[关键词]
[摘要]
目的 研究道地产区阳春砂种子的品质及贮藏特性,为其种子贮藏及质量标准的研究与制定提供依据。方法 参照《农作物种子检验规程》,对道地产区9个不同居群阳春砂种子的品质(真实性、千粒重、含水量、生活力、发芽率)进行测定。结果 不同居群自然干燥的阳春砂种子千粒重为14.516~19.120 g;含水量为11.46 %~19.20 %;生活力为82.00 %~95.03 %,置4 ℃贮藏72 d后生活力为51.33 %~79.67 %。自然干燥的种子起初基本不萌发,置4 ℃贮藏1个月后种子开始萌发;3个月时有5个居群种子的发芽率达峰值,随后下降,至9个月时基本不萌发;贮藏6个月时,有4个居群种子的发芽率达峰值,随后下降,9个月时尚能保持较高的发芽率;经赤霉素低温浸种处理的阳春砂种子的发芽率高于常温浸种的种子(P < 0.05)。结论 阳春砂种子为短命种子;置4 ℃贮藏3~6个月时种子后熟,并保持较高的生活力;赤霉素低温浸种可显著提高种子的发芽率;不同居群间阳春种子的品质存在明显的差异。
[Key word]
[Abstract]
Objective To provide theoretical evidence for the seed storage and quality standard,an experiment was conducted to study the quality and the storage characteristics of the seeds of Amomum villosum Lour. from traditional producing areas. Methods With reference to Rules for Agricultural Seed Testing,the quality(including authenticity,one-thousand-grain weight,moisture content,viability,germination rate)of Amomum villosum Lour. seeds from 9 populations in traditional producing areas were measured. Results In different populations,one-thousand-grain weight of the seeds which were dried naturally was within the range of 14.516~19.120 g,the moisture content was 11.46 %~ 19.20 %,the viability was 82.00 % ~ 95.03 %,and the viability of the seeds which were stored at 4 ℃ for 72 d were 51.33 % ~ 79.67 %. Seeds dried naturally germinated scarcely at initial time,but began to germinate after stored at 4 ℃ for one month. The germination rate of seeds of five populations(JZK,BT,LTJK,ODGK,YNML) reached the peak after stored for 3 months,and then dropped. At storage time for 9 months,the germination of the seeds almost disappeared. The germination rate of seeds of four populations(SZJC,YNSD,CCPL,YNXP) reached the peak after storage for 6 months,and still stayed a high level over 9 months. The germination rate of seeds processed by cold gibberellin soaking was higher than that processed by common-temperature hormone soaking(P < 0.05). Conclusion The life span of Amomum villosum Lour. seeds is short. The seeds become ripening after stored at 4 ℃ for 3~6 months,and have a high viability. Cold gibberellin soaking can significantly improve the germination rate,and the quality of seeds varies obviously in different populations.
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[基金项目]
十二五国家科技支撑计划项目(2011BAI01B02)。