Open AccessInfluence of some chosen morphactins on tissue formation in sunflower (Helianthus annuus L.) leaves
Author(s) -
A. Tomaszewski,
Elżbieta Weryszko-Chmielewska,
Grzegorz Skrodzki
Publication year - 2013
Publication title -
acta agrobotanica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 9
eISSN - 2300-357X
pISSN - 0065-0951
DOI - 10.5586/aa.1984.001
Subject(s) - parenchyma , xylem , helianthus annuus , epidermis (zoology) , botany , phloem , sunflower , biology , spongy tissue , horticulture , palisade cell , anatomy
The influence of two morphactins (IT 3233 and IT 3456) on the formation of tissues in sunflower leaves was investigated. The leaves were usually smaller, they had plicate laminae and rolled up edges. The different influence of morphactins in dependence on the position of the leaves on the stem and on the kind of tissues was confirmed. Leaves growing from the first node had the thickest laminae, main ribs and the longest cells of palisade parenchyma. The values contrasted with those in the leaves from the third node. An increase of the number of epidermis cells and stomata in leaves from the first and second node and a decrease in those from the third node were observed. Additional layers (1-2) of palisade parenchyma in leaves of the second and third node were formed. Mesophyll was very compact. Xylem consisted of a greater number of elements, arranged compactly and of much lower diameter