《植物生理学报》 2010, 46(7): 687-692

两种植物生长调节剂浸种对大豆根系解剖结构的影响

冯乃杰^1,2,3, 阎秀峰^1,*, 郑殿峰^3,*, 刘冰³

1 东北林业大学博士后科研流动站, 哈尔滨 150086; 2 大庆高新技术产业开发区博士后科研工作站, 黑龙江大庆 163316; 3 黑 龙江八一农垦大学农学院化控研究室, 黑龙江大庆 163319

通信作者：阎秀峰；E-mail: xfyan@nefu.edu.cn, zdffnj@263.net；Tel: 0451-82190015, 0459-6819175

摘　要：

在砂培框栽条件下, 研究植物生长调节剂2-N,N-二乙胺基乙基己酸酯(DTA-6)和烯效唑(S3307)浸种对大豆‘ 垦农4 号’根系生长的调控效应, 并比较不同浓度条件下2种植物生长调节剂对大豆根系的显微结构及超微结构的影响。结果表明, 50mg·L-1 DTA-6和0.4 mg·L-1 S3307浸种后中柱鞘直径、根系木质部及韧皮部截面积均增加, 线粒体及淀粉质体等结构清晰, 线粒体、淀粉质体、质体数量丰富; 而其他浸种处理对根细胞发育的上述指标的调控效果不显著。综合分析表明, 50 mg·L-1DTA-6 和0.4 mg·L-1 S3307 浸种有利于大豆根系的生长发育。

关键词：大豆根系; 植物生长调节剂; 解剖结构

收稿：2010-04-14   修定：2010-06-04

资助：国家科技支撑计划(2006BAD21B01)、国家教育部博士点基金联合资助项目(20070223002)、黑龙江省“ 十一五” 科技攻关项目(GA06B101-1-1)和黑龙江省博士后基金资助项目(LRB08-626)。

Effect of PGRs Seed Soaking on Anatomical Structure in Soybean Root

FENG Nai-Jie^1,2,3, YAN Xiu-Feng^1,*, ZHENG Dian-Feng^3,*, LIU Bing³

¹Postdoctoral Research Station, Northeast Forestry University, Harbin 150086, China; ²Postdoctoral Research Working Station of Daqing Hi Tech Industry Development Zone, Daqing, Heilongjiang 163316, China; ³Crop Regulation Laboratory, College of Agronomy, Heilongjiang August First Land Reclamation University, Daqing, Heilongjiang 163319, China

Corresponding author: YAN Xiu-Feng; E-mail: xfyan@nefu.edu.cn, zdffnj@263.net; Tel: 0451-82190015, 0459-6819175

Abstract:

In pot cultivation condition, the effects of seed soaking with two plant growth regulators, 2-diethylaminoethyl hexanoate (DTA-6) and uniconazole (S₃₃₀₇), were investigated on the root growth of soybean (Glycine max) cultivar ‘Kennong 4’. The effects of plant growth regulators on anatomical microstructure and ultrastructure in soybean root were also compared. The results showed that treatments with 50 mg·L^-1 DTA-6 or with 0.4 mg·L^-1 S₃₃₀₇ could increase diameter of pericycle, and sectional area of xylem and phloem. The structures of chondriosome and amyloplasts in cell were clear, and the numbers of chondriosome, amyloplasts and plastids were numerous. Other treatments did not have significant effects on these indexes. Detailed synthetic analyses suggested that 50 mg·L^-1 DTA-6 and 0.4 mg·L^-1 ₃₃₀₇ were beneficial to soybean root growth.

Key words: soybean root; plant growth regulator (PGR); anatomical structure