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Dual-purpose landraces of pearl millet (Pennisetum glaucum) as sources of high stover and grain yield for arid zone environments

Published online by Cambridge University Press:  14 May 2008

O. P. Yadav  and
F. R. Bidinger
O. P. Yadav*
Affiliation:
Central Arid Zone Research Institute, Jodhpur342 003, India
F. R. Bidinger
Affiliation:
International Crops Research Institute for the Semi-Arid Tropics, Patancheru502 324, India
*
*Corresponding author. E-mail: opyadav21@yahoo.com; opyadav@cazri.res.in
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Abstract

Both stover and grain are important considerations in the adoption of the new pearl millet (Pennisetum glaucum) cultivars in crop–livestock farming system in north-west India. Local landrace germplasm contains many of the traits needed to breed new cultivars, which met such requirements. We evaluated 169 pearl millet landraces to assess their potential for breeding new open-pollinated varieties, and measured heterosis in landrace testcrosses to evaluate their potential for topcross hybrids breeding. There were significant differences among landraces in their total biomass, grain yield and stover yield. A high accumulation of biomass, followed by its efficient partitioning, was crucial in determining grain productivity under arid zone. There was also no trade-off between stover and grain productivity and several landraces outperformed check cultivars in both grain and stover yields. The manifestation of heterosis in the landrace-based topcross hybrids varied for different traits. Significant heterosis for biomass, grain yield and stover yield was observed in specific male-sterile seed parent × landrace-based pollinator combinations. Utilization of landraces in variety development and topcross hybrids breeding programmes targeting north-western India or similar regions are discussed.

Keywords

adaptationarid zoneimproved cultivarslandracespearl milletstover productivitytopcross hybrids
Type
Research Article
Information
Plant Genetic Resources , Volume 6 , Issue 2 , August 2008 , pp. 73 - 78
Copyright
Copyright © NIAB 2008

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