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The Journal of Heredity 1987:78(5):333-335
© 1987 The American Genetic Association 78:333-335

other

Glossy genes in pearl millet

S. Appa Rao, M. H. Mengesha, and C. Rajagopal Reddy

The authors are, respectively, botanist, program leader, and research associate, Genetic Resources Unit, ICRISAT, Patancheru 502 324, Andhra Pradesh, India. Submitted as journal article No. 579 by the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT). Thanks are due to the reviewer of the Journal of Heredity for suggestions on the manuscript.

Abstract

A new seedling marker named glossy was found in pearl millet [Pennisetum americanum (L.) Leeke]. Subsequently, seven more glossy lines were identified after screening a world collection of 16 480 germplasm accessions. The glossy characteristic was distinguish able at seedling emergence and persisted for 28 days. Similar to sorghum and maize, mist accumulated as droplets on glossy leaves of pearl millet. Intercrosses among the eight glossy lines indicated that three different genes control glossiness. The gene symbols assigned were gl1, gl2, and gl3. Studies of F2 segregation in reciprocal crosses between the glossy and nonglossy plants showed a segregation ratio of 3: 1 and no reciprocal differences. The F2 segregation ratios also showed that genes controlling purple plant color (P), long bristles (Bl) and trichomeless (tr) were independent of gl1 and gl2.


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