Effects of space mutation on seed germination and seedling growth of four forage species

doi:10.6048/j.issn.1001-4330.2025.08.004

Xinjiang Agricultural Sciences ›› 2025, Vol. 62 ›› Issue (8): 1855-1861.DOI: 10.6048/j.issn.1001-4330.2025.08.004

• Crop Genetics and Breading·Molecular Genetics·Physiology and Biochemistry • Previous Articles Next Articles

Effects of space mutation on seed germination and seedling growth of four forage species

LI Youzheng¹, SUN Zongjiu¹, KE Mei², ZHENG Wenxin¹, LAN Jiyong², HOU Yurong², XU Xuejiao², WEI Peng²

1. College of Grassland Science, Xinjiang Agricultural University, Urumqi 830052, China;
2. Institute of Grassland Science, Xinjiang Uygur Autonomous Region Academy of Animal Husbandry Sciences, Urumqi 830057, China

Received:2024-12-30 Published:2025-12-06
Supported by:
The Tianshan Talent Training Program of Xinjiang Uygur Autonomous Region "Three Rural Backbone" Talent Training Project （2022SNGGNT096）; The Basic Scientific R &D Program of Public Welfare Research Institutions of Xinjiang Uygur Autonomous Region, "Research on the Response Mechanism of Chenopodium Heart-Leaf Seedlings Root System to Drought Stress" （KY2023059）

航天诱变对4种牧草种子萌发及幼苗生长的影响

李有政¹, 孙宗玖¹, 柯梅², 郑文新¹, 兰吉勇², 侯钰荣², 徐雪娇², 魏鹏²

1. 新疆农业大学草业学院, 乌鲁木齐, 830052;
2. 新疆维吾尔自治区畜牧科学院草业研究所, 乌鲁木齐, 830057

通讯作者: 魏鹏（1989-），男，副研究员，博士，研究方向为抗逆牧草育种与利用培育，（E-mail）xkyweipeng@163.com;孙宗玖（1975-），男，教授，博士，研究方向为草地培育、放牧管理及草坪资源评价，（E-mail）nmszj@21cn.com
作者简介:李有政（1997—），男，山东泰安人，在读硕士研究生，研究方向为抗逆牧草新品种选育，（E-mail）lyzheng7@163.com
基金资助:
新疆维吾尔自治区天山英才培养计划“三农骨干”人才培养项目（2022SNGGNT096）；新疆维吾尔自治区公益性科研院所基本科研业务经费资助项目“心叶驼绒藜幼苗根系对干旱胁迫的响应机制研究”（KY2023059）

Abstract

Abstract: 【Objective】To examine whether the germination characteristics of forage seeds change after undergoing spaceflight-induced mutation in the of providing foundational data for research on seed germination and seedling growth characteristics.【Methods】Four types of forage seeds carried on the Shenzhou XIV spacecraft, Alhagi camelorum, Seriphidium transiliense, Krascheninnikovia eversmanniana, and Sorghum sudanense var. Xincao No.1, were subjected to germination tests using the filter paper method. The germination rate, germination potential, seedling root length, seedling shoot length, and vitality index were measured and statistically analyzed.【Results】Compared to the unmutated control seeds（CK）, the germination rate and index of Krascheninnikovia eversmanniana significantly decreased by 70.00% and 67.36%, respectively, while the rootto-shoot ratio significantly increased by 10.00%（P<0.001）. After spaceflight-induced mutation, he germination index of Artemisia yili decreased significantly by 27.36%，and the root-to-shoot ratio of Seriphidium transiliense significantly increased by 242.00%（P<0.001）, with no significant changes in other indicators. Alhagi camelorum showed improvements in germination rate, germination potential, germination index, root-to-shoot ratio, and fresh weight, though the differences were not significant. Post-mutation, Sorghum sudanense var. Xincao No.1 showed an increase in all measures except for a 31.00% decrease in the root-to-shoot ratio, with no significant changes otherwise.【Conclusion】The germination characteristics of the seeds have changed after spaceflight-induced mutation, significantly affecting germination.

Key words: space mutation; germination; seed vitality; forage

摘要： 【目的】检验牧草种子经过航天诱变后其萌发特性是否发生变化，为开展种子萌发和幼苗生长特性研究提供基础数据。【方法】以搭载神舟十四号飞船的骆驼刺（Alhagi camelorum）、伊犁绢蒿（Seriphidium transiliense）、心叶驼绒藜（Krascheninnikovia eversmanniana）和新草1号苏丹草（Sorghum sudanense var. Xincao No.1）4种牧草种子为对象，采用滤纸发芽法对诱变后牧草种子的发芽率、发芽势、幼苗根长、幼苗芽长、活力指数进行测定与统计分析。【结果】与未经诱变的种子（CK）相比，航天诱变后心叶驼绒藜发芽率、发芽指数分别降低了 56.00%、67.36%，根芽比提高了 10.00%（P<0.001）；航天诱变后伊犁绢蒿发芽指数大幅下降，降低了27.36%，根芽比极显著提高了242.00%（P<0.001），其余指标无显著变化；航天诱变后骆驼刺发芽率、发芽势、发芽指数、根芽比及鲜重均有提高，但差异不显著；航天诱变后新草1号苏丹草除根芽比降低了31.00%外，其余指标均有提升，但不显著。【结论】航天诱变种子的萌发特性发生变化，且对萌发产生了一定影响。

关键词: 航天诱变, 种子萌发, 幼苗生长, 牧草

CLC Number:

LI Youzheng, SUN Zongjiu, KE Mei, ZHENG Wenxin, LAN Jiyong, HOU Yurong, XU Xuejiao, WEI Peng. Effects of space mutation on seed germination and seedling growth of four forage species[J]. Xinjiang Agricultural Sciences, 2025, 62(8): 1855-1861.

李有政, 孙宗玖, 柯梅, 郑文新, 兰吉勇, 侯钰荣, 徐雪娇, 魏鹏. 航天诱变对4种牧草种子萌发及幼苗生长的影响[J]. 新疆农业科学, 2025, 62(8): 1855-1861.

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Effects of space mutation on seed germination and seedling growth of four forage species

航天诱变对4种牧草种子萌发及幼苗生长的影响

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