应用生态学报2017，Vol.28Issue(12)：3908-3916,9.DOI:10.13287/j.1001-9332.201712.007
28种禾本科植物种子形态学特征及其萌发对绵羊瘤胃消化的反应
Seed morphology and effects of sheep rumen digestion on seed germination of 28 Gramineae plants
摘要
Abstract
An experiment was undertaken to compare the morphological characteristics of seeds of 28 Gramineae plants which widely distributed in north Xinjiang and to study their digestion in the rumen of sheep.After determining their morphological characteristics including seed length,width,height,seed shape index,100-seed mass,and seed germination percentage,seeds were put into nylon bags and then placed in the rumen of sheep through a fistula.The bags were removed at different times to determine the morphological characteristics and seed germination rates.The results showed that 23 plant seeds were all elliptic or flat types except for Melica scabrosa,Agrostis matsumurae,Poa bulbosa,Phleum pratense and Triticum aestivum.100-seed mass of T.aestivum (3.25 g) and Avena sativa (1.69 g) were ＞ 1 g,and the 100-seed mass of the other seeds ranged from 0.01-1 g,indicating they were all medium or small type seeds.The color of seed coat was deepened,seed structure was destructed,and the lengths of seed appendages,i.e.,awn,lemma and glume were decreased with increasing digestion time.Seed length,width,height,100-seed mass were decreased with increasing digestion time,but the changes were not significant compared with the non-digested seeds.The seed germination percentages were extremely decreased after sheep rumen digestion.After 6 h of sheep rumen digestion,the germination rates of the seeds of R.kamoji and A.sativa were decreased to 0,and part of the seeds of other 26 plants still had some vigor.关键词
消化道传播/发芽率/禾本科种子/形态学/瘤胃消化Key words
endozoochorous dispersal/germination rate/ramineae seed/morphology/rumen digestion引用本文复制引用
王树林,彭峰,鲁为华,陈乙实,景鹏成..28种禾本科植物种子形态学特征及其萌发对绵羊瘤胃消化的反应[J].应用生态学报,2017,28(12):3908-3916,9.基金项目
本文由国家自然科学基金项目(31360568,31560659)资助 This work was supported by the National Natural Science Foundation(31360568,31560659) （31360568,31560659）
