Diallelic analysis for lysine and oil contents in maize grains

Scientia Agricola

Leonardo Oliveira Medici²  Salete Aparecida Gaziola¹  Vanderlei Aparecido Varisi¹  José Antonio Carmezini De Paula¹  Renato Rodrigues Ferreira¹  Ricardo Antunes Azevedo¹ 

[1] ,UFRRJ Depto. de Ciências Fisiológicas Seropédica RJ ,Brasil

关键词: cereal;    opaque;    nitrogen;    proteins;    near infrared;    cereal;    opaco;    nitrogênio;    proteínas;    infravermelho próximo;   

DOI  :  10.1590/S0103-90162009000200009

来源: SciELO

【 摘 要 】

Six S5 lines of maize, with differences for lysine and oil contents in grains, were used to carry out a complete series of diallelic crosses. The resulting 15 hybrids were grown in a field at two nitrogen levels (10 and 130 kg N ha-1). The general combining ability (GCA) and specific combining ability (SCA) were obtained by using the method 4, model I of Griffing for grain yield, and grain lysine and oil contents. Significant (p < 0.001) interaction was observed between GCA and N levels for grain yield, indicating the selection of different lines for each N level. This interaction was not significant for lysine content, but there were significant effects of GCA for this trait at both N levels (p < 0.1). Significant effects were not observed for GCA or SCA for oil content, however a positive correlation was observed between lysine and oil contents in the hybrids, in the lines and even in the control cultivars. The results indicate the effectiveness of selection for lysine content, irrespective of N level, in the studied non-opaque maize lines, and the possibility of achieving both high lysine and oil content in grains.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License