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Comparative Culm Elongation Rates of Isogenic Sorghum Lines Differing by a Single Height Gene (Dw 3 ) 1
Author(s) -
Campbell L. G.,
Casady A. J.
Publication year - 1970
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1970.0011183x001000030036x
Subject(s) - elongation , biology , sorghum , seedling , anthesis , sorghum bicolor , botany , poaceae , horticulture , agronomy , cultivar , materials science , ultimate tensile strength , metallurgy
Results of a preliminary study comparing culm elongation rates of isogenic lines of ‘Japanese Dwarf’ broomcorn ( Sorghum bicolor (L.) Moench) differing by a single height (Dw 3 ) gene are reported. Culm elongation proceeded slowly until 36 to 39 days after seedling emergence and then proceeded rapidly until near the time of anthesis. The line with dominant Dw 3 had a much more rapid and extensive internode elongation than did the line with dw 3 . A possible relationship between floral initiation and the period of rapid culm elongation and the differential rate of culm elongation is indicated.