Titlebook: Structure and Function of Plant Roots; Proceedings of the 2 R. Brouwer,O. Gašparíková,B. C. Loughman Conference proceedings 19811st edition

Abjure

集合

Regulation of the mitotic cycle in seedling roots of , by environmental factorsrtly independent of cell division, nevertheless, they soon stop if there is no supply of new cells by the mitotic cycles. Thus, if we want to regulate the growth of plants, we should know how to regulate the mitotic cycle.

uncertain

Maturing seed root growth and metabolismatomical preparations has shown that the final size of the root cap (about 250 μ) is achieved and its growth is completed by the 20th day, that of the root by the 34th and of the hypocotyl by the 40th day after anthesis. It should be noted that while the size of the embryo root increases (3-fold) du

duplicate

内行

Cell proliferation during the development of lateral root primordia primordia. Thus, of the 231 500 cells in meristems, excluding the pericycle, in the apical 9.8 cm of roots of intact plants of ., 125 000 are confined to the apical meristem of the primary [3] and 106 500 to developing lateral root primordia [data derived from 18]. Unlike the single apical meristem

名字的误用

oxidize

乐器演奏者

Abnormalities in the ultrastructure of root cap cells in , L. induced by actinomycin D, hydroxyurea,e. These chemicals are known to be inhibitors of plant growth [1, 2, 4] and α-naphthylacetic acid (NAA) simultaneously influences morphogenesis [e.g. 5]. However, there have been few reports of the changes in ultrastructure of plant cells following treatment with these chemicals.

Tartar

demote

A light microscopic study of the central metaxylem ontogenesis in the root of barley (, L.)aximal length up to 1,3 mm [4]. The prospective cells of the central metaxylem divide only briefly and the mitosis soon passes into endomitosis with a continuing DNA synthesis, thus giving rise to endopolyploid nuclei with the DNA content of as much as 32C [4]. During the differentiation of the cent