4.5 Article

Effects of length and position of hypocotyl explants on Cuminum cyminum L. callogensis by image processing analysis

Journal

PLANT CELL TISSUE AND ORGAN CULTURE
Volume 121, Issue 3, Pages 657-666

Publisher

SPRINGER
DOI: 10.1007/s11240-015-0736-0

Keywords

Cuminum cyminum L.; Tissue culture; Physical properties; Image analysis; Weighted density

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The effect of length and position of cumin hypocotyl explants on physical and morphological properties of callus were analyzed by machine vision. Explants were selected at three levels (3, 5 and 7 mm) and set on solid media (B5 containing 0.6 mg l(-1) NAA and 0.1 mg l(-1) BAP) horizontally (Hp) or vertically (Vp). Results showed that mean values of fresh weight (FW) and volume (V-C) of calluses in Hp (0.214 g and 0.205 cm(3)) were bigger than evaluations for Vp (0.194 g and 0.181 cm(3)); length of explant had a significant effect on major axis length (a), roundness (R), elongation ratio (E-r) and rectangularity ratio (R-r) of calluses (P a parts per thousand currency sign 0.05). The density of callus for Vp (1.075 gr cm(-3)) was larger than evaluations for Hp (1.055 gr cm(-3)) and the ratio of uncovered area to volume (A(UC)/V-c) was generally influenced by Vp (P a parts per thousand currency sign 0.01). Results also showed that the factor of weighted density (WD) had better prediction performance relative to area of callus (A(C)) for modelling the FW of calluses. Results indicated that the generalized extreme value (GEV) distribution model was the most likely, and the Weibull distribution model was the least likely probability density function model for modeling A(C), FW and V-C distributions of calluses.

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