【摘要】 近年来,海水稻研究引起社会广泛关注。羊草作为耐盐碱乡土草种资源,尚未见羊草耐海水有关试验报道。本文选择S19和S11两份羊草种质,研究了不同海水浓度对种子萌发特性的影响,结果表明,羊草种子萌发率随海水浓度的增加而降低,萌发率与海水浓度呈明显负相关; S19比S11更耐受海水抑制;羊草胚根长度、第一片真叶长度均随海水浓度的增加而受到明显抑制,胚芽鞘所受抑制较小。这些结果对羊草种质资源的耐海水评价和新品种培育具有重要参考价值。更多还原

【Abstract】 In recent years,sea rice research has aroused widespread concern in society. Leymus chinensis as a salt-tolerant native grass species resource,there is no experimental report on the tolerance of Leymus chinensis to seawater. In this paper,two sheep grass germplasms,S19 and S11,were selected to study the effects of different seawater concentrations on seed germination characteristics. The following results were obtained: The germination rate of Leymus chinensis seeds decreased with the increase of seawater concentration,and the germination rate was significantly negatively correlated with seawater concentration. S19 is more resistant to seawater inhibition than S11. The length of radicle and the length of the first true leaf of Leymus chinensis were significantly inhibited with the increase of seawater concentration,and the inhibition of coleoptile was less. These results have important reference value for seawater evaluation and new variety cultivation of Leymus chinensis germplasm resources.更多还原