The genetic control of fiber pigment color in naturally colored cotton was studied. The expression of brown and green fiber color was controlled by incompletely dominant single genes and incompletely dominant major ge...The genetic control of fiber pigment color in naturally colored cotton was studied. The expression of brown and green fiber color was controlled by incompletely dominant single genes and incompletely dominant major genes, respectively. Production and accumulation of the fiber pigment were related to special expression of enzymatic genes for pigment synthesis in fiber cells. At the stage of fiber lengthening, naturally colored cotton, like white cotton, appeared purely white. But when fiber cell walls entered the thickening stage, pigment appeared by degrees. When the fiber was completely matured (on boll dehiscence), the color reached its darkest level. After wetting process treatment, the hues of the fiber pigment changed in regular patterns. The hue circle for brown and green cotton changed in the opposite direction with wetting process treatment. In general, the treated cotton color and luster became dark and vivid, and this trend provided the possibility for enhancing the fiber quality by suitable environmental friendly finishing. The analysis showed that the color and luster of the cotton may be controlled by a series of pigments which show different chemical performance.展开更多
Cotton cultivars with brown （Xiangcaimian 2）, green （Wanmian 39） and white （Sumian 9） fiber were investigated to study fiber developmental characteristics of natural-colored cotton and the effect of hormones on ...Cotton cultivars with brown （Xiangcaimian 2）, green （Wanmian 39） and white （Sumian 9） fiber were investigated to study fiber developmental characteristics of natural-colored cotton and the effect of hormones on fiber quality at different stages after anthesis. Fiber lengths of both natural-colored cottons were lower than the white-fibered control, with brown-fibered cotton longer than green. Fiber strength, micronaire and maturation of natural-colored cotton were also lower than the control. The shorter fiber of the green cultivar was due to slower growth during 10 to 30 days post-anthesis （DPA）. Likewise, the lower fiber strength, micronaire and maturation of natured-colored cotton were also due to slower growth during this pivotal stage. Indole-3-acetic acid （IAA） content at 10 DPA, and abscisic acid （ABA） content at 30 to 40 DPA were lower in the fibers of the natural-colored than that of the white-fibered cotton. After applying 20 mg L-1 gibberellic acid （GA3）, the IAA content at 20 DPA in the brown and green-fibered cottons increased by 51.07 and 64.33%, fiber ABA content increased by 38.96 and 24.40%, and fiber length increased by 8.13 and 13.96%, respectively. Fiber strength, micronaire and maturation were also enhanced at boll opening stage. Those results suggest that the level of endogenous hormones affect fiber quality. Application of external hormones can increase hormone content in natural-colored cotton fiber, improving its quality.展开更多
选择天然棕色棉品种湘彩棉2号和绿色棉品种皖棉39,研究其纤维品质性状形成特点及激素调节作用。结果表明与常规白色陆地棉苏棉9号(对照)相比,2个彩色棉品种的纤维长度均较低,尤其皖棉39显著低于对照,主要是花后10～30d伸长速率明显下降...选择天然棕色棉品种湘彩棉2号和绿色棉品种皖棉39,研究其纤维品质性状形成特点及激素调节作用。结果表明与常规白色陆地棉苏棉9号(对照)相比,2个彩色棉品种的纤维长度均较低,尤其皖棉39显著低于对照,主要是花后10～30d伸长速率明显下降。两个不同彩色棉品种的纤维比强度、马克隆值和成熟度值均显著低于对照,且主要与各个品质指标形成关键期的增长率较慢有关。两个彩色棉品种10DPA(days post anthesis)和20DPA纤维中IAA含量,30DPA和40DPAABA含量均显著低于各自对照。应用20mgL-1GA3处理棉铃后,湘彩棉2号、皖棉3920DPA纤维中IAA含量分别比各自对照提高51.07%、64.33%;吐絮时纤维长度分别比各自对照增加8.13%、13.96%;应用20mgL-1ABA处理棉铃,40DPA纤维中ABA含量分别比各自对照提高38.96%、24.40%,纤维比强度、马克隆值和成熟度也显著增加,其中又以皖棉39增加幅度较大。说明天然彩色棉纤维内源激素IAA和ABA含量不足影响纤维品质性状的形成,而通过植物生长调节剂应用可调节内源激素含量,改善纤维品质,且调节效应因植物生长调节剂和品种不同而异。展开更多
基金This work was supported by Innovation and Utilization of Specially Good Germplasm Material of Naturally Colored Cotton of the“863”Plan,China(2001AA241089)Research on Breeding of New Variety for Naturally Colored Cotton and Its Further Utilization of Zhejiang Key Project of Science and Technology,China(991102310,010007024).
