The Breeding and Utilization on the Multicytoplasmic Maize Hybrid Jiyu 988

doi:10.7668/hbnxb.2007.S2.019

Abstract

Abstract: The main goal for using CMS to produce corn hybrid is to ensure the seeds with high quality and reduce the product cost.The aim for using multicytoplasmic hybrid is to develope different cytoplasms with their own characteristics,and then,to improve the ability for adapting the adverse enviroments and disease resistance.A good hybrids Jiyu 988(6048×Huangxuan 921-6) is designed as heredity background.The CMS-S,M,R and 21A of S Group and Rb,Bb and Es of C Group are used as materials in the experiment.The female parent has been transferred from N cytoplasm to a homocaryotic multicytoplasm with mail sterile.Now,the sterility is steady.The male parent(961-2) is a very good restorer of CMS-21A,S and R. It has been opened up before our eyes that the utilization of Multicytoplasmic hybrid(including Jiyu988) is feasiable in the practice.

Key words: Maize, Cytoplasm male sterile ( CMS), Homocaryotic multicytoplasm, Multicytoplasmic hybrid

CLC Number:

S513.01

MA Chun-hong, LI Jiu-yun, DONG Wen-qi, LIU Zi-hui, LI Yun-chao, HAO Gui-qin, JIA Yin-suo. The Breeding and Utilization on the Multicytoplasmic Maize Hybrid Jiyu 988[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2007, 22(S2): 74-77. doi: 10.7668/hbnxb.2007.S2.019.

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