小麦黑胚病对种子发芽和出苗等生长因子的影响  

Influence of Wheat Black Point on Seed Germination and Emergence of Seedlings

作　　者：邢小萍[1] 袁虹霞[1] 孙炳剑[1] 李洪连[1] 

机构地区：[1]河南农业大学植物保护学院,河南郑州450002

出　　处：《麦类作物学报》2007年第5期919-922,共4页Journal of Triticeae Crops

基　　金：国家粮食丰产科技工程项目(2004BA520A06-11);国家"十五"重大科技项目(2001BA804A30);河南省科技攻关重点项目(0423011400)

摘　　要：为了解小麦黑胚病对种子发芽及出苗的影响,室内测定了2006年黑胚病发生严重的小麦品种漯麦4号的健康籽粒和发病籽粒的发芽势、发芽率、幼芽鲜重、出苗率以及三叶期的苗长、苗鲜重、根长、根鲜重。结果表明,小麦发生黑胚病后,病粒导致发芽势、发芽率、幼芽鲜重、出苗率、苗高、苗鲜重、根长、根鲜重降低,尤其是发芽势、发芽率明显降低,各病级处理间差异显著,种子病级与上述生长因子呈负相关。小麦黑胚病对小麦种质有较大的影响,尤其是重病粒。To explore the influces of wheat black point on seed germination and emergence of seedlings, the health and infected seeds of Luomai 4 which was infected wheat black point seriously in recent years were chosed to determinate the effects of wheat black point on growth factors of seeds, ineluding germination energy, germination ratio, fresh weight of bud, rate of emergence, fresh weight of seedling, root length and fresh weight of root. The results showed that infected seed could lead to the decreases of germination energy, germination ratio, fresh weight of bud, rate of emergence, seed ling height,fresh weight of seedling, root length and fresh weight of root. Germination energy and germination ratio were the most sensitive factors, and there were obvious differences between different treatments. The degrees of Seed disease had negative correlations with growth factors mentioned above. It is concluded that wheat black point disease has serious influences on the quality of wheat seeds,especially the seeds afected seriously.

关 键 词：小麦 黑胚病 生长因子 

分 类 号：S512.1[农业科学—作物学] S435.121