黑龙江省不同生态区玉米杂交种主要农艺性状的遗传相关与通径分析

运用SPSS18.0对不同生态区玉米杂交种产量与主要农艺性状中的生育期、株高、穗位高、穗长,穗粗、秃尖长、穗行数、行粒数、百粒重和出籽率关系进行逐步回归分析和通径分析。结果表明,根据积温、地理和气候条件,黑龙江省试验二区在品种选育上应着重选择粗穗、长穗、行多和出籽率高的品种;黑龙江省试验四区在品种选育上应着重选择生育期适当、低穗位高和适当提高株高的品种;黑龙江省试验五区在品种选育上应着重选择粗穗、长穗、出籽率高和封顶性好的品种;黑龙江省试验六区在品种选育上应着重选择中长穗和封顶性好的品种。

Analysis of Hereditary Correlation and Path of Main Agronomic Characters of Maize Hybrids in Different Ecological Regions of Heilongjiang

Using SPSS18.0, stepwise regression analysis and path analysis were performed on the relationship between maize hybrid yield and main agronomic traits in different ecological regions. The results indicated that in the second eco-regions of Heilongjiang province particular attention should be paid to the selection of ear length, ear diameter, rows per ear and produced grain rate in the maize breeding; In the fourth eco-regions particular attention should be paid to the selection of growth period, plant height and ear height in the maize breeding; In the fifth eco-regions particular attention should be paid to the selection of ear length, ear diameter, bald length and produced grain rate in the maize breeding; In the sixth eco-regions particular attention should be paid to the selection of ear length, ear diameter and bald length in the maize breeding.