摘要
利用"实践八号"返回式育种卫星搭载野生羊草种子,研究了卫星搭载羊草SP1生育期、株高、叶长等形态学特征的变化和SP2突变类型、突变率和主要突变性状等,探讨卫星搭载羊草的诱变效应及主要性状变异特性,以期为我国羊草航天育种研究提供理论依据。结果表明,卫星搭载对羊草SP1生育期、株高和叶片长度影响不大,而叶片宽度、结实率、穗长和千粒重明显高于对照(P<0.05)。羊草SP2出现多种性状变异,包括株高、熟期、结实率、发芽率、粗蛋白含量等性状。个别单株聚合了多个优良性状的变异,可作为今后育种重要材料。
Space mutation breeding is increasingly recognized as an important and popular technique in forage breeding. In order to provide theoretical basis for spaceflight mutation breeding of Leymus chinensis, mutagenic effects of SP1 generation and mutant characteristics of SP2 generation of dried seeds of L. chinensis embarked by recoverable Shijian No. 8 satellite were examined in this study. The results showed that growth stages, plant height and leaf length of SPI generation of embarked L. chinensis seeds did not varied, compared with the controls,, but leaf width, seed-setting percentage, spike length and thousand seed weight significantly increased （P 〈 0.05）. Mutant traits of SP2 generation of embarked L. chinensis seeds differently changed, with significant alterations in plant height and maturation time and slight changes in seed-setting percentage, germination rate, and crude protein. Thus, these individuals that have good mutant variations can be used as important breeding materials in the future.
出处
《核农学报》
CAS
CSCD
北大核心
2015年第7期1233-1238,共6页
Journal of Nuclear Agricultural Sciences
基金
国家国际科技合作项目-保障中国粮食安全的农作物品种改良合作计划(2011DFR30840-11)
关键词
羊草
卫星搭载
诱变
形态特征
变异
Leymus chinensis, space flight, mutation, morphological characteristic, variation
作者简介
潘多锋，男，助理研究员，主要从事牧草诱变育种和草地生态方面研究。E-mail：panduofeng2000@163．com
通讯作者：申忠宝，男，研究员，主要从事牧草育种方面研究。E-mail：shzhba02@126．com
