热带作物学报
熱帶作物學報
열대작물학보
CHINESE JOURNAL OF TROPICAL CROPS
2012年
2期
243-247
,共5页
硝酸镧%蒲葵%耐寒性%生理指标
硝痠鑭%蒲葵%耐寒性%生理指標
초산란%포규%내한성%생리지표
La(NO3 )3%Livistona chinensis%Cold tolerance%Physiological indices
用0、100、200、300、400、500、600 mg/L硝酸镧溶液喷施蒲葵幼苗叶片作为处理,每天喷施1次,连续3d.在20、5、12和10℃下分别处理24h后测定叶片的丙二醛、可溶性糖和叶绿素含量以及叶绿素a/b的比值.结果表明:硝酸镧溶液处理的幼苗丙二醛含量都比对照低,而且随温度变化幅度小,而可溶性糖和叶绿素含量及叶绿素a/b比值均比对照高.硝酸镧处理可有效改善上述蒲葵幼苗的耐寒性生理指标,其中300 mg/L硝酸镧溶液对提高蒲葵幼苗的耐寒性生理指标具有显著的效应.
用0、100、200、300、400、500、600 mg/L硝痠鑭溶液噴施蒲葵幼苗葉片作為處理,每天噴施1次,連續3d.在20、5、12和10℃下分彆處理24h後測定葉片的丙二醛、可溶性糖和葉綠素含量以及葉綠素a/b的比值.結果錶明:硝痠鑭溶液處理的幼苗丙二醛含量都比對照低,而且隨溫度變化幅度小,而可溶性糖和葉綠素含量及葉綠素a/b比值均比對照高.硝痠鑭處理可有效改善上述蒲葵幼苗的耐寒性生理指標,其中300 mg/L硝痠鑭溶液對提高蒲葵幼苗的耐寒性生理指標具有顯著的效應.
용0、100、200、300、400、500、600 mg/L초산란용액분시포규유묘협편작위처리,매천분시1차,련속3d.재20、5、12화10℃하분별처리24h후측정협편적병이철、가용성당화협록소함량이급협록소a/b적비치.결과표명:초산란용액처리적유묘병이철함량도비대조저,이차수온도변화폭도소,이가용성당화협록소함량급협록소a/b비치균비대조고.초산란처리가유효개선상술포규유묘적내한성생리지표,기중300 mg/L초산란용액대제고포규유묘적내한성생리지표구유현저적효응.
The effect of La(NO3)3 on the physiological indices of cold tolerance in Livistona chinensis seedlings was conducted,The L.chinensis seedlings were sprayed with 0,100,200,300,400,500,600 mg/L La(NO3)3solution,the contents of malondialdehyde (MDA),soluble sugar,chlorophyll and chlorophyll a/b ratio of L.chinensis seedrngs were determined under 20,5,12 and 10 ℃ for 24 h,respectively,The results of the MDA contents with La(NO3)3 treatments were lower than those of the control.and changed slowly under temperature stress,and the contents of soluble sugar,chlorophyll and chlorophyll a/b ratio increased compared with the control.It was concluded that La(NO3)3 agents could boost the physiological indices of cold tolerance in L.chinensis.And the appropriate concentration which significantly affected the physiological indices of cold tolerance was 300 mg/L.
