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Inheritance of Papery Glume and Cleistogamy in Sorghum 1
Author(s) -
Merwine N. C.,
Gourley L. M.,
Blackwell K. H.
Publication year - 1981
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/cropsci1981.0011183x002100060036x
Subject(s) - glume , sorghum , biology , hybrid , panicle , horticulture , botany , agronomy
Cleistogamous spikelets in sorghum [ Sorghum bicolor (L.) Moench] form when the inner glume is rolled, clasping the internal flower structures and preventing normal opening of the glumes. Cleistogamy is controlled by two independently‐inherited genes. Indurate (hard) glume is dominant to papery glume. The rolled glume condition is dominant to unrolled. Indurate glume is epistatic to rolling, and only papery glumes can exhibit rolling. The F 2 ratios from the cross (indurate glume × cleistagamous) show a good fit to a 12:3:1 ratio of induratercleistogamous (papery‐rolled): papery‐unrolled. This cleistogamy cannot be used to breed hybrids resistent to sorghum midge because one parent would be cleistogamous and prevent production of hybrid seed.