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山东大豆品种从 5 0年代至 90年代历经 4次更新换代 ,单产增长了近 3倍。生产上应用的大豆品种株型性状向半矮秆紧凑型变迁。百粒重增加 6 .1 2g ,蛋白质含量有较大提高 ,抗倒性、稳产性明显增强 ,适应范围越来越广。抗病毒病已成为育成品种共性 ,少数品种已具有抗线虫、抗蛀荚虫的能力。高、低产品种的高产基因型性状特征有明显不同。中低产品种的高产基因型特征性状有株荚数、株高、株茎重、分枝数。株荚数对产量的贡献率达 5 0 .3%。产量较高品种的高产基因型性状有粒茎比、主茎节数、百粒重和株荚数。粒茎比对产量贡献率达 6 3.5 8%
Shandong soybean varieties from the 1950s to the 1990s after 4 times replacement, yield increased nearly 3 times. Plant-type traits of soybean varieties used in production changed to semi-dwarf compactly. Increasing the grain weight by 6 .1 2g, protein content has greatly increased, lodging resistance, stable yield was significantly enhanced, the scope of adaptation is more and more widely. Antiviral disease has become a bred common species, a few varieties have resistance to nematodes, anti-Caterpillar fungus ability. The characteristics of high-yielding and low-yielding genotypes of high and low-yielding cultivars were significantly different. Middle and low yielding varieties of high yield genotype traits pods, plant height, plant stem weight, number of branches. The number of strains of pods on the yield contribution rate of 50.3%. High-yielding varieties of high-yielding genotype traits have grain-stem ratio, the main stem section number, 100-grain weight and plant pods. Grain stems than the yield contribution rate of 6 3.5 8%