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国际种子检验协会(TSTA)每年出版3次《种子学和良种繁育》杂志。刊载内容有种子生产,样本选择、分析、加工和贮藏等种子学和良种繁育问题的科学文章。并及时发表种子分析的国际规则的变动。学者D.C.E.Wurr和J.R.Fcllows(大不列颠国立蔬菜作物科研站)的文章《莴苣种子的田间发芽率和生活力的测定》,研究结果表明,种子生活力取决于种子胚根和胚茎的长度。J.Smith,T.Welch,T·Little也同样获得种子生活力。根据他研究的,借助于估算胚根长度来测定种子生活力
The International Seed Testing Association (TSTA) publishes “Seed Science and Breeding” magazine three times a year. Published articles include seed production, sample selection, analysis, processing and storage of seed science and breeding of scientific articles. And promptly publish changes in the international rules of seed analysis. Scholar D.C.E.Wurr and J.R.Fcllows (British National CropScreen Research Station) article “Determination of germination rate and viability of lettuce seeds” showed that the viability of seeds depends on the length of seed radicle and embryo stem. J. Smith, T. Welch, T. Little also have access to seed vitality. According to his research, seed viability was determined by means of estimating radicle length