摘要
试验对引种驯化的野生草地早熟禾在田间自然感病的抗锈病能力做了初步研究,同时探讨了发病和恢复的时间进程与日温湿指数（TRH）相关性。以期为草坪管理提供理论依据,为野生种质资源评价、开发和新品种选育改良奠定基础。结果表明：发病率、严重度和反应指数在不同材料间存在巨大差异,3个参数变异范围分别为29%-97%、1.61-53.00、2.60-3.90,变异系数分别为37.48%、73.51%和24.51%。根据发病率、严重度、严重度级别、反应指数将供试材料聚为高度感病,中度感病和中度抗病型3类,可知大部分供试草地早熟禾都易感染锈病,感病型材料占66%左右,但亦有33%左右的材料中度抗病,为抗病品种的选育提供资源基础。
The rust resistance of wild Poa pratensis L. was tested. Meanwhile,discuss the relativity of the time course of disease occurring,recovery and TRH. It could be provide the theory base for the management of lawn, and the wild Poa pratensis will be excellent resources for breeding anti-disease characteristics. The results indicated that： there exist enormous difference in in different material, the variation in rang of leaves rate of rust disease, serious degrees of disease, comprehensive index is respectively 29%-97%, 1.61-53. 00, 2.60-3. 90,the CV are 37. 48%, 73. 51% and 24. 51% respectively. According to leaves rafe of rust disease, serious degrees of disease, comprehensive index, tested material will be divided in three types. HS（Highly susceptible）, MS（Medium susceptible）, MR（Medium resistance）. And 66% materials are susceptible type, only 33% Medium resistance.
出处
《北方园艺》
CAS
北大核心
2007年第6期129-131,共3页
Northern Horticulture
基金
四川省应用基础项目(05JY029-034-2)
关键词
草地早熟禾
锈病
抗病性
Poa pratensis L.
P uccinia
Disease resistance
