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Registration of 15 Germplasm Lines of Grain Sorghum and Sweet Sorghum
Author(s) -
Gorz H. J.,
Haskins F. A.,
Johnson B. E.
Publication year - 1990
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/cropsci1990.0011183x003000030089x
Subject(s) - germplasm , sorghum , crop , library science , horticulture , biology , agronomy , computer science
ARS winter nursery in Puerto Rico, and Sj families were generated for the next cycle of selection. The S^ families were assayed for dhurrin content, and remnant seed of the selected families was bulked and planted in isolation in Nebraska. All plants other than those with brown midribs were eliminated prior to anthesis so that random mating occurred only among brown midrib plants. The spectrophotometric assay for HCN-p of 1-wk-qld seedlings, grown in the same test, resulted in the following values for means and standard errors (mg kg-' fresh weight, bulk of 10 seedlings per replication, three replications): NP37 male-sterile bulk—597 ± 30, B-CK60-1185 + 15, B-Redlan-1043 ± 34. The released seed is a composite of half-sib seed harvested from male-sterile plants in the third cycle after the two populations were combined. The population segregates for genetic malesterility (ws3), has brown midribs, purple plant color, white caryopsis color, and averages 110 cm in height at maturity. Seed of NP36 and NP37 will be maintained and distributed by the Department of Agronomy, University of Nebraska, Lincoln, NE 68583. Germplasm amounts will be provided without cost to each applicant upon written request while supplies last. Recipients of seed are asked to make appropriate recognition of the source of the germplasm if it is used in the development of a new germplasm, parental line, cultivar, or hybrid.