ACTA AGRICULTURAE BOREALI-SINICA

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Effects of Two Recurrent Selection Methods on the Major Traits of Maize Populations

LI Lu-jiang, YANG Ke-cheng   

  1. Maize Research Institute, Sichuan Agricultural University, Key Laboratory of Crop Genetic Resources and Improvement, Ministry of Education, Ya'an 625014, China
  • Received:2009-10-15 Published:2009-12-31

Abstract: In this article, the effects of biparental mass selection(MS) and half-sib-S3 family combining selection(HS-S2:3) on the major traits of the two maize populations were studied. The results indicated that the increase of grain yield per plant of P4C0, P4MSC1 and P4MSC2 was 21.64%, 10.29% and 8.70% compare to that of P4C0, respeetively, a significant or extreme significant progress was made. There was a significant decrease for 7. 53% compare to that of P5C0 in grain yield per plant of P5HSC1. The increase of grain yield per plant of P5MSC1 and P5MSC2 was -2.67% and 3.65%, the difference was not significant. The height of plant and ear increased significantly with the increase of grain yield in a mass selection program. The effects of HS-S2:3 on the height of plant and ear were different for the two populations. The performance of major traits changed and the phenotypic variation coefficients of most traits decreased with the advance of improvement. The MS was better in maintaining the genetic diversity of populations.

Key words: Maize, Recurrent selection, Traits, biparental mass selection (MS), Half-sib-S2: 3 family combining selection (HS-S2:3)

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Cite this article

LI Lu-jiang, YANG Ke-cheng. Effects of Two Recurrent Selection Methods on the Major Traits of Maize Populations[J]. ACTA AGRICULTURAE BOREALI-SINICA, doi: 10.7668/hbnxb.2009.S2.008.

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