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人们常常讲作物的生长发育,其实是两个概念:生长是指作物细胞的分生和分化,是作物体由小到大在量上的增加。发育则是由于细胞分化所导致的作物体根、茎、叶的形成,由营养体向生殖器官的转化,指作物体在质上的变化。作物是怎样生长的?我们知道农作物的植株都是由许许多多的细胞组成的。细胞进行分裂,使其数
People often talk about crop growth and development, in fact, are two concepts: growth refers to crop cell differentiation and differentiation, is the body of small to large increase in quantity. Development is due to cell differentiation caused by the body root, stem, leaf formation, from vegetative to reproductive organs, refers to the change in the quality of the object. How do crops grow? We know that plants are composed of many cells. Cells divide to make their number