干旱区研究

干旱区研究 ›› 2014, Vol. 31 ›› Issue (2): 307-312.

• 植物与植物生理 • 上一篇    下一篇

保水剂包衣对柠条种子萌发及幼苗生长的影响

李加国，郎思睿，汪晓峰   

  1. （北京林业大学，北京 100083）
  • 收稿日期:2012-12-17 修回日期:2013-03-12 出版日期:2014-03-11 发布日期:2014-04-25
  • 作者简介:李加国(1987-)，男，在读硕士研究生，主要从事种子生物学研究. Email： lijiaguo2011@sina.com
  • 基金资助:

    国家林业公益性行业科研专项（201104024）；国家林业局引进国际先进农业科学技术计划（“948”项目，2011-4-54）

Effect of Super Absorbent Polymer Coating on Seed Germination and Seeding Growth of Caragana microphylla

  • Received:2012-12-17 Revised:2013-03-12 Published:2014-03-11 Online:2014-04-25

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摘要： 使用5种保水剂（A、B、C、D、E）做为添加剂，研究了在干旱条件下，5种保水剂丸化包衣对柠条种子萌发及幼苗生长的影响。结果表明：不同水分条件对柠条种子发芽率有显著影响，不同保水剂吸水倍数差异显著；保水剂可以显著提高种子的发芽率、发芽势、发芽指数、活力指数及幼苗生长量，促进程度与保水剂吸水倍数呈正相关；使用保水剂包衣后，萌发中种子的电导率、丙二醛（MDA）含量、过氧化氢（H2O2）含量、脯氨酸含量、过氧化物酶（POD）活性明显低于对照组。综合实验结果，5种保水剂包衣处理效果依次为: D>E>B>A>C。

Abstract: Five kinds of SAPs (A, B, C, D and E, 10% of seed weight) were used to coat [WTBX]Caragana microphylla[WTBZ] seeds, and 50 mL water was supplied every three days. Effects of five kinds of SAPs on seed germination and seedling growth of [WTBX]C. microphylla[WTBZ] under drought were studied. The results showed that the seed germination rate of [WTBX]C. microphylla[WTBZ] was affected significantly by water conditions, and the water absorbent capacities of different SAPs were significantly different. SAPs could be used to significantly improve the seed germination rate, germination potential, germination index, vigor index and seedling growth, and there was a positive correlation between the improving degree and the water absorbent capacity of SAPs. After coating [WTBX]C. microphylla[WTBZ] seeds with SAPs, the electrolytic leakage, MDA content, H2O2 content, proline content and POD activity of germinating seeds were significantly lower than those of control groups. The results of comprehensive test revealed that the effect of seed coating with the five kinds of SAPs was in an order of D>E>B>A>C.