四川农业大学学报 ›› 1996, Vol. 14 ›› Issue (04): 541-546,626.doi: 10.16036/j.issn.1000-2650.1996.04.012

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玉米改良单交种的效应研究Ⅰ.自交系48-2不同世代姊妹系配制姊妹种及改良单交的比较

雷本鸣, 荣廷昭, 刘礼超, 倪昔玉, 潘光堂, 黄玉碧   

  1. 四川农业大学农学院, 雅安市 625014
  • 收稿日期:1996-01-25 出版日期:1996-12-31 发布日期:2017-03-07

EFFECT OF MAIZE MODIFIED HYBRIDⅠ. COMPARISONS OF 48-2 SIB-INBREDS SELECTED FROM DIFFERENT GENERATIONS WITH THEIR SIB-CROSSES AND MODIFIED HYBRIDS

Lei Benming, et al   

  1. College of Agriculture. Sichuan Agricultural University/Yaan. Sichuan, China 625014
  • Received:1996-01-25 Online:1996-12-31 Published:2017-03-07

摘要: 在48-2的众多姊妹系中,选出不同世代的姊妹系9个,配成姊妹种和改良单交种进行比较研究。结果表明:从S3分离形成的妹妹系配成的姊妹种,有一定的优势,有利于提高制种产量,且用它们配成的改良单交种,其经济产量和主要农艺性状与对应正常单交种基本一致;同时还表明:一个自交系的同一姊妹种,对其所配的各改良单交种,具有不同的特殊配合力效应。

关键词: 玉米[45EJ, 49EJ], 姊妹系, 姊妹种, 改良单交, 世代[45AA, 49RA], 单交[49DB]

Abstract: Nine 48-2 sib-inbreds selected from S2, S3 and S4, their sib-crosses and modified hybrids were used to evaluated the effects maize modified hybrids. The results indicated that(1) sib-inbreds from S3 can improve seed production because of the heterosis existedim their sib-crosses, morever. the yield and main agronomic attributes of the modified hybrids with these sib-crosses are similiar to those of mormal hybrids; and(2) there are different specific combining abilities in the modified hybrids of the samesib-cross from one inbred.

Key words: MAIZB, SIB-INBRED, SIB-CROSS, MODIFIED HYBRID, GENERATION, SINGLE CROSSES

中图分类号: 

  • S513