Inicio  /  Agriculture  /  Vol: 12 Par: 7 (2022)  /  Artículo
ARTÍCULO
TITULO

The Hunt for Mungbean (Vigna radiata (L.) Wilczek) Genotypes and Breeding Lines Resistance to South Indian Bruchid Strain

Santhi Madhavan Samyuktha    
Devarajan Malarvizhi    
Irulappan Mariyammal    
Adhimoolam Karthikeyan    
Devina Seram    
Manickam Dhasarathan    
Sundarrajan Juliet Hepziba    
Venugopal Sheela    
Arumugam Thanga Hemavathy    
Duraisamy Kavithamani    
Shanmugam Kavitha and Natesan Senthil    

Resumen

Mungbean (Vigna radiata) is an important short-season legume widely cultivated in Asia, particularly India. It is highly susceptible to bruchids and developing bruchid resistance is an important goal in mungbean breeding programs. In the present study, 52 mungbean genotypes were evaluated for bruchid resistance based on the ?no-choice test? and identified two highly resistant genotypes (V2802BG and V2709) with no adult emergence and seed damage. Further, these two resistant genotypes were crossed with six high-yielding bruchid susceptible cultivars (CO 5, CO 6, CO 7, CO 8, VBN 2, and VBN 3), and 12 independent F1 populations were generated. Of these, one population derived from CO 6 × V2802BG was selected (based on the good combining ability of the parents) and forwarded to later generations to trace the bruchid-resistant lines. A total of 159 F2:3 families were screened for bruchid resistance, and the results showed that seven families were highly resistant, whereas the remainder were resistant to highly susceptible. Further, those seven families were evaluated in F4 and F5 generations. As a result, five highly resistant lines (BSR-GG-1-49-3-1, BSR-GG-1-56-2-2, BSR-GG-1-160-5-3, BSR-GG-1-170-2-4, and BSR-GG-1-198-1-4) with good agronomic performances were identified. The newly developed lines could be tested in multi-location trials and then be utilized as a potential source of genetic material for improving the bruchid resistance in mungbean breeding programs.

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