Ubuthi obuphansi, asikho isilawuli sokukhula kwesitshalo esiluhlaza ezinsalela - i-prohexadione calcium

I-Prohexadione iwuhlobo olusha lwesilawuli sokukhula kwesitshalo se-cyclohexane carboxylic acid.Yasungulwa ngokuhlanganyela yiJapan Combination Chemical Industry Co., Ltd. kanye ne-BASF yaseJalimane.Ivimbela i-biosynthesis ye-gibberellin ezitshalweni futhi yenza izitshalo Okuqukethwe kwe-gibberellin kuyancishiswa, ngaleyo ndlela kubambezeleka futhi kulawule ukukhula kwemilenze yezitshalo.Isetshenziswa kakhulu ezitshalweni ze-cereal, ezifana ukolweni, ibhali, ukumelana nerayisi, ingasetshenziswa kumakinati, izimbali kanye notshani ukulawula ukukhula kwabo.

1 Isingeniso Somkhiqizo

Igama elivamile lesiShayina: i-procyclonic acid calcium

Igama elivamile lesiNgisi: Prohexadione-calcium

Igama lenhlanganisela: calcium 3-oxo-5-oxo-4-propionylcyclohex-3-enecarboxylate

Inombolo yokungena ye-CAS: 127277-53-6

Ifomula yemolekyuli: C10H10CaO5

Isisindo samangqamuzana esihlobene: 250.3

Ifomula yesakhiwo:

Izakhiwo zomzimba namakhemikhali: Ukubukeka: impushana emhlophe;indawo yokuncibilika > 360 ℃;ingcindezi yomhwamuko: 1.74×10-5 Pa (20℃);i-octanol/i-partition coefficient yamanzi: I-Kow lgP=-2.90 (20℃);ukuminyana: 1.435 g/mL;Ukuhlala kukaHenry: 1.92 × 10-5 Pa m3mol-1 (calc.).Ukunyibilika (20℃): 174 mg/L emanzini acwecwe;i-methanol 1.11 mg/L, i-acetone 0.038 mg/L, n-hexane＜0.003 mg/L, toluene 0.004 mg/L, ethyl acetate＜0.010 mg/L, iso Propanol 0.105 mg/L, dichloromethane 0.004 mg/L0.Ukuzinza: izinga lokushisa elizinzile lifika ku-180 ℃;i-hydrolysis DT50<5 d (pH=4, 20℃), 21 d (pH7, 20℃), 89 d (pH9, 25℃);emanzini emvelo, i-photolysis yamanzi i-DT50 ingu-6.3 d, i-photolysis DT50 emanzini acwengekile yayiyi-2.7 d (29～34℃, 0.25W/m2).

Ubuthi: Umuthi wokuqala we-prohexadione uyisibulala-zinambuzane esinobuthi obuphansi.I-LD50 yomlomo we-LD50 (owesilisa/owesifazane) wamagundane ngu-> 5,000 mg/kg, i-LD50 ye-percutaneous (owesilisa/owesifazane) yamagundane i>2,000 mg/kg, kanye ne-LD50 yomlomo ebukhali yamagundane (owesilisa/owesifazane) is> 2,000 mg/kg.Ubuthi bokuphefumula i-LC50 (amahora angu-4, owesilisa/owesifazane)> 4.21 mg/L.Ngesikhathi esifanayo, inobuthi obuncane ezinto eziphilayo ezizungezile njengezinyoni, izinhlanzi, amazeze amanzi, ulwelwe, izinyosi kanye nezikelemu.

Indlela yokwenza: Ngokuphazamisa ukwakheka kwe-gibberellic acid ezitshalweni, inciphisa okuqukethwe kwe-gibberellic acid ezitshalweni, ilawula ukukhula kwemilenze, ithuthukise ukuqhakaza nokuthela izithelo, ikhulise isivuno, ithuthukise izinhlelo zezimpande, ivikele ulwelwesi lwamaseli nolwelwesi lwe-organelle, futhi ithuthukise. ukumelana nokucindezeleka kwezitshalo.Ukuze kuvinjwe ukukhula kwe-vegetative engxenyeni engenhla yesitshalo futhi kukhuthaze ukukhula kokuzala.

2 Ukubhalisa

Ngokophenyo lwe-China Pesticide Information Network, kusukela ngoJanuwari 2022, sekubhaliswe isamba semikhiqizo engu-11 ye-prohexadione calcium ezweni lami, okuhlanganisa nezidakamizwa ezi-3 zobuchwepheshe kanye namalungiselelo angu-8, njengoba kukhonjisiwe kuThebula loku-1.

Ithebula 1 Ukubhaliswa kwe-prohexadione calcium ezweni lami

3 Amathemba emakethe

Njengomlawuli wokukhula kwezitshalo eziluhlaza, i-prohexadione calcium iyafana nezilawuli zokukhula kwezitshalo ze-paclobutrazol, i-niconazole ne-trinexapac-ethyl.Ivimbela i-biosynthesis ye-gibberellic acid ezitshalweni, futhi idlala indima ekwenzeni izitshalo ezincane, Indima yokulawula ukukhula kwezitshalo.Nokho, i-prohexadione-calcium ayinazo izinsalela ezitshalweni, akukho ukungcoliswa kwemvelo, kanye nomthelela omncane ezitshalweni ezilandelayo nasezitshalweni ezingahlosiwe.Kungashiwo ukuthi kunethuba elibanzi kakhulu lesicelo.