不同熟期玉米籽粒灌浆特性的研究

对４个不同类型玉米品种百粒鲜重、干重、籽粒含水量及灌浆强度的测定分析。结果表明：（１）百粒鲜重与授粉后天数呈二次曲线关系；百粒干重与授粉后天数关系符合Ｌｏｇｉｓｔｉｃ方程。（２）东岳２１号百粒干重稳定，是由于灌浆盛期灌浆速度快，干重增加也较其它品种高；东岳１６９粒重高，是由于其灌浆高峰期灌浆强度大；掖单１３号干物质形成阶段主要在吵前期，后期积累较少；掖单４号开花授粉早，但灌浆高峰持续时间短，是造成

Studies on grain filling characteristics of hybrid corn with different growth durations

One hundred grain dry weight,100 grain fresh weight, grain moisture and filling intensity of 4 corn hybrids were measured. The results showed that there was a parabola relationship between 100 grain fresh weight and days after pollination while the elationship between grain moisture and days after pollination accorded with Logistic equation. The hybrid Dongyue 21 remained stable in 100 grain dry weight because of high filling rate and accumulation of more dry matter at the peak filling stage; Dongyue 169 produced heavy seeds for its high filling intensity at the peak filling stage; Yedan 13 accumulated dry matter mainly at early and middle filling stage; Yedan 4 had the low 100 grain dry weight which was caused by early flowering and short filling peak period.