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种子是植物的繁殖体,种子萌发后会慢慢发育成一株完整植株。在种子萌发和发育过程中,植物的性状和表征慢慢地表达出来,例如高秆、矮秆、高产以及颜色等性状,这就是基因的表达。种子的优劣在很大程度上直接影响后期产量,但是为什么农民种地时,用同样的种子种出来的作物表现出来的性状却大不相同呢?原来基因的表达会受到外界条件的影响,在育种时的确选育出了具有优良基因的种子,但是遇到不良条件时会影响基因的表达,比如:不良的苗床条件、不恰当的播种深度、不适宜的湿度、不合理的养分平衡、土壤害虫等会施加种子环境压力,最终表现为长势不好,出现黄化苗、
Seeds are the propagules of plants, the seeds will slowly develop into a complete plant after germination. In the process of seed germination and development, plant characters and character are slowly expressed, such as tall stalk, dwarf, high yield and color trait, which is the expression of the gene. The advantages and disadvantages of the seeds directly affect the late yield to a large extent, but why the characteristics of the crops grown with the same seeds are quite different when the peasants are growing? The original gene expression will be affected by external conditions, Seeds with good genes are indeed bred during breeding, but gene expression can be affected in adverse conditions such as poor seedbed conditions, inappropriate sowing depth, inappropriate humidity, unreasonable nutrient balance, Soil pests and other will exert pressure on the seed environment, the final performance is poor growth, emergence of yellow seedlings,