文献知网节
  • 记笔记
摘要:Leaf and silique are two main photosynthetically active organs of Brassica napus,both of which play key roles in vegetative architecture and yield formation.Different from leaf,silique is a non-foliar organ,which may result in distinct structural and photosynthetic properties,along with their different responses to K deficiency.Therefore,measurement of anatomical and photosynthetic traits was carried out on leaf and silique during their steady stage of photosynthetic function in field condition with K sufficient supply(+K) and deficiency treatment(-K).The results showed that leaf K concentration was lower than silique,and more sensitive to K deficiency.Leaf photosynthesis(A) was 3 times higher than that of silique.K deficiency significantly decreased A of both organs.Though the total A decline was much smaller in silique,the stomatal limitation was the main restraint of A decline for both organs.Stomatal behaviour was intimately connected with stomatal function and anatomical traits.Stomatal conductance was much lower in silique and less sensitive to K deficiency than leaf.The stomatal density and total stomatal pore area were greater in leaf hypodermis,however silique had extremely larger stomatal length,width and pore area.Moreover,the chloroplast ultrastructure has been observed,showing that leaf cell had more chloroplasts,with a larger length,thickness and grana lamella.Overall,leaf organs are equipped with the stronger photosynthetic capacity ascribing to their prior stomatal conductance,chloroplast number and grana lamella.However,they were more susceptible to K deficiency.
会议名称:

第七届国际作物科学大会

会议时间:

2016-08-14

会议地点:

中国北京

  • 专辑:

    农业

  • 专题:

    农作物

  • 分类号:

    S565.4

  • 手机阅读
    即刻使用手机阅读
    第一步

    扫描二维码下载

    "移动知网-全球学术快报"客户端

    第二步

    打开“全球学术快报”

    点击首页左上角的扫描图标

    第三步

    扫描二维码

    手机同步阅读本篇文献

  • CAJ下载
  • PDF下载

下载手机APP用APP扫此码同步阅读该篇文章

下载:1 页码:339-340 页数:2 大小:233k

相关推荐
  • 相似文献
  • 读者推荐
  • 相关基金文献
  • 关联作者
  • 相关视频