Physiological and Biochemical Changes in russian Wildryegrass Seed During Seed Deterioration

doi:10.11733/j.issn.1007-0435.2005.03.002

›› 2005, Vol. 13 ›› Issue (3): 180-183,189.DOI: 10.11733/j.issn.1007-0435.2005.03.002

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Physiological and Biochemical Changes in russian Wildryegrass Seed During Seed Deterioration

LI Yu-rong, HAN Jian-guo, SUN Yan, REN Wei-bo, WANG Xiao-shan

Institute of Grassland Science, CAU, Forage and Turfgrass Seed Testing Centre, Ministry of Agriculture, Beijing 100094, China

Received:2004-06-29 Revised:2005-01-18 Online:2005-08-15 Published:2005-08-15

新麦草种子劣变过程中生理生化变化

李玉荣, 韩建国, 孙彦, 任卫波, 王小山

中国农业大学草地研究所, 农业部牧草与草坪草种子质量监督检验测试中心, 北京, 100094

通讯作者: 韩建国,E-mail:grasslab@pblie3.bta.net.cn
作者简介:李玉荣(1969- ),内蒙古赤峰市人,博士研究生,研究方向为牧草种子、牧草育种与生物技术
基金资助:
农业部“948”重大项目(202099)资助;博士点基金(2000001906)资助

Abstract

Abstract: A study on the deterioration of in russian wildryegrass seed was conducted to analyze the phy-siological and biochemical changes occurring under natural or accelerated ageing conditions. The results showed that the seed germination percentage, germination index, dehydrogenase and acid phosphoesterase activity decreased in the process of ageing. Decrease of germination index ,and acid phosphoesterase activity sensitive parameters in assessing seed quality, happened earlier than that of germination percentage. Leaching of sugar increased with seed ageing, while the conductance of leachate was not correlated with the seed deterioration.

Key words: Russian wildryegrass seed, Seed deterioration, Physiological and biochemical change

摘要： 研究新麦草(Psathyrostachy sjuncea Bozoisky)种子在自然老化和人工老化过程中的生理生化变化。结果表明:在自然和人工老化过程中,种子发芽率、发芽指数、脱氢酶和酸性磷酸酯酶活性降低;发芽指数和酸性磷酸酯酶活性的变化先于发芽率,这是种子质量的敏感指标;种子可溶性糖泄漏随着老化程度的增加而增加;电导率与种子劣变程度的相关不显著。

关键词: 新麦草种子, 种子劣变, 生理生化变化

CLC Number:

S812
S330.2

LI Yu-rong, HAN Jian-guo, SUN Yan, REN Wei-bo, WANG Xiao-shan. Physiological and Biochemical Changes in russian Wildryegrass Seed During Seed Deterioration[J]. , 2005, 13(3): 180-183,189.

李玉荣, 韩建国, 孙彦, 任卫波, 王小山. 新麦草种子劣变过程中生理生化变化[J]. , 2005, 13(3): 180-183,189.

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Physiological and Biochemical Changes in russian Wildryegrass Seed During Seed Deterioration

新麦草种子劣变过程中生理生化变化

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[3]	Pu Xinchun, Han Jianguo, Mao Peisheng, Wang Pei. Effects of Accelerated Ageing on the Physiological and Biochemical Characters of Tall Fescue Seed [J]. , 1998, 6(3): 191-196.