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本研究测定了7个玉米品种的种子发芽率、含水量、贮藏真菌、田间真菌、内部损伤、机械损伤和千粒重,对资料进行了通径分析。结果表明,贮藏真菌及种子含水量是影响种子发芽力衰退的最重要因素,二者对发芽力都有很大的、直接和间接的负作用。种子含水量通过贮藏真菌对发芽力的间接负作用大于其直接作用。田间真菌、机械损伤、内部损伤及千粒重对发芽力有着不同程度的影响,但不及上述二因素作用大。将种子含水量降至一定程度,以控制种带真菌的危害,对防止种子衰退,有重要意义。
In this study, the seed germination rate, water content, storage fungi, field fungi, internal damage, mechanical damage and 1000-grain weight of seven maize varieties were measured, and the pathways were analyzed. The results showed that the storage of fungi and seed moisture content is the most important factor that affects the decline of seed germination. Both of them have great, direct and indirect negative effects on the germination ability. Indirect negative effects of seed moisture content on germination through storage fungi were greater than their direct effects. Field fungi, mechanical damage, internal damage and 1000-grain weight had different degrees of germination, but less than the above two factors. The seed moisture content reduced to a certain extent, in order to control the hazards of belt fungi, to prevent the seed recession, of great significance.