新型纤维在棉纺工业的应用

文章介绍了目前在棉纺工业中应用较成熟的几种新型纤维的性能特点和应用情况,概括总结了这些纤维的纺纱加工要点。     

对土家族棉花球发展演变的探讨

对土家族棉花球的发展演变及其特点等进行了分析、探讨，旨在弘扬民族传统体育，使棉花球这一民间传统体育游艺项目逐渐成为深受广大青少年喜爱的、极具推广性的集娱乐、健身于一体的竞技民族体育特色项目。     

A suppressed gene in integument cells of a fiberless seed mutant in upland cotton

A fiberless seed mutant (fl) was identified in a commercial cotton (Gossypium hirsutum L.) variety Xu-Zhou 142 (FL). This phenotype is associated with lack of fiber cell initiation in the outer integument of the ovule, as was characterized by analysis of genes related to fiber differentiation and development. Two genes, fl-E6 and FL-E6, were cloned from fl-integument cells and FL-fiber or integument cells, respectively. Compared with FL-E6, fl-E6 showed a dramatic change in nucleotide sequence: (1) FL-E6 contained a tandem repetitive sequence in which GGCTCA (Gly-Ser) is repeated five times between the 82nd and the 93rd codon from the first ATG codon, while in fl-E6 the same sequence is repeated four times; (2) The fl-E6 gene encodes a polypeptide of 241 amino acids but lacks two codons between the 90th and 93rd codon and three between the 171st and 174th relative to FL-E6; (3) There are also 12 nucleotide substitutions which would result in 7 amino acid differences between fl-E6 and FL-E6. Analysis of RT-PCR and Northerm Blot showed that expression of the fl-E6 gene is suppressed in the fl-integument cells, but highly expressed in FL-fiber cells. The difference between fl-E6 and FL-E6 may be associated with lower expression of fl-E6 in the fl-integument cells. Searches of protein databases with the FL-E6 gene sequence showed similarity to the protein backbones of two arabinogalactan-proteins (AGPs), one from the filtrate of suspension-cultured cells ofPyrus cornmunis (AGPPc2) and the other fromNicotiana alata (AGPNa2). Although the function of the FL-E6 protein in differentiation and development of cotton fiber cells is not known, the data indicate that the mutation of fl-E6 gene from FL-E6 gene may inhibit the fiber cell initiation from epidermal cells of the outer integument of the ovule. Project supported by the National Natural Science Foundation of China (Nos. 39770473 and 30170058), National Program of Plant Gene Transfer (J00-B-002-10), National High Technology Research and Development (863) Program of China (No. 2001AA212081), and Research Program of Ministry of Education of China (No. 0114)     

近代云贵区域棉纱市场分析

通过对近代云贵区域棉纱市场发育的分析,了解市场发育的经济环境及市场发育的进程,探讨推动区域市场一体化、实现区域经济协调发展的根本因素与途径。     

论中国纺织女神的祭祀礼俗及其影响

嫘祖和黄道婆是中国古代的两位纺织英雄，她们先后成为先蚕和先棉之神被祭祀，但两者在祭祀时间、规模、范围、方式等方面都有很大的区别。不同的祀典造成了不同的影响。对先蚕的祭祀，是对男耕女织的基本经济模式的强化，促进了男女二元对立的社会结构的形成。对先棉的祀奉是一种民间行为，促进了祭祀文化区的经济的繁荣，并与女性地位的提高有着一定关联。事实说明，祭祀既与某种生产方式相联系，也与某种社会结构相关联。     

甲硝唑棒治疗牙周炎的临床观察

为观察新剂型甲硝唑棒治疗牙周炎的临床疗效和药物不良反应 ,以甲硝唑棒为试验组与甲硝唑口服组进行对照比较 ,结果二组间综合疗效评估有效率无显著差异 ,显效率甲硝唑棒组高于对照组 ,而药物不良反应的发生率对照组明显大于试验组     

农科类应用型本科人才培养模式的改革策略——以棉花实验班为例

对棉花实验班在课程体系建设、“理论实践一体化”教学模式、师资队伍建设等方面进行改革与探索,构建应用型农科人才培养模式。棉花实验班四年的改革实践表明,通过建立专门管理机构,以理论教学为基础,实践教学为方法,以锻炼学生的实践能力为目标,实行“理论实践一体化”课程的应用,建立“理论实践一体化”教学体系,实现教学模式创新;加强校院、校企合作力度,形成多方协同育人机制;加强实践平台建设,培养学生具有更强的实践能力和创新能力;加强师资队伍建设,提升教师的教学水平和科研能力。总结了棉花实验班人才培养模式的改革措施,以期为农科类本科人才培养模式改革提供借鉴。     

新棉种SGK791产量构成因素分析及高产栽培主攻方向

利用2003-2004两年河南省棉花区试与2005年河南省棉花生产试验数据资料,应用偏相关和多元线性回归,分析了SGK791的皮棉产量及其构成因素的量化关系,并用通径分析将影响产量的四个因素（密度、单株成铃数、铃重、衣分）对产量的作用进行分析。结果表明：影响皮棉产量的四个因素对产量的综合作用排序为：每株铃数〉衣分〉单铃重〉密度。据此可知,SGK791高产栽培的关键是在合理密植的基础上,以力争株铃数为主攻方向。     

二氧化氯防治棉花枯萎病探讨

为探讨ClO2用于防治棉花枯萎病的效果，通过和市场上常用的杀菌剂多菌灵、甲基托布津进行田间对比试验，结果表明：采用添加1％～2％棉花专用添加剂的80ppm ClO2溶液，用灌根和喷雾相结合的办法，其平均死亡率可低达2．7％，而多菌灵、甲基托布津平均死亡率分别为19．3％和16．2％．可以看出，添加1％～2％的添加剂ClO2溶液防治效果明显优于多菌灵和甲基托布津．     

内源激素调控棉花纤维发育及品质的研究进展

棉纤维的发育受多种因素影响,近年来多项研究证实植物激素是纤维发育的关键调控因素,本文就植物激素对纤维发育各个时期及纤维品质的影响、激素相关基因的研究进展等方面进行了综述。