IGibberellin luhlobo lwe-tetracyclic diterpene plant hormone, kwaye isakhiwo sayo esisisiseko yi-20 carbon gibberelline. IGibberellin, njenge-hormone eqhelekileyo esebenza kakuhle kakhulu kwaye ilawula ukukhula kwezityalo ngokubanzi, idlala indima ebalulekileyo ekulawuleni ukukhula kwamahlumela ezityalo, amagqabi, iintyatyambo kunye neziqhamo.
Ukusetyenziswa kwe-gibberellin
►Bfunda imbewu eleleyo.
►Rlawula ukukhula kwezityalo.
►Culawulo lwexesha lokuqhakaza kweentyantyambo.
►Pumahluko wentyatyambo yendoda ye-romote.
►Fukugcinwa kwenkunkuma.
Izizathu zokuqhekeka kweziqhamo
Ukuqhekeka kweziqhamo yinto ebangela ukungalingani kwezityalo emzimbeni. Isizathu esiyintloko kukuba ukukhula kwexolo akukwazi ukuziqhelanisa nokukhula kwexolo lesiqhamo. Emva kophando kunye nesishwankathelo seengcali, izinto ezibangela ukuqhekeka kweziqhamo zezi: uxinzelelo lwe-turgor kwixolo, izinga lokukhula kwexolo kunye nexolo elingalungelelaniswanga, ukuthamba kwesikhumba sesiqhamo kunye nolwakhiwo lwesikhumba sesiqhamo. Phakathi kwazo, uxinzelelo lokudumba kwe-pericarp luchaphazeleke ngamanzi kunye nomxholo we-gibberellin kunye ne-abscisic acid; Amandla oomatshini e-pericarp achaphazeleke ngumxholo we-calcium kunye nezinto zodonga lweseli; Ukwandiswa kwe-pericarp kuchaphazeleka yi-gene yokuphumla kweseli. Xa uxinzelelo lokudumba, amandla oomatshini kunye nokwandiswa kwe-pericarp kungalingani, ukuqhekeka kweziqhamo kwenzeka.
Ngexesha lemvula, amanzi amaninzi aya kwandisa uxinzelelo lokudumba kwexolo, nto leyo ebangela ukuba iziqhamo ziqhekeke. Kwiinyanga ezomileyo nezinemvula, isiqhamo sikhula ngokukhawuleza kunexolo. Xa kufika ixesha lemvula, izityalo zifunxa amanzi kunye nezondlo ngokukhawuleza. Ukungalingani kwesantya sokukhula phakathi kwesiqhamo kunye ne-pericarp kunye nokwanda koxinzelelo lokudumba kwe-pericarp kukhokelela ekuqhekekeni kweziqhamo. Ukutshiza igesi kwiziqhamo zezityalo ukuze kulinganiswe inkqubo yoxinzelelo lwexolo kunye ne-pulp kunokuthintela ukuqhekeka kweziqhamo.
Okwangoku, ezinye iincwadi kunye neerekhodi zovavanyo zibonisa ukuba olu hlobo lwe-surfactant lunempembelelo encinci yokusebenzisana kwi-gibberellin growth regulators. Ukugxininisa ngokungakhathali impembelelo yokusebenzisana kwezongezo kuya kunyusa iindleko zabalimi. Ke ngoko, sicebisa ukuba indibaniselwano efanelekileyo ye-growth regulators kunye nezongezo kufuneka zidityaniswe ngokwesayensi ngokweempawu kunye neemfuno zemifuno kunye neziqhamo kumanqanaba okukhula ahlukeneyo.
Binzuzo
♦Ukwakheka kwefilimu kumagqabi okanye kwiziqhamo kunokunciphisa ukukhuhla kwamanzi emvula kwiindawo ezisebenzayo ezifana nabalawuli bokukhula kunye nemithi yokubola, kuthintele ukusetyenziswa ngokuphindaphindiweyo kwaye kunciphise iindleko.
♦Yenza umaleko wokukhusela ilanga kumphezulu wamagqabi kunye nomphezulu wesiqhamo, unciphise ngempumelelo umonakalo obangelwa yi-ultraviolet kunye nelanga phantsi kwelanga elishushu, kwaye udlale indima yokuvaleka kwamanzi kunye nokuchasana nokuphefumla.
♦Linganisa inkqubo yokwandisa phakathi kweziqhamo kunye namaxolo ukuze uthintele ukuqhekeka.
♦Emva kokutshiza i-quantitative growth regulator ukuphucula umbala weziqhamo, ingatshizwa ukuze kwandiswe ixesha lokubonelelwa kweziqhamo.
♦Idityaniswe nabalawuli bokukhula, inika isiqinisekiso esipheleleyo seziqhamo nemifuno kumanqanaba okukhula ahlukeneyo.
Ixesha lokuthumela: Februwari-15-2022