用不同的活力试验方法对两种牧草的种子质量进行分级并预测田间出苗率

IF 1.7 4区 农林科学 Q2 AGRONOMY
Venuste Munyaneza, Deming Li, Pan Jia, Xiaowen Hu
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引用次数: 1

摘要

种子活力测试方法的发展对于高质量的种子选择非常重要,从而确保高出苗率和在田间,特别是在恶劣环境下的均匀建立。采用标准萌发(SG)、水分和温度胁迫条件下萌发、胚根出苗(RE)计数、加速老化(AA)和电导率(EC)试验对嗜冷羊草(Poa crymila)和羊草(Elymus dahuricus)种子批活力进行了评价。绿僵菌(P. crymophilila)和达胡利菌(E. dahuricus)的羽化率分别为70 ~ 88%和81 ~ 97%,与田间羽化率无显著相关。嗜冷菌种子的EC与FE呈显著相关(r = -0.774, P < 0.05),达胡菇种子的EC与FE无显著相关(r = -0.774, P < 0.05)。播后144 h和108 h的RE计数分别与FE呈极显著相关。嗜冷菌在AA处理第1天和达胡利菌在AA处理第4天的发芽率与FE的关系最为密切。在-0.2 MPa和15°C条件下,嗜冷菌萌发率与田间出苗率也有一定的关系,达胡家蚕萌发率为0.0 MPa和20°C。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Various vigour test methods to rank seed lot quality and predict field emergence in two forage grasses
The development of seed vigour testing methods is important for high seed quality selection and, consequently, ensuring high seedling emergence and uniform establishment in the field, particularly in harsh environments. In this study, standard germination (SG), germination under water and temperature stress conditions, radicle emergence (RE) count, accelerated ageing (AA), and electrical conductivity (EC) tests were applied to evaluate the vigour of Poa crymophila and Elymus dahuricus seed lots. SG ranged from 70 to 88% for P. crymophila and 81 to 97% for E. dahuricus, with no significant correlation with field emergence (FE) for either species. EC was significantly correlated (r = -0.774, P < 0.05) with FE for P. crymophila seeds, but not for E. dahuricus. RE counts at 144 and 108 hours from sowing for P. crymophila and E. dahuricus, respectively, were significantly correlated with FE. Germination after one day of AA for P. crymophila and four days for E. dahuricus were more closely correlated with FE than other AA periods. Germination at -0.2 MPa and 15°C for P. crymophila, 0.0 MPa and 20°C for E. dahuricus also related to field emergence.
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来源期刊
Seed Science and Technology
Seed Science and Technology 农林科学-农艺学
CiteScore
3.00
自引率
28.60%
发文量
36
审稿时长
>36 weeks
期刊介绍: Seed Science and Technology (SST) is an international journal featuring original papers and articles on seed quality and physiology related to seed production, harvest, processing, sampling, storage, genetic conservation, habitat regeneration, distribution and testing. A journal that meets the needs of researchers, advisers and all those involved in the improvement and technical control of seed quality. Published every April, August and December.
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