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The Journal of Heredity 1984:75(4):314-316
© 1984 The American Genetic Association 75:314-316

other

Inheritance of stripe in pearl millet

S. Appa Rao, and M. H. Mengesha

Genetic Resources Unit, ICRISAT Patancheru, 502324, Andhra Pradesh, India

Abstract

A nonlethal chlorophyll-deficient mutant named stripe was detected in a pearl millet (Pennisetum americanum (L.) Leeke) accession IP-5009 collected from Nigeria. The stripe plants showed longltudinal yellow stripes alternating with green stripes on leaf blades, leaf sheaths, stems. peduncles, inflorescences, and spikelets. The stripe plants segregated yellow, stripe, and green depending on the number and size of the yellow stripes on the leaf blade. Segregation data from crosses of green and stripe plants did not fit a definite Mendelian ratio. The spikes of the stripe plants have yellow and green spikelets and when yellow spikelets were crossed with green spikelets, segregation data indicated that the yellow spikelet color was monogenic recessive to the green color. Since the yellow and green sectors that are genetically different from each other lie adjacent to each other, the stripe plants are considered to be chimeras.


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