不同熟期夏玉米品种生长发育特性与产量形成的关系

赵继玉,任佰朝,赵斌,刘鹏,张吉旺

Relationship Between Growth and Development Characteristics and Yield Formation of Summer Maize Varieties Differing in Maturities

ZHAO JiYu,REN BaiZhao,ZHAO Bin,LIU Peng,ZHANG JiWang

表6 不同熟期夏玉米品种雌穗小花分化和穗粒数的形成

Table 6 Floret differentiation development and the grain number per panicle formation of summer maize hybrids differing in maturity

年份 Year 品种 Hybrid 总小花数 Number of total floret 花丝数 Number of filament 受精小花数 Number of fertilization floret 穗粒数 Number of normal kernel 小花受精率 Floret fertility rate (%) 小花结实率 Flower seed setting rate (%) 籽粒败育率 Seed abortive rate (%) 总结实率 Total seed setting rate (%) 总败育率 Total abortive rate (%) 2017 DH518 618c 613c 530bc 497b 85.9a 93.8b 6.2b 80.5a 19.5c HZ8 606c 600c 513c 469c 84.8a 91.3b 8.7b 77.4b 22.6b ZD958 675b 664b 547b 535a 81.0b 97.8a 2.2c 79.2ab 20.8bc DH605 784a 756a 658a 487b 83.9a 74.1c 25.9a 62.1c 37.9a 2018 DH518 604c 598c 524b 492b 86.8a 94.0c 6.0b 81.6b 18.4c JNK728 592c 587c 507c 488b 85.7b 96.1b 3.9c 82.4a 17.6d ZD958 656b 645b 533b 520a 81.3d 97.5a 2.5d 79.3c 20.7b DH605 758a 733a 634a 522a 83.6c 82.3d 17.7a 68.8d 31.2a