六种粘液种子性状多样性及其对绵羊瘤胃消化的反应

发布时间：2018-04-10 22:36

本文选题：粘液种子 + 瘤胃消化　；参考：《草业学报》2017年04期

【摘要】：以条叶车前、伊犁绢蒿、涩芥、播娘蒿、异果芥和群心菜这6种粘液种子为研究材料,首先对其进行种子性状观测,然后将其置入永久性绵羊瘤胃瘘管内进行不同时间段的消化处理,并对处理前后的种子进行吸水率、粘沙率、粘液含量、萌发率等指标的测定,以期揭示这6种粘液种子对绵羊瘤胃消化的反应,并丰富有关植物种子消化道传播的内容。结果表明,这6种种子表层粘液物质都能被绵羊瘤胃液消化,且消化后的种子颜色变深。异果芥种子粘液构成其种翅附属结构,不同处理时间其宽度差异显著(P0.05),长和高差异均不显著(P0.05),而其他5种种子长、宽、高(厚)差异均不显著(P0.05)。粘液量随消化时间的增加而减少,且二者之间符合形如y=-1.98+48.26e~(-x/8.40)(R~2=0.95441,P=00.01)的指数函数关系,随粘液量的减少,种子吸水率和粘沙率也减少,且二者随消化时间的变化分别符合形如y=90.04+428.03e~(-x/4.43)(R~2=0.75934,P=00.01)和y=-0.71+342.76e~(-x/5.05)(R~2=0.81124,P=00.01)的指数函数关系。消化后的粘液种子萌发率显著降低(P0.05),可萌发种子集中在0~12 h处理时间段内,但仍有部分种子经消化道作用后成功"逃逸",这为草食动物对其进行消化道传播提供了可能。
[Abstract]:In this paper, six kinds of mucilage seeds, Artemisia yili, Artemisia acuminata, Artemisia vulgaris, Heteropodium heterocephala and Cymbidium chinensis, were used as the research materials, and their seed characters were observed at first.Then it was inserted into the rumen fistula of sheep for different time periods of digestion, and the water absorption, sand viscosity, mucus content and germination rate of seeds before and after treatment were measured.In order to reveal the reaction of these six kinds of mucus seeds to sheep rumen digestion and enrich the contents of plant seed alimentary tract transmission.The results showed that the surface mucus of the six seeds could be digested by sheep rumen fluid, and the color of the seeds became darker after digestion.The seed mucus of Heteropsis heterophyllum consisted of its wing satellite structure. The width of different treatments was significantly different (P0.05A), the length and height were not significantly different (P0.05A), while the other five kinds of seed length, width, height (thickness) were not significantly different (P0.05N).The amount of mucus decreased with the increase of digesting time, and the relationship between them was in accordance with the exponential function relation of yang-1.98 48.26e-1 ~ (-x / 8.40). The water absorption rate and sand adhesion rate of seeds also decreased with the decrease of mucus content.And the changes of the two with digestion time were in accordance with the exponential function relationship of yang 90.04 428.03e ~ (-x / 4.43) ~ (?) ~ (= 0.75934 ~ (4) P ~ (0.01)) and Yi-0.71 ~ (342.76) ~ (-x / 5. 05) ~ (?) ~ (0.81124N) P00.01), respectively.After digestion, the germination rate of mucus seeds decreased significantly, and the germinating seeds were concentrated in the period of 0 ~ 12 h treatment, but some of the seeds were "escaped" successfully after the action of digestive tract, which provided the possibility for herbivores to transmit them to the digestive tract.
【作者单位】：石河子大学动物科技学院;石河子大学信息科学与技术学院;
【基金】：国家自然科学基金(31360568,31560659)资助
【分类号】：S826.5

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