Varietal Responses in Spring Barley to Natural and Artificial Lodging and to a Growth Regulator

摘要: Eight varieties of spring barley differing in their morphology and resistance to lodging were grown a trial as main plots which split for seven treatments: natural control (C), with mechanically supported (S) four artificially induced permanent early (PEL); temporary (TEL); late (PLL) (TLL). The seventh treatment (GR) was an application the growth regulator BAS 09800W. In comparison S, treatments PEL, TEL, PLL TLL reduced grain yield by 38–1, 24–8, 22–0 13–9 % respectively. Natural C two weakest strawed varieties, Guilden Jupiter, 8 10% respectively S. Yields (C) these increased GR had no effect on other but size some cases. Treatment significantly did not eliminate weaker length top internodes. Lodging terms 1000–grain weight sieving fractions content husk protein. susceptibility positively correlated plant height showed clear relationship number vascular bundles, stem diameter, wall thickness, or lignin, cellulose hemicellulose basal appeared be closely associated short