ezigabeni ezahlukene zokukhula.
Binzuzo
♦Ukwakheka kwefilimu emaqabunga noma izithelo kunganciphisa ukukhuhla kwamanzi emvula ezingxenyeni ezisebenzayo njengezilawuli zokukhula kanye nemithi yokubulala isikhunta, kugweme ukusetshenziswa okuphindaphindiwe futhi kunciphise izindleko.
♦Yakha ungqimba oluvikela ilanga ebusweni bamaqabunga kanye nobuso bezithelo, unciphise ngempumelelo umonakalo obangelwa yi-ultraviolet kanye nokukhanya kwelanga ngaphansi kwelanga elishisayo, futhi udlale indima yokuvaleka kwamanzi kanye nokulwa nokugobhoza.
♦Linganisa uhlelo lokukhulisa phakathi kwezithelo nekhasi ukuze uvimbele ukuqhekeka.
♦Ngemva kokufutha isilawuli sokukhula kwenani ukuze kuthuthukiswe umbala wezithelo, ingafuthwa ukuze kwandiswe isikhathi sokutholakala kwezithelo.
♦Kuhlanganiswe nabalawuli bokukhula, inikeza isiqinisekiso esiphelele sezithelo nemifino ezigabeni ezahlukene zokukhula.
Isikhathi sokuthunyelwe: Feb-15-2022