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Evaluation of Reserve Carbohydrates in Midland Bermudagrass (Cynodon dactylon L.)¹

Midland bermudagrass was grown at 35 and 30 C day and night temperatures with 300 and 30 pounds of nitrogen. The rhizomes were harvested at 7-day intervals and reserve carbohydrates determined by 0.2 N H₂SO₄, 2% H~SO4, taka-diasl:ase, alpha-amylase, and perchloric acid extractions

The glucose extracted by either acid or taka-diastase was compared with starch extracted by alpha-amylase. It was found that at the 5% level the glucose extracted by 0.2 N H₂SO₄ and taka-diastase was the same as the starch; while the 2% H₂SO₄ was higher. This correlation may not be applicable to other studies or other plant materials where weak structural materials may contribute glucose to the acid extractions.

² NDEA Research Fellow, Assistant Professor, and Professor of Agronomy, respectively.

Received for publication May 31, 1966.