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Genetical studies in the genusSorghum

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Summary

The mode of inheritance of one seedling character and nine mature plant characters has been worked out in detail in the different interspecific crosses in the genusSorghum. The majority of the factor pairs exhibited simple inheritance. However, clear evidence for breakdown of dominance in different genetic backgrounds and data for the presence of ‘modifier gene complexes’ has also been obtained. The implication of these results to the genetic evolution of the variousSorghums species, is critically discussed. Further, the bearing of loci found duplicate with respect to various qualitative characters, has also been considered in relation to the polyploid origin ofArundinacea Sorghums. The genetics of the two new variants have been studied and the taxonomic importance of such anomalies is brought out.

Zusammenfassung

Die Vererbungsweise von Merkmalen innerhalb der GattungSorghum wurde an verschiedenen interspezifischen Kreuzungen eingehend untersucht (1 Samenmerkmal, 9 Merkmale der reifen Pflanze). Die Mehrzahl der Faktorenpaare zeigte einfachen Erbgang. Es ergaben sich jedoch auch klare Beweise für Dominanzverschiebungen in verschiedenem genetischem Milieu und Hinweise auf das Vorliegen von Modifikationsgenen. Die Folgerungen aus diesen Ergebnissen für die genetische Evolution der verschiedenenSorghum-Arten wurden kritisch diskutiert und die Bedeutung der für verschiedene qualitative Merkmale gefundenen polymeren Gene in Beziehung zum polyploiden Ursprung derArundinacea-Sippe vonSorghum behandelt. Die Genetik zweier neuer Varianten ist untersucht und die taxonomische Bedeutung derartiger Anomalien dargelegt worden.

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Authors and Affiliations

  1. College of Agriculture, Nagpur, Maharashtra, India

    M. A. Tayyab (Lecturer)

  2. Central Tuber Crops Research Institute (I.C.A.R.), Trivandrum — 10, Kerala, India

    M. L. Magoon (Director)

Authors
  1. M. A. Tayyab
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  2. M. L. Magoon
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Additional information

These studies were largely undertaken at the Division of Botany, I.A.R.I., New Delhi where the authors were previously located. They are, therefore, grateful to the Director, I.A.R.I., Dean of P.G. School and Head of the Division of Botany for their keen interest and facilities. One of us (M.A.T.) is also grateful to the Government of Maharashtra (Department of Agriculture), Dr.M. B. Ghatge, Director of Agriculture, Maharashtra State and Dr.B. S. Kadam for encouragement during the course of this investigation.

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Tayyab, M.A., Magoon, M.L. Genetical studies in the genusSorghum . Zuchter \ Genet. Breed. Res. 37, 16–25 (1967). https://doi.org/10.1007/BF00621150

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