论文部分内容阅读
对1987～2011年湖北省油菜区域试验中参试品种的产量、抗病性、品质及其它重要农艺性状的相关数据进行了统计分析。结果表明:1987～2011年湖北省油菜品种的平均产量呈上升趋势,平均单株有效角果数变化不大,而平均每角粒数和千粒重都呈上升趋势;菌核病和病毒病平均发病率明显下降;平均含油量呈缓慢增长,芥酸和硫甙含量有明显下降趋势;株高在近年有轻微上扬趋势,全生育期天数则有所缩短。今后一段时间内,提高每角粒数、增加千粒重、适当降低株高,选育高含油量、高效多抗的早熟品种可能是油菜遗传改良的一个重要方向。
The statistical analysis was made on the yield, disease resistance, quality and other important agronomic traits of the tested varieties in the rapeseed area experiment from 1987 to 2011 in Hubei province. The results showed that the average yield of rapeseed varieties in Hubei province increased from 1987 to 2011. The average number of effective pods per plant did not change much, but the average number of grains per corner and 1000-grain weight tended to increase. The average incidence of sclerotinia and viral diseases The average oil content showed a slow increase, and the contents of erucic acid and glucosinolate decreased obviously. The plant height had a slight upward trend in recent years and the number of days in the whole growth period had been shortened. In the next period of time, it is an important direction for genetic improvement of rape to increase the number of grains per hill, increase 1000-grain weight, properly lower the plant height, breed the precocious varieties with high oil content and high effective polyclone.