河南农业科学 ›› 2023, Vol. 52 ›› Issue (3): 64-72.DOI: 10.15933/j.cnki.1004-3268.2023.03.007

• 作物栽培·遗传育种 • 上一篇    下一篇

IAA 对黄精种子萌发及生理特性的影响

岳贺伟,李连珍,王雨情,王溶溶,刘旸,魏俊杰,苌建峰
  

  1. (河南农业大学农学院,河南 郑州 450046)
  • 收稿日期:2022-11-11 出版日期:2023-03-15 发布日期:2023-04-14
  • 通讯作者: 苌建峰(1978-),男,河南巩义人,高级实验师,主要从事中药材栽培与资源开发利用研究。E-mail:changjianfeng@henau.edu.cn
  • 作者简介:岳贺伟(1995-),男,河南驻马店人,在读硕士研究生,研究方向:中药材栽培与资源开发利用。E-mail:18839793074@163.com
  • 基金资助:
    河南省高等学校青年骨干教师培养计划项目(2019GGJS045);河南省中药材产业科技特派员服务团项目(2022)

Effect of IAA on Seed Germination and Physiological Characteristics of Polygonatum sibiricum Red.

YUE Hewei,LI Lianzhen,WANG Yuqing,WANG Rongrong,LIU Yang,WEI Junjie,CHANG Jianfeng   

  1. (College of Agronomy,Henan Agricultural University,Zhengzhou 450046,China)
  • Received:2022-11-11 Published:2023-03-15 Online:2023-04-14

摘要: 为探究吲哚乙酸(IAA)对黄精种子萌发及生理特性的影响,采用50 mg/L(T1)、100 mg/L(T2)、200 mg/L(T3)3个质量浓度的IAA和蒸馏水(CK)对黄精种子进行处理,调查种子萌发及生长情况,测定黄精种子中过氧化物酶(POD)、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、脂肪酶活性及丙二醛(MDA)、脂肪、游离氨基酸、蛋白质、淀粉、可溶性糖含量变化情况。结果表明,黄精种子萌发率在第33天,T1、T2、T3分别比CK提高52.82%、174.98%、68.05%;种球直径、主根长和干质量均表现为T1、T2、T3显著高于CK,T2处理的种球侧根数、主根长和干质量均显著高于其他处理;POD、SOD和CAT活性均在处理后第22天达到最高,其中T1、T2和T3的POD活性分别比CK提高16.36%、30.12%、14.07%,SOD活性分别比CK提高16.36%、32.33%、9.79%,CAT活性分别比CK提高22.62%、63.43%、32.33%;MDA含量在整个种子萌发过程中各处理均表现为CK>T1>T3>T2;淀粉、可溶性糖、蛋白质、游离氨基酸含量在第22天达到最低,T2显著低于其他处理;脂肪含量在整个种子萌发过程中均表现为CK>T1>T3>T2;脂肪酶活性在第36天达到最高,T1、T2、T3分别比CK提高149.15%、175.42%、137.20%。主成分分析结果表明,淀粉含量、可溶性糖含量、游离氨基酸含量、蛋白质含量、POD活性、SOD活性、CAT活性和脂肪酶活性等8个指标可以作为反映黄精种子生长的特征指标。综上,IAA能够提高黄精种子萌发率、体内物质代谢水平和抗氧化酶活性,其中100 mg/L为IAA促进黄精种子萌发的最佳质量浓度。

关键词: 吲哚乙酸(IAA), 黄精, 种子萌发, 生理特性

Abstract: In order to explore the effect of indoleacetic acid(IAA)on the germination and physiological characteristics of Polygonatum sibiricum Red.seeds,50 mg/L(T1),100 mg/L(T2),200 mg/L(T3)IAA and distilled water(CK) were used to treat Polygonatum sibiricum Red.seeds,the germination and growth of the seeds were investigated,the activities of peroxidase(POD),superoxide dismutase(SOD),catalase(CAT),lipase and the content changes of malondialdehyde(MDA),fat,free amino acid,protein,starch and soluble sugar were determined in Polygonatum sibiricum Red.seeds.The results showed that the germination rates of Polygonatum sibiricum Red. seeds in T1,T2,T3 treatments were 52.82%,174.98% and 68.05% higher than CK on the 33rd day.Bulb diameter,main root length and dry mass were significantly higher in T1,T2,T3 than in CK,and the number of lateral roots,main root length and dry mass of T2 treatment were significantly higher than those of other treatments.The activities of POD,SOD and CAT reached the highest on the 22nd day after treatment.The activities of POD in T1,T2 andT3 were 16.36%,30.12% and 14.07% higher than CK,the activities of SOD were 16.36%,32.33%and 9.79% higher than CK,and the activities of CAT were 22.62%,63.43% and 32.33% higher than CK,respectively.MDA content during the entire seed germination process was CK>T1>T3>T2.The contents of starch,soluble sugar,protein and free amino acid were the lowest on the 22nd day,and T2 was significantly lower than other treatments. Fat content in each stage was CK>T1>T3>T2.The lipase activity reached the highest level on the 36th day,and T1,T2 and T3 were 149.15%,175.42% and 137.20% higher than CK respectively. Principal component analysis showed that starch content,soluble sugar content,free amino acid content,protein content,POD activity,SOD activity,CAT activity and lipase activity could be used as characteristic indicators to reflect the growth of Polygonatum sibiricum seeds.To sum up,IAA can improve the germination rate,substance metabolism level and antioxidant enzyme activity of Polygonatum sibiricum Red. seeds,and 100 mg/L is the best concentration to promote the germination of Polygonatum sibiricum Red.seeds.

Key words: Indoleacetic acid(IAA), Polygonatum sibiricum Red. , Seed germination, Physiological characteristics

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