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REGISTRATION OF GENETIC STOCKS

Registration of N321-N340 Sorghum Seed Color/Plant Color Genetic Stocks

USDA-ARS, Dep. of Agronomy, Univ. of Nebraska-Lincoln, Lincoln, NE 68583-0937

Corresponding author (jfp{at}unlserve.unl.edu)

N321-N340 [Sorghum bicolor (L.) Moench] genetic stocks (Reg. no. GS-101 to GS-120, PI 612992 to PI 613011) were developed jointly by the USDA-ARS and the Agricultural Research Division, Institute of Agriculture and Natural Resources, University of Nebraska, and were released in July 1999.

N321, N322, N323, N324, and N325 have white seed/tan necrotic plant color. N326, N327, N328, N329, N330 have red seed/tan necrotic plant color. N331, N332, N333, N334, N335 have white seed/purple necrotic plant color. N336, N337, N338, N339, N340 have red seed/purple necrotic plant color. The 20 genetic stocks are S8 segregates of a single S3 family from the BC1 generation of the cross (BTx398 ms3 x BTx630)(ms3 x BTx630). They were developed with the goal of making seed available to test hypotheses concerning the combined effects of plant color and pericarp color in similar genetic backgrounds. The genetic stocks resemble BTx630, but have normal endosperm. They would be expected to have 97% common nuclear genes with the exception of those controlling pericarp color and necrotic plant color. Based on parental genotypes and observed segregation of the lines in crosses, the genotypes for the lines are presumed to be; red seed/tan necrotic plant color (RRYY ppQQ), red seed/purple necrotic plant color (RRYY PPQQ), white seed/tan necrotic plant color (RRyy ppQQ), and white seed/purple necrotic plant color (RRyy PPQQ).

These genetic stocks have immediate application for basic research on the effects of plant color and pericarp color on sorghum performance, quality, and biotic and abiotic stress resistance.

Seed of these genetic stocks will be maintained and distributed by the USDA-ARS, Wheat, Sorghum, and Forage Research Unit, Department of Agronomy, University of Nebraska, Lincoln, Nebraska 68583-0937, and will be provided without cost to each applicant on written request. Requests from outside the USA must be accompanied by an import permit. Genetic material of these releases will be deposited in the National Plant Germplasm System where it will be available for research purposes, including development and commercialization of new cultivars. It is requested that appropriate recognition be made if this germplasm contributes to the development of a new breeding line or variety/cultivar.

NOTES

Joint contribution of the USDA-ARS and the Dep. of Agronomy, Univ. of Nebraska-Lincoln, as Journal Series Paper no. 12887. Registration by CSSA.

Accepted for publication September 30, 2000.

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