草原与草坪
草原與草坪
초원여초평
GRASSLAND AND TURF
2015年
4期
54-60
,共7页
除草剂%燕麦%抗氧化酶活性
除草劑%燕麥%抗氧化酶活性
제초제%연맥%항양화매활성
herbicides%oat%antioxidant enzyme activity
通过盆栽试验测定了2,4-D 丁酯、二甲·溴苯腈、氯氟吡氧乙酸和2甲4氯钠4种除草剂及其不同浓度对白燕2号燕麦叶片超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)、丙二醛(MDA)和可溶性糖含量的影响。结果表明：除草剂能引起燕麦叶片生理特性的改变,随着药后时间的延长,POD、SOD 酶活性呈现先升高后降低的变化趋势；CAT 活性变幅较小,呈现先略降低,再升高的变化；MDA 和可溶性糖含量逐渐上升且始终高于对照,高浓度氯氟吡氧乙酸(T9)处理在药后30 d达到最高,分别为0.1540μmol/gFW 和0.8277%。高浓度除草剂对燕麦苗期的胁迫作用显著大于低浓度。供试的4种除草剂中,2甲4氯钠对燕麦叶片 POD、SOD 活性和可溶性糖含量的影响较大,高浓度使它隆对 MDA 含量有显著影响,高浓度2,4-D 丁酯对 CAT 活性影响较大,低浓度2,4-D 丁酯、二甲·溴苯腈胁迫较小,对燕麦幼苗比较安全。
通過盆栽試驗測定瞭2,4-D 丁酯、二甲·溴苯腈、氯氟吡氧乙痠和2甲4氯鈉4種除草劑及其不同濃度對白燕2號燕麥葉片超氧化物歧化酶(SOD)、過氧化物酶(POD)、過氧化氫酶(CAT)、丙二醛(MDA)和可溶性糖含量的影響。結果錶明：除草劑能引起燕麥葉片生理特性的改變,隨著藥後時間的延長,POD、SOD 酶活性呈現先升高後降低的變化趨勢；CAT 活性變幅較小,呈現先略降低,再升高的變化；MDA 和可溶性糖含量逐漸上升且始終高于對照,高濃度氯氟吡氧乙痠(T9)處理在藥後30 d達到最高,分彆為0.1540μmol/gFW 和0.8277%。高濃度除草劑對燕麥苗期的脅迫作用顯著大于低濃度。供試的4種除草劑中,2甲4氯鈉對燕麥葉片 POD、SOD 活性和可溶性糖含量的影響較大,高濃度使它隆對 MDA 含量有顯著影響,高濃度2,4-D 丁酯對 CAT 活性影響較大,低濃度2,4-D 丁酯、二甲·溴苯腈脅迫較小,對燕麥幼苗比較安全。
통과분재시험측정료2,4-D 정지、이갑·추분정、록불필양을산화2갑4록납4충제초제급기불동농도대백연2호연맥협편초양화물기화매(SOD)、과양화물매(POD)、과양화경매(CAT)、병이철(MDA)화가용성당함량적영향。결과표명：제초제능인기연맥협편생리특성적개변,수착약후시간적연장,POD、SOD 매활성정현선승고후강저적변화추세；CAT 활성변폭교소,정현선략강저,재승고적변화；MDA 화가용성당함량축점상승차시종고우대조,고농도록불필양을산(T9)처리재약후30 d체도최고,분별위0.1540μmol/gFW 화0.8277%。고농도제초제대연맥묘기적협박작용현저대우저농도。공시적4충제초제중,2갑4록납대연맥협편 POD、SOD 활성화가용성당함량적영향교대,고농도사타륭대 MDA 함량유현저영향,고농도2,4-D 정지대 CAT 활성영향교대,저농도2,4-D 정지、이갑·추분정협박교소,대연맥유묘비교안전。
The effect of 4 different kinds of herbicides on physiological and biochemical indexes of oat at see-ding stage were studied through pot experiment by measuring the activity of SOD,POD,CAT,MDA and soluble sugar content.The result indicated that the herbicides could lead to variation of leaf physiological and biochemi-cal indexes.With the increasing days after treatments,POD,SOD activity increased firstly,and then reduced. CAT activity showed a slight decline before increase.MDA and the dissoluble sugar content rose up,and reached 0.1540 μmol/g,FW and 0.827 7% after treatment for 30 days with higher dosage of fluroxypyr.Higher dosage herbicides had severer stress on oat than lower ones.Among 4 herbicides,MCPA-Na had stronger impact on POD,SOD activity and dissoluble sugar content in leaf.Fluroxypyr had appreciable impact on MDA content, Higher dosage 2,4-D Butylate ester had stronger impactt on CAT activity.Lower dosage of 2,4-D butylate ester and bromoxynil octanoate plus MCPA-sodium were safe for oat seedlings.
