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在吉林省中部地区,分析了20个玉米热带系与8个温带系间的160个温热组合的生育期、产量、植株形态特征和穗部性状。结果表明,玉米热带系与合344、四-287等早熟温带系组合的后代,其光敏感性降低明显,尤其是熟期比较早的自交系,反之作用较小;在产量方面,温热组合有一定的增产潜力,相对来说旅大红骨同这批热带系的杂交优势最强,Lancaster最弱;在穗部性状、植株形态性状方面,温热组合的穗部性状与对照差别明显,不同温带系在组合中的作用有较大差异,9046能延长穗长,吉V022能增加穗行数,Mo17能增加行粒数,四-287能减小秃尖、增加百粒质量。
In the central area of Jilin Province, the growth period, yield, plant morphology and panicle traits of 160 warm-blooded combinations among 20 maize tropical series and 8 temperate series were analyzed. The results showed that the offspring of the combination of maize tropical line and Hezuo 344 and Tetra-287 were obviously decreased, especially the inbred lines with earlier maturity, but less in the contrary. In terms of yield, In contrast, Lancaster was the weakest in hybrids between Ludiao and these tropical plants. In terms of panicle traits and plant morphological traits, the panicle traits of warm combination were significantly different from those of the control, The effect of different temperate lines in the combination is quite different. 9046 can prolong the spike length. Ji V022 can increase the number of ear rows, Mo17 can increase the number of rows, four -287 can reduce the bald tip, increase the quality of 100 grains.