马里兰烟品种比较试验研究初报

为筛选出适合云南保山种植并达到优质、适产、抗性好的品种,对7个马里兰烟品种进行了田间比较试验。结果表明:(1)品种Md872、Md609、Md40长势较好,Md40与Md10株高均高于对照(Md609),Md872株高接近对照,Wilson最低。各供试品种单株平均留叶数25.43片,高于对照,品种间差异不大。Md10、MdBL大田生育期84d,属中晚熟品种,Md872、Md40为91d。属晚熟品种。(2)7个品种在田间均发生烟草普通花叶病,Wilson发病率,比对照高1.5倍,高感花叶病;Md872、Md40发病率最低,比对照发病率低90.00%,高抗花叶病。供试品种的黑胫病发病率均高于对照,Md201、Wilson黑胫病发病率比对照分别高68.10%、62.10%,为黑胫病感病品种;Md872和Md40发病率相对较低。(3)供试品种中Md40、Md872的产量、产值、均价与对照Md609相比差异不显著,上等烟比例相对较高。(4)农艺性状、抗病性、经济性状综合比较,Md872、Md40较适宜在云南保山与对照Md609同时进行小规模种植示范。

Study on Variety Comparison Test of Maryland Tobacco

In order to select quality Maryland tobacco varieties, which were appropriate for planting at Baoshan, the field comparison test of 7 introduced varieties were conducted and their agricultural and economic character, disease resistance were analysized. The agricultural character results showed that the plant height of Md40 and Md10 were higher than CK(Md609) and that of Wilson were lowest. The average leaf number was 25.43, higher than Md609, and there was no difference nearly among varieties. The growing stage of Md609, Md10, MdBL in fields was 84d however the Md872, Md40 was 91d. The resistance data indicated that the tobacco mosaic virus and tobacco black shank disease were found on all varieties, the virus disease incidence of Wilson was highest, that of Md872, Md40 were lowest among all tested material; Md201 and Wilson were easy to be infected by Phytophthora nicotianae, the variety Md609 was resistant to it. The economic character analysis indicated that the Md40, Md872 yield were higher than Md609, remarkable negative correlated to CK. The output value and the first-class tobacco proportion of each varieties were lower than CK. Md609, Md872, Md40 had better total characteristics so were consider primarily to be quality Maryland varieties, appropriate for planting at Baoshan.