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作物学报 ›› 2011, Vol. 37 ›› Issue (07): 1280-1288.doi: 10.3724/SP.J.1006.2011.01280

• 耕作栽培·生理生化 • 上一篇    下一篇

彩色棉纤维分化及色素沉积过程观察

张美玲,宋宪亮,孙学振,王振林*,赵庆龙,李宗泰,姬红,许晓龙   

  1. 山东农业大学农学院 / 作物生物学国家重点实验室, 山东泰安271018
  • 收稿日期:2010-11-17 修回日期:2011-03-06 出版日期:2011-07-12 网络出版日期:2011-04-12
  • 通讯作者: 孙学振, E-mail: sunxz@sdau.edu.cn, Tel: 0538-8242487; 王振林, E-mail: zlwang@sdau.edu.cn, Tel: 0538-8241359
  • 基金资助:

    本研究由国家“十一五”科技支撑计划及产业化项目(2006BAD10B07), 山东省农业重大应用技术创新项目(2009, 2010), 山东省农业良种工程重大课题(2008 LZ03, 2009LZ03, 2010LZ005), 国家转基因生物新品种培育重大专项(2009ZX08005-010B-2)和作物生物学国家重点实验室开放课题资助。

Observation of Differentiation and Pigment Deposition Process in Colored Cotton Fibers

ZHANG Mei-Ling,SONG Xian-Liang,SUN Xue-Zhen*,WANG Zhen-Lin*,ZHAO Qing-Long,LI Zong-Tai,JI Hong,XU Xiao-Long   

  1. Agronomy College, Shandong Agricultural University / State Key Laboratory of Crop Biology, Tai’an 271018, China
  • Received:2010-11-17 Revised:2011-03-06 Published:2011-07-12 Published online:2011-04-12
  • Contact: 孙学振, E-mail: sunxz@sdau.edu.cn, Tel: 0538-8242487; 王振林, E-mail: zlwang@sdau.edu.cn, Tel: 0538-8241359

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被引次数

12

摘要： 以棕絮1号、陇绿棉2号和对照品种普通白色棉鲁棉研28为试验材料，利用光学显微镜、扫描电子显微镜和透射电子显微镜，观察彩色棉胚珠表皮细胞的形态变化、纤维的早期发育及色素沉积过程，旨在明确彩色棉与普通白色棉的纤维分化发育差异及彩色棉纤维色素的沉积过程。结果表明：各供试材料胚珠中部的部分表皮细胞均于开花前1 d开始分化；开花当天，胚珠纤维细胞均有突起；开花后1 d，纤维细胞突起增多，体积增大，其中鲁棉研28的纤维细胞已有伸长的态势；开花后3 d，纤维细胞均已伸长。除分化程度在各供试材料间差异不显著外，突起数量、发育和伸长程度，均以鲁棉研28最优，棕絮1号次之，陇绿棉2号最差。在纤维发育过程中，棕絮1号与陇绿棉2号纤维色素的形成时间及在纤维内的沉积部位均存在差异。陇绿棉2号的纤维色素形成时间较棕絮1号早，且沉积于纤维中腔和次生壁内层，而棕絮1号仅沉积在纤维中腔内。上述结果表明棕絮1号和陇绿棉2号的纤维品质差，可能与彩色棉纤维早期发育过程中，胚珠表皮细胞的突起时间相对较迟、数量相对较少和色素在纤维中沉积密切相关。

关键词: 彩色棉, 棉纤维, 分化突起, 色素沉积

Abstract: To further know the differentiation differencesand the process of pigment deposition between colored cotton fibers and normal white cotton fibers as well as in colored cotton fibers, morphological changes of ovule epidermal cells, fibers early development, and the process of pigment deposition were investigated inthree cotton (Gossypium hirsutum L.) cultivars (colored cotton Zongxu 1 (ZX1), Longlümian 2 (G-7), and white cotton Lumianyan 28 (LMY28)) using optical microscopy, scanning electron microscopy and transmission electron microscopy. The results showed that the central part of the ovule epidermal cells was began to differentiate at –1 DPA (days post anthesis, DPA). There were protuberances of ovule fiber cells at 0 DPA. The number and volume of protuberances increased at 1 DPA, when the fiber cells of LMY28 had the elongated trends. In addition, fiber cells already elongated at 3 DPA.In summary, it showed that LMY28 was the best, followed by ZX-1, and G-7 was the worst in the degree of differentiation, the number of protuberance, as well as, the level of development and elongation. Pigment forming time and depositing position showed signification differences in the fibers development process of ZX-1 and G-7’s. That is to say, the pigment formation of G-7 is earlier than that of ZX-1, and the pigment of G-7 deposited in both lumen and the inner secondary wall, while the pigment of ZX-1 only deposited in lumen. In conclusion, the poor quality of ZX-1 and G-7 is probably in relation to the later differentiation processes, the smaller numbers of ovule epidermal cells, as well as pigment deposited in fiber development process.

Key words: Colored cotton, Cotton fiber, Differentiation and protuberant, Pigment deposition

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