文摘The genetic control of fiber pigment color in naturally colored cotton was studied. The expression of brown and green fiber color was controlled by incompletely dominant single genes and incompletely dominant major genes, respectively. Production and accumulation of the fiber pigment were related to special expression of enzymatic genes for pigment synthesis in fiber cells. At the stage of fiber lengthening, naturally colored cotton, like white cotton, appeared purely white. But when fiber cell walls entered the thickening stage, pigment appeared by degrees. When the fiber was completely matured (on boll dehiscence), the color reached its darkest level. After wetting process treatment, the hues of the fiber pigment changed in regular patterns. The hue circle for brown and green cotton changed in the opposite direction with wetting process treatment. In general, the treated cotton color and luster became dark and vivid, and this trend provided the possibility for enhancing the fiber quality by suitable environmental friendly finishing. The analysis showed that the color and luster of the cotton may be controlled by a series of pigments which show different chemical performance.
基金the National Natural Science Foundation of China (31301263, 31171479, 31471435)a Project Founded by the Priority Academic Program Development of Jiangsu Higher Education Institutions+2 种基金the China Postdoctoral Science Foundation Grant (2016M591934)the Postdoctoral Science Foundation Grant in Jiangsu Province, China (1601116C)the Project #SXGC(2016)320 supported by the Three New Technology Foundation of Agriculture in Jiangsu Province, China
文摘Cotton cultivars with brown （Xiangcaimian 2）, green （Wanmian 39） and white （Sumian 9） fiber were investigated to study fiber developmental characteristics of natural-colored cotton and the effect of hormones on fiber quality at different stages after anthesis. Fiber lengths of both natural-colored cottons were lower than the white-fibered control, with brown-fibered cotton longer than green. Fiber strength, micronaire and maturation of natural-colored cotton were also lower than the control. The shorter fiber of the green cultivar was due to slower growth during 10 to 30 days post-anthesis （DPA）. Likewise, the lower fiber strength, micronaire and maturation of natured-colored cotton were also due to slower growth during this pivotal stage. Indole-3-acetic acid （IAA） content at 10 DPA, and abscisic acid （ABA） content at 30 to 40 DPA were lower in the fibers of the natural-colored than that of the white-fibered cotton. After applying 20 mg L-1 gibberellic acid （GA3）, the IAA content at 20 DPA in the brown and green-fibered cottons increased by 51.07 and 64.33%, fiber ABA content increased by 38.96 and 24.40%, and fiber length increased by 8.13 and 13.96%, respectively. Fiber strength, micronaire and maturation were also enhanced at boll opening stage. Those results suggest that the level of endogenous hormones affect fiber quality. Application of external hormones can increase hormone content in natural-colored cotton fiber, improving its quality.
文摘选择天然棕色棉品种湘彩棉2号和绿色棉品种皖棉39,研究其纤维品质性状形成特点及激素调节作用。结果表明与常规白色陆地棉苏棉9号(对照)相比,2个彩色棉品种的纤维长度均较低,尤其皖棉39显著低于对照,主要是花后10～30d伸长速率明显下降。两个不同彩色棉品种的纤维比强度、马克隆值和成熟度值均显著低于对照,且主要与各个品质指标形成关键期的增长率较慢有关。两个彩色棉品种10DPA(days post anthesis)和20DPA纤维中IAA含量,30DPA和40DPAABA含量均显著低于各自对照。应用20mgL-1GA3处理棉铃后,湘彩棉2号、皖棉3920DPA纤维中IAA含量分别比各自对照提高51.07%、64.33%;吐絮时纤维长度分别比各自对照增加8.13%、13.96%;应用20mgL-1ABA处理棉铃,40DPA纤维中ABA含量分别比各自对照提高38.96%、24.40%,纤维比强度、马克隆值和成熟度也显著增加,其中又以皖棉39增加幅度较大。说明天然彩色棉纤维内源激素IAA和ABA含量不足影响纤维品质性状的形成,而通过植物生长调节剂应用可调节内源激素含量,改善纤维品质,且调节效应因植物生长调节剂和品种不同而异。
