优质抗病西瓜新品种华萃9号的选育

9号是由合肥华夏西甜瓜科学研究所育成,合肥丰乐种业股份有限公司独家开发的外观美、品质优、抗性强的金钟冠龙型西瓜新品种。全生育期110天左右,果实发育期33天左右;椭圆形果,果皮绿底覆深绿色条带,大红瓤,质脆爽,汁多味甜,中心可溶性固形物含量12%,边部10%;皮厚1.0cm,硬韧,耐贮运;一般单瓜重5～6kg,产量4000kg/667m左右。2004年1月通过山西省农作物品种审定委员会审定。

抗病优质西瓜新品种黄河黑抗六号

黄河黑抗六号是由山西金鼎生物种业股份有限公司以果实黑圆形、板叶类型自交系802M为母本，以果实黑椭圆形优良自交系SM为父本，2007年育成的西瓜新品种，2011年通过山西省品种审定委员会审定。经过多年多区多点试种，表现优异。品种适应性强，在不同年份、不同气候和不同地区都能稳健生长，果形美观、稳产丰产，高抗枯萎病，中抗炭疽病，耐病毒病，品质优良。

Introduction of Bottle Gourd DNA into Watermelon by Soaking Embryo for Resistance to Wilt Disease

In order to utilize wilt disease resistance of bottle gourd,total DNA of bottle gourd was introduced into watermelon through the method of aoeking embryo.The DNA-introduced variant were cultured in contaminated soil to elect the wilt disease resistance for more than 3 genera- tions.2 high-resistant and 2 middle-resistant watermelon materials were obtained.

Utilization and Inheritance of Watermelon Resistance to Fusarium oxysporum f.sp.niveum Introduced from Bottle Gourd

Sugar Baby susceptible to Fusarium oxysporum f.sp.niveum was crossed with high resistant male parents D3-1 and D3-2,respectively.F1 hybrids showed high resistance.The segregation ratios of resistance to susceptibility of F2 and of BC1 hybrid population from Sugar Baby tallied with 3:1 and 1:1,respectively.The results indicated that the resistance to Fusarium wilt was a kind of dominant inheritance controlled by mono-gene or mono-segment DNA.Furthermore,5 hybrid combinations with fine character were bred.Among them,3 were high resistant to Fusarium wilt,and 2 were medium resistant.