Seedling growth

Brownleader M.D. Hopkins J. Mobasheri A. et al. (2002) Role of extension peroxidases in tomato Lycopersicon esculentum MiU.) seedling growth // Planta V. 210. P. 668-676. Burhanova G.F. Yarullina L. G. Maksimov I. V. (2007) Effect of chitooligosaccharides on wheat defence responses to infection by Bipolaris sorokiniana / / Russ. J. of plant physiology. V. 54. P. 104 -110. 

M. J. Krogmeier and J. M. Bremner, Effects of phenolic acids on seed germination and. seedling growth in soil. Biol. Fertil. Soil ftll6 (1989). 

J. K. Fredrickson and L. F. Elliott, Effects on winter wheat. seedling growth by toxin-producing rhizobacteria. Plant and Soil 83 399 (1985). 

Psilotin (R 0-D-glucose) Psilotinin (R=H) o o / o Psilotun nudum and IVesiperis tannensis Inhibits seed germination and seedling growth... 

In our efforts to detect and isolate the allelcpathic agents from tall fescue and several other grass species, we extracted the detached plant material with water and/or organic solvents. Either solvent extraction method yielded extracts that were inhibitory to the seed germination and seedling growth in our bioassay systems. 

Abdul-Wahab and Rice (9) found that boiling water extracts of johnsongrass leaves inhibited germination and seedling growth of several bioassay species at concentrations 80 times that used in this present study. 

Table X. Effect of Compounds Isolated from Wheat by TLC on Morningglory Seedling Growth...

Bioassay on Solid Medium. A-9, a medium previously shown to be favorable for antibiotic production by actinomycetes in shake flasks (36), was modified for bioassays on solid medium. We halved the concentration of components in A-9 and adjusted the pH to 6.9-7.1 with KOH to reduce the possibility of osmotic or toxic effects of medium components themselves on seed germination and seedling growth. The medium was amended with 15 g agar per liter and poured into 10 x 10 x 1.5 cm square plastic petri dishes, about 60 ml per plate. 

Figure 3. Histograms showing growth response of cress, barnyard grass, and cucumber to 347 microbial isolates bioassayed on solid medium. Growth response 1) seedling growth minimal or germination nil, 2) pronounced inhibition, 3) slight inhibition, 4) growth comparable to controls, 5) stimulation over controls.

Chon SU, Choi SK, Jung S, Jang HG, Pyo BS, Kim SM (2002) Effects of alfalfa leaf extracts and phenolic allelochemicals on early seedling growth and root morphology of alfalfa and barnyard grass. Crop Prot 21 1077-1082... 

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