【摘要】：采用瘺管羊瘤胃瘺管尼龍袋法,對(duì)北疆地區(qū)常見(jiàn)的28種禾本科植物種子進(jìn)行不同時(shí)間段的瘤胃消化處理,對(duì)處理前后種子的長(zhǎng)、寬、厚、形狀指數(shù)、百粒重和萌發(fā)率進(jìn)行了測(cè)量,研究種子對(duì)綿羊瘤胃消化的反應(yīng),以期豐富北疆地區(qū)植物種子消化道傳播的內(nèi)容.結(jié)果表明:除臭草、剪股穎、鱗莖早熟禾、貓尾草和小麥以外,其余23種植物的種子均為橢圓或扁平狀種子;小麥和燕麥種子百粒重分別為3.52和1.69 g,其余種子的百粒重均為0.01~1 g,屬中等或偏小類型.種子經(jīng)瘤胃消化后,顏色變深,種子結(jié)構(gòu)被破壞,種子的芒、稃和穎等附屬結(jié)構(gòu)的長(zhǎng)度隨消化時(shí)間的延長(zhǎng)逐漸減小;種子長(zhǎng)、寬、厚、百粒重隨消化時(shí)間的延長(zhǎng)呈逐漸減小趨勢(shì),但變化不顯著;種子經(jīng)綿羊瘤胃消化后,萌發(fā)率顯著降低,經(jīng)瘤胃消化6 h后,除鵝觀草和燕麥種子萌發(fā)率降為0外,其余26種植物仍有部分種子保持活力.
[Abstract]:By using rumen fistula nylon bag method, 28 species of Gramineae seeds were digested in different time periods in northern Xinjiang. The length, width, thickness and shape index of seeds before and after treatment were analyzed. The 100-seed weight and germination rate were measured to study the reaction of seeds to rumen digestion of sheep in order to enrich the content of plant seed digestive tract transmission in northern Xinjiang. The results showed that the seeds of the other 23 species were elliptical or flattened, except for deodorant, spikelet, POA pratensis, Caterpillar and wheat. The 100-grain weight of wheat and oat seeds were 3.52 and 1.69 g, respectively. After digested by rumen, the seed color became darker, the seed structure was destroyed, the length of seed Awns, Palea, glume and other subsidiary structures gradually decreased with the prolongation of digestion time, the seed length, width, thickness, The percentage of seed germination decreased significantly after digesting by rumen of sheep, and after digesting by rumen for 6 h, the germination rate of seeds of Roegneria and oats decreased to 0 except that of Roegneria and oat. Some of the remaining 26 species are still alive.
【作者單位】： 石河子大學(xué)動(dòng)物科技學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(31360568,31560659)資助~~
【分類號(hào)】：S54;S826
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本文編號(hào)：2272172