| Isolation, Identification and Earliness Effect Analysis of Rice Dominant Earliness Gene Ef-cd |
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| 作者姓名： | DENG Xiao-jian WANG Ping-rong LI Xiu-lan DONG Chun-lin YANG Zhi-rong |
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| 作者单位： | [1]Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, P.R.China [2]College of Life Sciences, Sichuan University, Chengdu 610064, P.R.China |
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| 摘 要： | Ef-cd gene is a dominant earliness gene located on the short arm of rice chromosome 3. In this paper, through continuous backcross, self-pollination and molecular marker assisted selection, individual Ef-cd gene was isolated and its nearly isogenic lines were constructed by using early-maturing indica line 6442S-7 as the donor parent, and by using latematuring indica line Minghui 63 （MH63）, Shuhui 881 （SH881） and Shuhui 527 （SH527） as the recurrent parents （genetic background）, respectively. Further, it was found out that Ef-cd gene could generally advance rice to head 11-14 d earlier. So, it was considered that Ef-cd gene played an important role in rapid developing early-maturing and super high-yielding rice varieties.
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| 关 键 词： | 水稻 显性基因 早熟性 生长速度 |
Isolation, Identification and Earliness Effect Analysis of Rice Dominant Earliness Gene Ef-cd |
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| DENG Xiao-jian WANG Ping-rong LI Xiu-lan DONG Chun-lin YANG Zhi-rong.Isolation, Identification and Earliness Effect Analysis of Rice Dominant Earliness Gene Ef-cd[J].Agricultural Sciences in China,2005,4(8):561-566. |
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| Authors: | DENG Xiao-jian WANG Ping-Rong LI Xiu-lan DONG Chun-lin YANG Zhi-rong |
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| Abstract: | Ef-cd gene is a dominant earliness gene located on the short arm of rice chromosome 3. In this paper, through continuous backcross, self-pollination and molecular marker assisted selection, individual Ef-cd gene was isolated and its nearly isogenic lines were constructed by using early-maturing indica line 6442S-7 as the donor parent, and by using latematuring indica line Minghui 63 (MH63), Shuhui 881 (SH881) and Shuhui 527 (SH527) as the recurrent parents (genetic background), respectively. Further, it was found out that Ef-cd gene could generally advance rice to head 11-14 d earlier.So, it was considered that Ef-cd gene played an important role in rapid developing early-maturing and super high-yielding rice varieties. |
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| Keywords: | Rice Growth duration Earliness Dominant earliness gene Gene effect |
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