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| Photosynthesis and Dry Matter Accumulation in Different Chlorophyll-Deficient Rice Lines |
| WANG Dan-ying, CHEN Song, TIAO Long-xing, ZHANG Xiu-fu |
| 1.China National Rice Research Institute, Hangzhou 310006, P.R.China |
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摘要 Three different chlorophyll-deficient rice isogenic lines chl, fgl and pgl, and their recurrent parent zhefu802 (zf802) wereused to study effects of leaf color on photosynthesis, dry matter accumulation, yield, and quality in early season indicarice. Analysis showed that the chlorophyll (Chl.) a/b ratio of isogenic lines chl-8, pgl and fgl was 5.35, 10.00 and 15.46,respectively, among them, line fgl had higher leaf area index (LAI), higher net photosynthetic rate and higher grain-fillingrate than its recurrent parent zf802 at the later period of grain filling stage; while LAI, net photosynthetic rate and drymatter accumulated in lines chl-8 and pgl were lower than in zf802. Differences were found in the grain yield and qualityamong chlorophyll deficient isogenic lines, lines fgl, chl-8 and zf802 had similar grain yield, which was significantly higherthan that of pgl; the highest milling quality was observed in isogenic line fgl, with relatively high protein content. Thisstudy showed that isogenic line fgl would become a unique material for the development of high yield rice with high grainquality because of its slow aging process and relative steady grain-filling rate.
Abstract Three different chlorophyll-deficient rice isogenic lines chl, fgl and pgl, and their recurrent parent zhefu802 (zf802) wereused to study effects of leaf color on photosynthesis, dry matter accumulation, yield, and quality in early season indicarice. Analysis showed that the chlorophyll (Chl.) a/b ratio of isogenic lines chl-8, pgl and fgl was 5.35, 10.00 and 15.46,respectively, among them, line fgl had higher leaf area index (LAI), higher net photosynthetic rate and higher grain-fillingrate than its recurrent parent zf802 at the later period of grain filling stage; while LAI, net photosynthetic rate and drymatter accumulated in lines chl-8 and pgl were lower than in zf802. Differences were found in the grain yield and qualityamong chlorophyll deficient isogenic lines, lines fgl, chl-8 and zf802 had similar grain yield, which was significantly higherthan that of pgl; the highest milling quality was observed in isogenic line fgl, with relatively high protein content. Thisstudy showed that isogenic line fgl would become a unique material for the development of high yield rice with high grainquality because of its slow aging process and relative steady grain-filling rate.
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Received: 24 December 2010
Accepted: 11 March 2012
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| Fund: This work was supported by the National Natural Science Foundation of China (30800674). |
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Corresponding Authors:
Correspondence ZHANG Xiu-fu, Tel: +86-571-63370584, Fax: +86-571-63370276,
E-mail: zhangxf169@sohu.com
E-mail: zhangxf169@sohu.com
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| About author: WANG Dan-ying, Tel: +86-571-63370276, E-mail: wdanying@yahoo.com.cn |
Cite this article:
WANG Dan-ying, CHEN Song, TIAO Long-xing, ZHANG Xiu-fu.
2012.
Photosynthesis and Dry Matter Accumulation in Different Chlorophyll-Deficient Rice Lines. Journal of Integrative Agriculture, 12(3): 397-404.
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