江汉平原地区野生西瓜引种表现

将新疆野生西瓜引种到江汉平原地区,观察其植株特征、生长发育、开花结果习性、抗病性等特征特性.结果表明,新疆野生西瓜在江汉平原地区生长势极强,抗病性强,无枯萎病发生,仅有轻微的炭疽病发生;雌花数少,第1雌花节位高,雌花蕾自然死亡率高,雌雄花比小,坐果率低,仅为26.7%,其中心可溶性固形物含量在1.5%～3.0%之间,无食用价值.因此不宜作生产用种,但其根系发达,抗病性强,可作为西瓜抗病育种和西瓜嫁接砧木的材料.

Introduction and Observation of Wild Watermelon in Jianghan Plain

Wild watermelon was introduced from Xinjiang.The phenophase,vegetative growth ,fruiting characteristics and disease resistance of the wild watermelon in Jianghan plain was observed.The results showed that wild watermelon had the characteristics of growing vigorously,stronger disease resistance,without fusarium wilt disease and with little anthracnose occurrence.The number of female flower was much less than that of male flower.The node of the 1st female flower was higher,and the natural mortality of female flower buds was higher.The percentage of fruit set was lower( 26.7%).The content of central soluble solids varied from 1.5% to 3.0%.It had no edible value and not suitable for production.It could be used as the materials of watermelon graft stock and disease resistant breeding.