鲜食糯玉米新组合产量比较研究

目的]高产是玉米育种的一个重要目标,开展品种试验以筛选出适宜天津地区推广种植的高产鲜食糯玉米新品种。方法]通过对15个鲜食糯玉米新组合的田间农艺性状、抗性进行调查,分析其主要农艺性状与产量的相关性,以及农艺性状对产量的影响,比较各组合之间的产量,从而选出产量较高、综合农艺性状好的组合。结果]糯15病害严重,应该被淘汰;糯3和糯11的产量不稳定,不建议进行下一步的区试试验;糯7的产量稳定,且抗性好,是优良的组合,可以进行下一步的区试试验。结论]保持优良抗倒伏性的情况下,选育果穗长、行数多的组合有助于提高产量。

Comparative Study on Yield of New Combinations of Fresh Waxy Corn

Objective]High yield is an important target of maize breeding.The experiment was carried out to select the suitable new high-yielding waxy maize varieties grown in Tianjin.Method]Through surveying on agronomic traits, resistance traits of 15 fresh waxy corn new combination,correlation between yield and main agronomic traits and effects of agronomic traits on yield were analyzed.The yield of the combinations was compared to select high yield, good agronomic characters combination.Result]Nuo 15 should be eliminated because of serious diseases.Yield of Nuo 3 and Nuo 11 was understable , we didn't suggest carrying out further regional trials.Nuo 7 was a good combination with stable yield and strong resistance.It could be planted in the next regional trials.Conclusion]It is helpful to improve the yield by breeding longer ear and more rows combination under the condition of keeping good lodging resistance.