内蒙古中东部食用向日葵品种的生态类型分布规律和利用价值

内蒙古中东部食用向日葵地方品种资源丰富,品种生态类型多样。地理分布上有明显规律,从东南到西北,海拔逐渐升高,温度逐渐下降;早、中熟品种较多,晚熟品种较少;生育期逐渐缩短;同一类型的品种叶片数明显减少,株高也有所变化,商品性也有所不同。文章在分析内蒙古中东部食用向日葵生态类型和分布规律的基础上,就地方品种改良利用和开展该区域新品种选育方向进行了探讨。

The Distribution Law of Ecotype and Utilization Value of Edible Sunflower of Mid-eastern Inner Mongolia

The variety resources of edible sunflower are rich and the ecotype is multiplicity in Mid-eastern Inner Mongolia. There is an obvious law in geographical distribution. From southeast to northwest, the temperature decreases as the altitude goes up; early maturing variety and medium variety is more and late variety is less, average growth period was shortened and leaf number reduced, there are also some changes in plant height and marketability is different. On the basis of analysis on ecotype and distribution law of edible sunflower of Mid-eastern Inner Mongolia, the author study on the genetic improvement and breeding new variety.