宁夏枸杞果实生长发育期内源激素变化及关系研究  

Endogenous Hormone Contents and Their Relationships with Fruit Development in Lycium barbarum L.

作　　者：杨晓婉[1] 郑国琦[2] 许兴[1] 胡美娟[1] 封美琦[1] 

机构地区：[1]宁夏大学农学院,银川750021 [2]宁夏大学生命科学学院,银川750021

出　　处：《西北植物学报》2013年第1期116-122,共7页Acta Botanica Boreali-Occidentalia Sinica

基　　金：国家自然科学基金项目(81160517)

摘　　要：以‘宁杞1号’枸杞为材料,采用高效液相色谱技术,对不同发育时期宁夏枸杞果皮和种子内源激素(ZT、GA3、IAA、ABA)含量进行测定,以揭示其变化规律。结果显示:(1)种子中的生长素与果实横径和果实单粒重均呈极显著的正相关关系,与果实纵径呈显著正相关关系,即种子中的生长素在果实的增大中起着重要的作用。(2)果皮和种子中的赤霉酸含量都远远大于其他3种激素含量,且从第一次快速生长期(花后2～8d)到缓慢生长期(花后8～25d),其含量与种子中的生长素含量变化较为一致,进入第二次快速增长期(花后25～33d)以后,果皮和种子中赤霉酸的含量则迅速下降,而种子中的生长素含量却急速上升,这可能是果皮和种子中的赤霉酸促进了种子内生长素的合成,而种子内的生长素可以直接调节果实细胞的伸长。研究表明,‘宁杞1号’种子中的内源激素在果实生长发育中起着重要的作用,且各激素间存在着平衡关系,果皮和种子中各种激素相互影响,共同促进果实的生长发育。Using HPLC technique,we studied the characteristics of the changes of the content of endogenous hormones（ZT,GA3,IAA,ABA） in Lycium barbarum L..The results showed that：（1）The correlation between the seeds＇ IAA contents and diameter and single fruit weight reached a significant positive correlation.The correlation between the seeds＇ IAA contents and length reached a positive correlation.It indicated that IAA in seeds played an important role during the fruit development.（2）The content of GA3 was the most in fruits and seeds.From the first rapid growth period（after flowering,2~8 d） to the slow growth phase（after flowering,8~25 d）,the changes of GA3 were similar to the changes of IAA in seeds;After the second period of rapid growth（after flowering,25~33 d）,the content of GA3 decreased rapidly.Otherwise,the content of IAA in seeds increased rapidly.The reason may be that GA3 promoted the synthesis of IAA of seeds,and then IAA in seeds can help the elongation of the fruit cell.These results also showed that the endogenous hormone in seeds played an important role during the fruit development in L.barbarum L..There was a dynamic balance relationship among every kinds of hormones.The different hormones in fruits and seeds worked together to help the fruit development of L.barbarum L..

关 键 词：宁夏枸杞 内源激素 果实生长发育 平衡 

分 类 号：Q945.65[生物学—植物学]