生境、温度及外源激素对花花柴花器官发育的影响  

Effects of Habitat,Temperature and Exogenous Hormones on the Organ Development of Karelinia caspia

作　　者：毕愿坤 李丽 朱传应 王彦芹[1,2] BI Yuan-kun;LI Li;ZHU Chuan-ying;WANG Yan-qin(College of Life Sciences,Tarim University,Alar 843300;Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin,Xinjiang Production&Construction Corps,Alar 843300)

机构地区：[1]塔里木大学生命科学学院,阿拉尔843300 [2]塔里木盆地生物资源保护利用兵团重点实验室,阿拉尔843300

出　　处：《生物技术通报》2021年第4期28-34,共7页Biotechnology Bulletin

基　　金：国家自然科学基金项目(31660085,31460071);塔里木大学研究生创新项目(TDGRI201906,TDGRI201809)。

摘　　要：植物花器官的生长发育与温度密切相关,高温会导致花器官畸形及体内激素含量的变化。为探究不同生境配合外施生长素(IAA)对花花柴(Karelinia caspia)花器官发育的影响,测定沙漠和人工绿地2种环境下及外施不同浓度生长素(IAA)的花花柴花器官大小(雌花花柱、雄花花丝)及花器官内激素含量的变化。结果表明,在花苞期合适的温度(27-30℃)能够促进花花柴花器官的生长,而在开花过程中,高温(38-40℃)可促进花花柴柱头伸长进而影响花器官生长,直至发育成熟。外施一定浓度的IAA对花花柴花器官的生长具有促进作用,沙漠环境中,外施0.3 μmol/L的IAA促进作用最明显而人工绿地则为0.1 μmol/L。The growth and development of flower organs in plants are closely related to temperature,and high temperature can cause flower organs abnormal and changes in hormone content in the plant.To explore the effects of different habitats and exogenous IAA on the floral organ development of Karelinia caspia,the floral organ size of K.caspia(Female style and male filaments)under 2 habitats of desert and artificial green space and at different concentrations of IAA as well as the changes of hormone content in the floral organ were measured.Results showed that the appropriate temperature(27-30℃)promoted the growth of K.caspia flowering organs in the bud stage,while the high temperature(38-40℃)promoted the elongation of K.caspia stigma during flowering,thus affecting the growth of flower organs until maturity.External application of IAA at a certain concentration promoted the growth of K.caspia flower organs.In the desert,the IAA promotion effect of 0.3μmol/L was the most obvious,while that in the artificial green space was 0.1μmol/L.

关 键 词：高温胁迫 花花柴 外源激素 

分 类 号：Q945.78[生物学—植物学]