外源激素处理对高加索三叶草根蘗芽生长发育的影响

打开文本图片集

中图分类号：S541.2 文献标识码：A 文章编号：1007-0435（2026）03-0929-11

引用格式：，等.外源激素处理对高加索三叶草根蘖芽生长发育的影响[J].草地学报，2026，34（3）：929 -939 YANG Ming-hao，LONG Xi，Yan Xu，et al.Effects of Exogenous Hormone Treatment on the Growth and Develop ment of Rihzome of Caucasian Clover[J].Acta Agrestia Sinica，2O26，34（3） ：929-939

Abstract： Plant hormones play important regulatory roles in crop growth，but the relationship and mechanism by which exogenous hormones induce the growth and development of Caucasian clover root tillers are stil unclear.In this study，the effcts of indole acetic acid（IAA），cytokinin（CTK）and kinetin（KT）on the growth and development，endogenous hormone content and expresion of related genes in Caucasian clover root tillers were compared. The results showed when the concentration of IAA was 8.0mg-1L-1 ，exogenous IAA treatment had the strongest effect on the growth of Caucasian clover root tilers.And when CTK concentration was 100.0mg⋅L-1 ，exogenous CTK treatment had the strongest inhibitory efect on the growth of Caucasian clover. Exogenous KT treatment had the greatest effect on the growth of Caucasian clover root tilers while KT concentration was 0.5mg∙L-1 . Compared with the control group，exogenous hormone treatment had a significant effect on BRII ， AP2/ERF ，KNOX， MAPK gene family， PAL ， POD and other related genes. In conclu sion， 8.0mg-1L-1 IAA and 0.5mg⋅L-1KT work best. This study provides a practical guidance for the artificial propagation and rapid grassland planting of Caucasian clover.

Key words：Caucasian clover;Plant hormone;Complex hormone;Gene family

高加索三叶草（Trifoliumambiguum）为多年生根蘖型豆科植物，是优良的放牧型牧草，无论是单播还是混播均具有较高的产量和饲用价值，可通过发达的地下根蘖进行克隆繁殖。（剩余16418字）