1·Current cultivars with pink bracts green spot cutting-edge, but have fundamental.
目前栽培品种的粉红色苞片尖端带有绿色斑点，但是瑕不掩瑜。
2·The factors influencing the frequency of rice transformation mediated by Agrobacterium have been investigated by using 16 commercially important indica and japonica rice cultivars or lines.
以16种重要的籼稻和粳稻栽培品种为材料，研究了影响农杆菌转化水稻频率的有关因素。
3·The principal apple cultivars in northwest China usually carry with apple latent virus. The percentage of carrying plants reached as high as 80-100%.
西北地区的苹果主要栽培品种都普遍带有苹果潜隐病毒，其带毒株率高达80—100%。
4·Sibship between 29 sugarcane cultivars and 12 ancestor species was analysed with RAPD.
本研究采用RAPD技术分析了甘蔗29份栽培品种与12份祖亲种的亲缘关系。