高油、高淀粉玉米杂交种主要生育特点研究与分析初报

The Research and Analys is of Main Bearing Character of High Oil and High S tarch Maize Hybrid

对比研究分析了高油、高淀粉玉米杂交种与普通杂交种的主要生育特点。结果表明,两者产量和品质有差别,高油杂交种的产量主要限制性状是千粒重低,灌浆和中后期脱水速度相对较慢,成熟时子粒含水量偏高,油分积累效率高,但完成全程油分积累的时间滞后,抗衰老能力偏弱。高油种质遗传基础狭窄问题较为突出;高淀粉杂交种乳熟中期前灌浆速度相对较慢,乳熟中后期淀粉积累效率较高。同时探讨了培育高油、高淀粉玉米杂交种的主攻目标性状。

The character of high oil,high starch corn and normal maize hybrid were anllyzed by contrat research the results showed that the differences in yield and quality between high oil and normal maize existed,the main re-strict of yield is thousand kernel weight low,milking and dehydrate speed is relative slowly in later period,high oil maize have higher moisture content in grain at harvest time,oil accumulation efficiency is high but the time of com-pleting the whole process lag popular maize,the ability of anti-decrepitude is weak.The problem of limited germplasm base is outstand;the speed of dry conduct accumulation of high starch maize is relative slowly before the middle period of stage-rough,the efficiency of starch accumulation is relative high after middle period of dough,at same time,put forward a little suggestions of main target property of developing high oil and high starch maize hybrid.