关键词: 产量, 产量, 氮肥用量, 移栽密度

Abstract:

In order to more effective improve and utilize existing maize landrace, forty-six excellent maize landrace in Henan Province were selected from different genetic groups based on phenotype and genotype cluster analysis, for yield and correlated traits reduplicate identification. Correlation and path analysis indicated that the greatest impact on yield was the 1000-kernel weight (r=0.7734), followed by ear length and ear diameter, covering a very significant positive correlation, in which 1000-kernel weight had the greatest positive direct path coefficient (P=0.6518), but ear rows little effect on yield. Therefore, raising the 1000-kernel weight, taking into account other yield traits was the effective way to improve the yield of maize landrace. So we could select maize excellent inbred lines of high yield from numerous maize landrace using this result, and combine with agronomic traits under field condition. Breeding researchers could accumulate breeding materials and receive correlative reference through this method.