绵羊瘤胃消化对豆科植物种子萌发以及成苗特性的影响

发布时间：2018-05-28 02:16

本文选题：豆科种子 + 瘤胃消化　；参考：《中国草地学报》2017年04期

【摘要】：以广布于巴尔鲁克山天然割草场的7种豆科植物种子为研究对象,采用尼龙袋法进行不同时间段的瘤胃消化,以期揭示这7种种子对绵羊瘤胃消化的反应。结果表明,7种种子的形状指数均小于0.1,为典型的圆形种子;除线叶野豌豆在消化72h后种皮仍没被消化外,其余6种种子的种皮均能被绵羊瘤胃所消化;除准噶尔岩黄芪和山地岩黄芪外,其他种子消化后的吸水率较消化前显著提高;萌发实验表明,除准噶尔岩黄芪随消化时间延长萌发率逐渐降低外,其余6种种子萌发率呈现先增加后降低的趋势,萌发高峰期集中在消化12~36h时间段内,且显著高于消化前的萌发率。随消化时间的延长,株高和根长均逐渐降低,但种子排放高峰期(29~36h)萌发所形成的幼苗的株高和根长与消化前相比差异均不显著。
[Abstract]:In order to reveal the reaction of 7 species of legumes seeds from Baruch Mountain natural mowing farm to sheep rumen digestibility, nylon bag method was used to digest the rumen at different time periods in order to reveal the reaction of these seven seeds to sheep rumen digestion. The results showed that the shape index of 7 seeds was less than 0.1, which was a typical round seed, and the seed coat of 6 species could be digested by sheep rumen, except for the seed coat that had not been digested after 72 hours of digestion. The water absorption rate of other seeds after digestion was significantly higher than that before digestion, except for Huangqi in Junggar Rock and Astragalus membranaceus in mountainous area, and the germination experiment showed that the germination rate of Astragalus membranaceus decreased with the increase of digestion time. The germination rate of the other six seeds increased at first and then decreased. The peak period of germination was in the period of 12 ~ 36h, which was significantly higher than that before digestion. The plant height and root length decreased gradually with the increase of digestion time, but there was no significant difference in plant height and root length between pre-digested and post-digested seedlings.
【作者单位】：石河子大学动物科技学院;
【基金】：国家自然科学基金(31360568;31560659)
【分类号】：S826.5

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