摘要
[目的]研究不同种类、不同生育时期水稻植株细胞壁化学组分变化规律。[方法]应用Van Soest法对普通栽培稻与东乡野生稻在不同生育时期的植株中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)、酸性洗涤木质素(ADL)等含量进行研究。[结果]NDF、ADF、ADL含量的平均值变化范围分别是55.63% ～71.70%、31.98% ～49.61%、2.68% ～5.71%,其中以蜡熟期的东乡野生稻各含量最高,以抽穗期的协青早B各含量最低。在同一生育时期,不同种类水稻的NDF、ADF含量(除抽穗期的NDF)有显著性差异(P<0.05),以东野的含量最高,秀水110其次,以协青早B含量最低。在同一种类水稻中,不同生育时期的水稻NDF、ADF含量差异均达到显著性水平(P<0.05),以抽穗期的含量最低,乳熟期其次,至蜡熟期含量达到最高峰。[结论]籼亚种水稻的NDF、ADF等含量比普通野生稻和粳亚种水稻低,具有一定的秸秆饲料利用价值。籼型水稻若能尽早收割,秸秆配合青贮发酵与酶解等技术可以作为牲畜的有效日粮。
[Objective] To study the chemic component of rice cell wall among different varieties and at different rice growth stages.[Method] The contents of neutral detergent fiber（NDF）,acid detergent fiber（ADF） and acid detergent lignin （ADL） of rice were analyzed by Van Soest Method.[Result] The contents of NDF,ADF and ADL varied from 55.63% to 71.70%,31.98% to 49.61% and 2.68% to 5.71% respectively,the highest content was gained in Dongxiang wide rice at dough stage,while the lowest content was obtained in rice heading stage of Xieqingzao B.In the same growth stage,the contents of NDF（except heading stage） and ADF were significantly（P0.05 or 0.01） difference among three varieties of rice,the highest content was Dongxiang wide rice,followed by Xiushui 110,and the lowest was Xieqingzao B.In the same variety rice,the content of NDF and ADF were significantly （P0.05 or 0.01） difference among three rice growth stages,the lowest contents was rice heading stage,followed by rice milk ripe stage,the highest was rice dough stage.[Conclusion] the NDF,ADF and other contents of indica rice were lower than that of ordinary wild rice and japonica rice,therefore,it owned a certain value in use of straw feed.If the indica rice could be harvest as earlier as possible,the rice straw together with silage fermentation and enzymatic hydrolysis could provide the effective diet for livestock.
基金
Supported by the Early Special Program for the National "973" Key Basic Researches (2002CCC00800)~~
