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Heterotic Effects of Dwarf Genes on Forage Production in Sudangrass ( Sorghum vulgare var. sudanense Hitch .) Lines and Hybrids 1
Author(s) -
Craigmiles J. P.
Publication year - 1968
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/cropsci1968.0011183x000800060044x
Subject(s) - hybrid , biology , sorghum , forage , dry matter , agronomy , botany
Results of a three‐year study show no difference in forage production of F 1 hybrid sudangrasses produced from A lines differing only in recessive factors for dwarfness. Two nearly isogenic lines, with factors regulating heights of 1.2 m and 3.6 m, produced forage yields of 6103 and 6390 kg of dry matter per ha, respectively. The 1.2 m lines contained 65% leaves; the 3.6 m lines, 56% leaves. The F 1 hybrids averaged 24% more total forage than that of the parental mean.