玉米杂交种籽粒产量与主要农艺性状间关联度的研究

Correlative degree between kernel yield and main agronomic characters of maize hybrids

为了探索地处南亚热带的福建漳州地区玉米杂交种籽粒产量与 11个主要农艺性状之间的关联度 ,应用灰色关联度分析法对 2 5个玉米杂交种进行了初步研究。结果表明 ,玉米杂交种籽粒产量与这些农艺性状之间的关联序依次为穗粗、百粒重、穗长、茎粗、株高、穗粒数、穗行数、行粒数、抽丝期、散粉期和穗位高 ,其中籽粒产量与穗粗、百粒重、穗长、茎粗、株高和穗粒数等 6个性状的关系较为密切。因此 ,该区应重点选育穗大、粒大、粒多以及茎秆粗壮、株高 2 10

The correlation between kernel yield and 11 main agronomic characters of 25 maize hybrids were studied by grey correlative degree analysis in south subtropic area,Zhangzhou of Fujian province.The results showed that the kernel yield was closly related to ear diameter,100 kernels weight,ear length,stalk diameter,plant height and kernel numbers/ear,next to them are row numbers/ear,kernel numbers/row,days from seedling stage to silking,days from seedling stage to anther dust diffusion period and ear height.Thus,we must select mainly the maize hybrids with large ear,large size and much amount of kernels per ear,thick stalk and about 210 cm plant height in south subtropic area.This conclusion put forward a primary principle for breeding maize.