Scientia Agricultura Sinica ›› 2005, Vol. 38 ›› Issue (05): 859-864 .

• CROP GENETICS & BREEDING·GERMPLASM RESOURCES •     Next Articles

Isolation, Identification and Earliness Effect Analysis of Rice Dominant Earliness Gene Ef-cd

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  1. 四川农业大学水稻研究所
  • Received:2004-07-30 Revised:2004-10-11 Online:2005-05-10 Published:2005-05-10

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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 nearly isogenic early-maturing lines were constructed by using a genic male-sterile and early-maturing indica line 6442S-7 as donor, and late-maturing indica lines Minghui 63 (MH 63), Shuhui 881 (SH 881) and Shuhui 527 (SH 527) as recipients (genetic background), respectively. Further, it was found out that Ef-cd gene could generally advance rice to head 11-14 days earlier. So, it is considered that Ef-cd gene has an important role in rapid developing early-maturing and super high-yielding rice varieties.

Key words: Rice, Growth season, Earliness, Dominant earliness gene, Gene effect

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