耐密玉米新组合产量及其穗部性状分析

[目的]选出高产、高抗、综合农艺性状好的耐密玉米(Zea mays L.)新组合。[方法]运用间比法试验设计,研究4个耐密玉米新组合产量及其相关性状。[结果]新组合的平均产量与增幅的大小顺序一样均为PJX-7113×hg-1hg-1×110hg-1×139;千粒重与增幅的大小顺序一样均为PJX-7113×hg-1hg-1×139hg-1×110;穗长在17.07～19.92 cm;秃尖长在1.15～1.84 cm;穗行数在13.73～17.43行;行粒数在36.28～40.05行;穗粗在4.95～5.38 cm。[结论]综合考虑,在该试验条件下,新组合PJX-7的产量最高,综合性状较好,该组合审定后,适合在当地大面积推广种植。

Analysis of Yield and Ear Traits for New Combinations of Maize(Zea mays L.) Varieties with Tolerance to High Density

[Objective] The aim was to select the new combinations of maize varieties with tolerance to high density,high yield and resistance,and good comprehensive agronomic traits.[Method]With the method of the partition compares design,the yield and its related traits of four new combinations of maize varieties with tolerance to high density were studied.[Result]The average yield and its increase width of four new combinations of maize varieties had the same order,which was PJX-7 113 × hg-1 hg-1 × 110 hg-1 × 139;those of 1 000-grain weight and their increase width had the same order,which was PJX-7 113 × hg-1 hg-1 × 139 hg-1 × 110;the ear length was 17.07-19.92 cm;the bald tip was 1.15-1.84 cm;the rows per ear was 13.73-17.43;the kernels per row was 36.28-40.05;the ear diameter was 4.95 5.38 cm.[Conclusion]Considering comprehensively,the new maize combination PJX-7 is adaptive to promote and plant in local areas in a large scale after approval because of its highest yield and good comprehensive traits under this test conditions.