东南亚特种水稻种质资源光合特性研究
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国家自然科学基金项目(31560363);公益性行业(农业)科研专项(201203029) ;广西自然科学基金(2014GXNSFBA118071);广西农业科学院科技发展基金(2015JM19)


Photosynthetic Characters of Special Rice Germplasm Resoures from Southeast Asia
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    摘要:

    东南亚国家丰富的自然资源和多样化的种植与消费习惯,孕育了大量的特种水稻资源,如有色稻、糯稻和香稻等。这些资源长期在相对封闭的条件下种植,基因高度纯合,表型十分稳定,是进行遗传和生理特性研究的良好材料。本文对56份东盟特种稻进行了光合指标测定和统计分析,结果表明供试材料的光合速率(Pn)和光合功能期差异(RSP)均表现为极显著水平,均值分别为27.15μmol?m-2?S-1和35.3d;进一步对这两个指标进行二维排序做出象限图,从中筛选出了Pn和RSP均值较高的种质资源14份,占总数的25%,这些高光效特种稻种质资源可作为特种品种选育的中间材料,同时也可为光合机理研究、高光效基因定位等提供基因资源。探讨了特种稻光合速率与农艺性状之间的相关性,其中,株型为中间类型、叶片颜色为绿色或深绿、剑叶状态为中间类型或直立,其光合速率相对高一些,为潜在的高光效育种材料。

    Abstract:

    In Southeast Asia countries, diversified natural resources、planting practice and consumption habit gave birth to a large number of special rice resources, including the colored rice, glutinous rice and fragrant rice types. These resources were long-term planted in relatively closed area, therefore, there are highly homozygous genes and stable phenotypic characteristics. They are ideal materials for genetic and physiological research. Fifty-six special rice resources collected from Vietnam, Laos and Cambodia were used to measure their photosynthetic parameters and statistical analysis. The results showed photosynthetic rate (Pn) and photosynthetic function duration (RSP) of the test material were extremely significant level, with the average values being 27.15μmol m-2 S-1 and 35.3d respectively; By making two-dimensional drawing quadrant, screened out 14 germplasm with relatively higher Pn and RSP, accounting 25% of the total.These germplasm can be used as an intermediate material of special rice type breeding, but also provides genetic resources for the photosynthetic mechanism research and high efficiency gene mapping. In additions, the correlation between special rice photosynthesis rate and agronomic traits were discussed, It was suggested that which an intermediate type plant type, leaf color is green or dark green, flag leaf state erect or intermediate type ,photosynthetic rate were relatively high, will be a potential material of high photosynthetic breeding.

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张晓丽,王强,陈雷,等.东南亚特种水稻种质资源光合特性研究[J].植物遗传资源学报,2016,17(6):1008-1013.

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  • 收稿日期:2015-12-21
  • 最后修改日期:2016-09-20
  • 录用日期:2016-03-23
  • 在线发布日期: 2016-10-14
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