四川农业大学学报 ›› 2021, Vol. 39 ›› Issue (5): 596-603.doi: 10.16036/j.issn.1000-2650.2021.05.005

• 林学 • 上一篇    下一篇

柚木种子吸水及生活力对不同溶液浸种的响应

张合瑶, 朱存福*, 李莲芳*, 沈松, 郑川玲, 顾梦, 文国卫, 王帅, 朱庆伟   

  1. 西南林业大学林学院,昆明 650224
  • 收稿日期:2020-11-03 出版日期:2021-10-30 发布日期:2021-11-01
  • 通讯作者: *朱存福,硕士,讲师,主要从事方向为森林培育研究,E-mail:83446814@qq.com;李莲芳,博士,教授,博士生导师,主要从事方向为森林培育和林木育种研究,E-mail:llianf@126.com。
  • 作者简介:张合瑶,硕士研究生。
  • 基金资助:
    国家“十三五”重点研发计划(2016YFD0600602-2)

Response of Water Absorption and Viability of Teak Seeds to Soaking with Water Involved NaOH and GA3

ZHANG Heyao, ZHU Cunfu*, LI Lianfang*, SHEN Song, ZHENG Chuanling, GU Meng, WEN Guowei, WANG Shuai, ZHU Qingwei   

  1. College of Forestry,Southwest Forestry University,Kunming 650224,China
  • Received:2020-11-03 Online:2021-10-30 Published:2021-11-01

摘要: 【目的】 为了解清水(自来水)、不同浓度NaOH和GA3溶液浸种组合,以及GA3溶液于不同温度和时间浸种组合对柚木种实及种子吸水和生活力的影响,丰富柚木种实处理的资料,为进一步的试验研究和生产实践提供参考。【方法】 采用单因素(清水-自来水浸种时间),以及L8(27)(不同浓度NaOH和GA3溶液浸种)和L9(34)正交(不同浓度GA3溶液于不同温度和时间条件下浸种)设计开展柚木种实浸种和种子生活力测定的试验。【结果】 清水浸种2 h的种实吸水率达38.5%,之后吸水率极显著加速,18 h后缓慢吸水,至24 h时,达饱和吸水量。NaOH和GA3浸种的种子吸水率和生活力分别为20.9%~35.9%和41.3%~65.3%,处理组合间,此2指标呈现显著或极显著的差异影响(P<0.05或P<0.01);NaOH溶液浓度及其与浸种时间的交互作用是影响种子吸水的主导因子,NaOH溶液浓度是影响生活力的主导因子。GA3溶液于不同温度和时间浸种的种实吸水率和种子生活力分别为72.1%~108.3%和1.0%~43.3%,处理组合间,此两指标均呈现极显著的差异影响(P<0.01);GA3溶液浓度及其与浸种时间的交互作用是影响种实吸水的主导因子,影响生活力的则是浸种温度。【结论】 试验结果与普遍认为柚木种子吸水困难的结论相悖;NaOH和GA3浸种促进种子吸水,但相对高浓度NaOH溶液长时间浸种,降低种子生活力。0.1 g/L GA3于35 ℃ 恒温下浸种16 h的生活力最高,35 ℃可作为柚木种子浸种的适宜温度。

关键词: 柚木, 正交试验, 种实, 种子, 浸种, 吸水, 生活力

Abstract: 【Objective】 The purpose of the experiments is to understand effects of fruits soaked comninations (FSCs) consisted of water (tap water), different NaOH and GA3 concentrations solution, involved the FSCs of GA3 solution at different temperatures and time durations on water absorption and seed viability of teak (Tectona grandis) fruits and seeds, with to enrich the imformaation of teak seed treatment, and provide references for further experimental research and production practice. 【Method】 Single factor (clear water-soaking time durations in tap water), L8(27) (soaking fruits with different concentration solutions of the NaOH and GA3) and L9 (34) (soaking fruits with different GA3 concentration solutions at different temperatures and time durations) orthogonal design were employed to implement experiments of teak fruit soaking and seed-vitality measurement. 【Result】 The water absorption percent of fruits was 38.5% after 2 hours of soaking with clear water, and then the water absorption of the fruit was significantly accelerated. The water absorption was slowly down after 18 hours and reached the saturated water absorption capacity at the 24 hours of fruit soaked. The water absorption percents and viability of treatment combinations (TCs) which seeds soaked in NaOH and GA3 solutions were 20.9%-35.9% and 41.3%-65.3%, respectively, involved significant differences of which between the TCs (P<0.05 or P<0.01). The interaction between NaOH solution concentration and it soaking time duration for the experiment of the NaOH and GA3 solution soaking fruits was the dominant factor affecting seed water absorption, while the concentration of NaOH solution affecting the seed vitality. The water absorption percents of the fruit and seed viability of the TCs under the GA3 solution soaking fruit at different temperatures and time durations were 72.1%-108.3% and 1.0%-43.3%, respectively, with the two parameters showed significant difference between the TCs (P<0.01). The interaction between GA3 solution concentration and it soaking time duration for the experiment of the GA3 solutions soaking fruits at different temperatures and time durations was the dominant factor affecting water absorption of the fruits, while the fruit soaked at different temperatures affecting the seed vitality. 【Conclusion】 The experiment results are contrary to the conclusion that common considered which teak seeds are difficult to absorb water;fruits soaked with the NaOH and GA3 solution facilitated water absorption of seeds, but soaking fruits with high concentration of the NaOH solutions for a long time duration decreased seed viability. Soaking time of 16 hours at 35 ℃ with 0.1 g/L GA3 had the highest seed viability, and 35 ℃ could be the suitable temperature for fruit soaked of the teak.

Key words: Tectona grandis, orthogonal experiment, fruits, seeds, soaking seed, water absorption, viability

中图分类号: 

  • S796