【摘要】 以天然绿色棉品种皖棉39和棕色棉品种湘彩棉2号为材料,研究了叶面喷施氯化铁对天然彩色棉纤维色素固定的调节作用。结果表明,(1)喷施FeCl3能显著提高彩色棉纤维中色素光稳定性。绿色棉皖棉39光稳定性提高幅度大于湘杂棉2号。(2)喷施FeCl3处理纤维中的铁含量显著增加。吐絮时,皖棉39、湘彩棉2号纤维中铁含量分别为86.00、84.50mg.kg-1,分别比对照提高了21.47%、11.89%,说明天然彩色棉通过喷施FeCl3可以提高其纤维中铁含量。(3)相关分析表明,天然彩色棉吐絮期纤维中铁含量与阳光照射5h后纤维中色素溶液吸光度下降值呈极显著的负相关(r=-0.953**)。可见,叶面喷施氯化铁提高了天然彩色棉纤维中的铁含量,铁离子可以对纤维色素起固定作用,进而提高色素的稳定性。更多还原

【Abstract】 The study was undertaken on natural-colored cotton cultivars,which were Xiangcaimian 2 and Wanmian 39 at the Jiangsu Provincial Key Laboratory of Crops Genetic and Physiology,Yangzhou University,Yangzhou,China.In the experiment,the brown cotton cultivar(Xiangcaimian 2)and the green cotton cultivar(Wanmian 39)were grown and investigated to study the effect of spraying FeCl3 on the pigment fixation in the natural-colored cotton fiber.The results showed that spraying FeCl3 increased the pigment’s stability of the natural-colored cotton cultivars significantly,especially for Wanmian 39.In compared with each control,spraying FeCl3 increased the absorbency of the pigment solution for Wanmian 39 and Xiangcaimian 2 by 75.5% and 44.9% respectively after five hours in the radiation of sunlight.The results further revealed that spraying FeCl3 increased the iron concentration in the natural-colored cotton fiber.Compared to each control,the content of iron in the fiber increased for Wanmian 39 and Xiangcaimian 2 by 21.47% and 11.89% respectively.Significant correlation was found between the iron concentration and the declining amount of the pigment solution absorbency in sunlight(r=0.953,p<0.01).The experiment indicated that spraying FeCl3 can increase the iron concentration in the fiber for different natural-colored cotton to enhance the pigment’s stability.更多还原