Research Progress of Nitrogen Absorption and Utilization Efficiency of Different Maize Genotypes
The evaluation method and index of NUE in maize were different, which resulted in different classifi?cation of maize genotypes. Current research mainly concentrated in roots of N absorption, leaves of N reduction and assimilation, plants of N accumulation and distribution, and the relationship between the growth potential in aboveg?round parts and nitrogen use efficiency(NUE). However, the ear and kernel development played a key role in maize yield with grains as main harvest object. But at present, the contribution rate of ear and kernel development to maize NUE, the differences of ear and kernel development between different genotypes and its physiological and biochemi?cal mechanism were studied less. There were some questions need to be further studied. Such as the relationship be?tween kernel development and NUE in different maize genotypes, kernel development, especially the early develop?ment of apical kernel(determine kernel number) reacted to N differently, the early development of apical kernel in high N efficient varieties was better than that in N inefficient types, and the influence of different NUE on kernel de?velopment in maize genotypes, etc.
MaizeNitrogen use efficiencyGenotypeRootNitrogen absorption and utilization
NETL
NSTL
万方数据
维普
