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中国农学通报

中国农学通报 ›› 2019, Vol. 35 ›› Issue (27): 8-11.doi: 10.11924/j.issn.1000-6850.casb20190500089

所属专题： 水稻

• 农学 农业基础科学 • 上一篇    下一篇

稗草质源水稻渝819B光合特性分析

张现伟, 段秀建, 唐永群, 肖人鹏, 刘强明, 李经勇   

  1. 重庆市农业科学院 重庆再生稻研究中心 重庆 402160
  • 收稿日期:2019-05-05 修回日期:2019-06-19 接受日期:2019-07-23 出版日期:2019-09-24 发布日期:2019-09-24
  • 通讯作者: 张现伟
  • 基金资助:
    重庆市基础与前沿项目“稗草质源水稻保持系819B光合特性分析”(cstc2016jcyjA0091)；重庆市社会事业与民生保障科技创新专项“优质 抗稻瘟病两系不育系的培育”(cstc2017shms-xdny80040)；重庆市农业科学院青年创新团队项目“优质广适水稻两用系的创制及育种利用”(NKY- 2018QC04)。

Rice Germplasm‘Yu819B’with Barnyard Grass: Photosynthetic Characteristics Analysis

  • Received:2019-05-05 Revised:2019-06-19 Accepted:2019-07-23 Online:2019-09-24 Published:2019-09-24

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摘要： 稗草是水稻属间植物，携带有水稻需要的有利基因。为了研究稗草外源基因导入后对水稻光合特性的影响，利用花粉管通道技术将稗草DNA导入到水稻保持系‘渝805B’中选育出水稻新保持系‘渝819B’，通过对‘渝819B’和背景亲本‘渝805B’在功能叶SPAD值和光合指标、产量结构及其组合产量进行比较分析，结果表明，‘渝819B’在叶绿素含量、净光合速率、胞间CO2浓度、产量结构及所配组合的产量均明显优于‘渝805B’，而在光合指标的在蒸腾速率、气孔导度性状上又低于‘渝805B’的相应值。说明稗草质源‘渝819B’具有典型的高光效特性。

关键词: 杜鹃花, 杜鹃花, 栽培基质, 生长指标

Abstract: Barnyard grass is an intergeneric plant that carries the favorable genes of rice needed. In order to study the effects of photosynthetic characteristics of rice that barngrass gene transduction, introduced barnyard grass DNA into ''Yu805B'' by pollen tube pathway, a new rice ''Yu 819B'' was selected. Comparing the SPAD value, photosynthetic index, yield structure and combined yield of ''Yu 819B'' and background parent ''Yu 805B''. The results showed that the yield of ''Yu819B'' was significantly better than that of ''Yu805B'' in chlorophyll content, net photosynthetic rate, intercellular CO2 concentration, yield structure and its combination, while the transpiration rate and stomatal conductance of photosynthetic index were lower than that of ''Yu805B''. It indicate that ‘Yu819B’ has typical high photosynthetic efficiency.