草地学报

›› 2005, Vol. 13 ›› Issue (1): 23-26.DOI: 10.11733/j.issn.1007-0435.2005.01.006

• 研究论文 • 上一篇    下一篇

柱花草种子超干保存效果及其对膜系统的影响

邹冬梅   

  1. 中国热带农业科学院热带作物品种资源研究所, 海南, 儋州, 571737
  • 收稿日期:2003-11-27 修回日期:2004-08-30 出版日期:2005-02-15 发布日期:2005-02-15
  • 作者简介:邹冬梅(1971- ),女,湖南祁东人,农艺师,主要从事热带作物研究,已发表论文10余篇
  • 基金资助:
    中国热带农业科学院科技基金(No.RYKJ0215)

Ultra-Dried Stylosanthes Seed Preservation and Its Effect to the Seed Biomemberane System

ZOU Dong-mei   

  1. Institute of Tropical Crop Germplasm Resources, Chinese Academy of Tropical Agriculture Sciences, Danzhou, Hainan Province 571737, China
  • Received:2003-11-27 Revised:2004-08-30 Online:2005-02-15 Published:2005-02-15

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摘要： 超干处理的柱花草(Stylosanthes guianensis)种子直接吸胀会引起种子活力特别是活力指数下降.吸胀前回湿处理可以减轻吸胀过程所造成的损伤.在含水量不低于3.17%时,超干处理对种子的发芽势、发芽率、发芽指数和活力指数没有影响;其最适含水量不低于3%,超干种子的抗老化能力增强.对超干种子电导率、离子渗漏和脱氢酶活性研究结果表明,回湿处理是保证超干种子活力的关键因素,利用超干技术贮存柱花草种子是可行的.

关键词: 柱花草, 种子, 超干保存, 膜系统

Abstract: Applying re-humidification treatment to ultra-dried seed of stylosanthes guianenesis cv. Reyan No.5 before seed imbibition could mitigate damage to the seed biomembrance system during the imbibing process. Otherwise, the imbibition would deplete the seed vigour, more particularly, the vigour index. When the seed contains 3.17% moisture, the ultra-drying treatment preserves well the seed vigour, germination viability and percentage. The optimum seed moisture content should be higher than 3%, which increases the seed aging resistibility. A study of the eletrical conductivity, ions leakage, and dehydrogenase activity of the ultra-dried Stylosanthes seed reveals that a key factor guaranteeing the vigour of the ultra-dried seed is by re-humidification treatment, and a feasible measure to store the seed is by ultra-drying technique.

Key words: Stylosanthes guianenesis, Seed, Ultra-dried storage, Biomembrane

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