Patologiczne zmiany budowy morfologicznej pędu oraz anatomiczno-histologiczne u; łodydze fasoli (Phaseolus vulgaris L.) spowodowane brakiem boru w pożywce [Morphopathological and anatomohistalogical changes in bean shoots due to boron deficiency in the nutrient medium

Abstract

Boron deficiency did not change neitJher the size (on cross-section) of the epidermis, cortex parenchyma, sclerenchymatous fiber and xylem fiber eels nor of the phloem conducting elements. Important changes due to boron deficiency occurred in the cells of the endodermis, phloem parenchyma, cambium and xylem. The endodermis was particularly sensitive and was the first to react to boron deficit. The effect of boron deficit on cell division consisted of inhibition of growth of the stem growth apex, frequently, though not always, cessation of cambium cell division, enhanced division of phloem parenchyma and endodermis cells.