Inheritance and allelism of brown midrib trait introgressed in agronomically promising backgrounds in pearl millet (Pennisetum glaucum (L.) R. Br.)

Shashi Kumar Gupta and Ponnaiah Govintharaj
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Shashi Kumar Gupta: International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Hyderabad, Telangana, India
Ponnaiah Govintharaj: International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, Hyderabad, Telangana, India

Czech Journal of Genetics and Plant Breeding, 2023, vol. 59, issue 3, 176-187

Abstract: The lignin content of forage crops significantly affects the livestock's forage intake and its dry matter digestibility. The brown midrib (bmr) trait is known for its association with a reduced lignin content and increased digestibility. Pearl millet inbreds having the bmr trait were derived from two populations ICMV bmr and WRajPop bmr via continued selfing up to 6-8 generations. The results from the crosses revealed the presence of the same single recessive gene that controlled the bmr in both the populations. The stable expression of the bmr gene in the new genetic background indicated that there was no effect of modifier genes. Four inbreds were identified with the stable expression of bmr (three in ICMV 155 and one in the WRajPop background) with a high biomass potential, which can serve as a bmr source in future pearl millet forage breeding programmes.

Keywords: brown midrib introgression; crude protein; digestibility; forage yield; forage quality (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjg:v:59:y:2023:i:3:id:93-2022-cjgpb

DOI: 10.17221/93/2022-CJGPB

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