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1. Lignified tissues include SCLERENCHYMA and XYLEM.

2. A thick-walled lignified plant cell that is often branched.

3. Strong, big and well lignified seedlings should be used in afforestation.

4. The thickness of vessel walls, the diameter of lignified cells, the thickness of lignified cell walls and the width of fibers of willow showed a positive correlation to its resistance to the insect.

5. One-year-old half- lignified branches from Camptotheca acuminata trees were used to study the anatomical structure of stem and the formation of callus and adventitious roots.

6. Torus (pl. tori) A disk-shaped structure formed from lignified primary cell-wall material on the middle lamella of a bordered pit.

7. Hydroliquefaction of lignified biomass polysaccharide is studied at low temperature.

8. Lignified twigs without bud were difficult to take root, but when cut in the muddy loess, the effect of rooting powder (ABT) was prominent.

9. On analysis of lignified tissue in sunflower stems, the possibility of using it to make artificial wood is proved.

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10. The last is wood, which is the lignified tissue formed by plants that can conduct secondary growth, such as trees and shrubs.

11. Tracheids have heavily lignified walls and the only connection between adjacent tracheids is through paired pits, which are mainly concentrated in the end walls.

12. It is normally difficult to cut nice sections and prepare good micrographes from the highly_ lignified tissues by means of conventional sectioning methods.

13. Spiral thickening (helical thickening) The type of secondary wall formation in which a spiral band of lignified deposits is formed on the inner wall of the cell.

14. There are usually horizontal rather than the slanting end walls of tracheids. Vessel elements have lignified secondary cell walls and at maturity lack a living protoplast.

15. The cell wall has undergone secondary thickening , and is often lignified.

16. Changes of respiratory rate and glycolytic end products in brown lignified roots Prunus avium L.

17. Changes of respiratory rate and glycolytic end products in brown lignified roots of sweet cherry, Meizao(Prunus avium L.

18. Under the condition of shading in seedling period, the lignified degree of cotton stem declined, cambium and phloem were undeveloped and pint diameter increased.

19. The xylem parenchyma cell wall in roots of 2.47% salinity highly lignified and thickened, The secondary growth in high salinity was in advance and secondary structures developed.

20. A view of outer stem shows the relative absence of lignified strengthening tissues, and inner shows thin-walled parenchyma tissue and vascular bundles with large xylem lacunae.

21. When the aggregates reached a certain size the inner cells became lignified.