大蒜品种生态型与引种的关系

Relationship between ecotypes of garlic (Allium sativum L.) cultivars and introduction

不同生态型大蒜品种在陕西省杨陵地区 (北纬 34°18′)连年秋播结果表明 ,低温反应敏感型品种的蒜头重量一般不降低 ,但蒜瓣数减少 ,独头蒜和 2～ 4瓣的少瓣蒜增多 ,抽薹率下降 ;低温反应中间型品种一般可正常生长 ,但不同品种间的适应性有差异 ,特别是来自纬度较低而海拔较高地区的品种明显表现不适应 ;低温反应迟钝型品种可以形成蒜头 ,但单头重显著降低 ,抽薹性变差。因此 。

In the region of Yangling,Shaanxi(34°18′N latitude),different ecotypes of garlic cultivars were sowed in autumn in successively years.The results showed that the weight of single bulb among cultivars of Low Temperature Sensitivity Type was not decreased,but the number of cloves/bulb reduced,the percentage of single bulb and few number cloves bulb increased and the percentage of bolting reduced.Cultivars of Low Temperature Middle Type generally showed normal growth,but the adaptability varied among different cultivars,especially cultivars in the region of low latitude but high above sea level showed obvious unadaptability.In cultivars of Low Temperature Inactivity Type,although bulbs could be formed,the weight of bulb decreased seriously,the properties of bolting obviously changed badly.So,its necessary to make a well understanding of the ecotypes of garlic cultivars before introducing cultivars from different regions.