Simultaneous selection for stem borer resistance and forage related traits in maize (Zea mays ssp. mays L.) × teosinte (Zea mays ssp. mexicana L.) derived populations

Title 
Simultaneous selection for stem borer resistance and forage related traits in maize (Zea mays ssp. mays L.) × teosinte (Zea mays ssp. mexicana L.) derived populations 
Publication Type 
Journal Article 
Authors 
Niazi IAK, Rafique A, Rauf S, Teixeira da Silva JA, Afzal M 
Year of Publication 
2014 
Volume 
57 
Journal 
Crop Protection 
Pagination 
27 - 34 
Date Published 
03/2014 
ISSN 
02612194 
Keywords 
DIMBOA, Maize, Resistance, Segregation, Stem borer 
URL 
http://www.sciencedirect.com/science/article/pii/S0261219413002731 
DOI 
10.1016/j.cropro.2013.10.026 
Abstract 

Highlights

  • Introgression of resistance against MSSB by exploring wild sources of resistance.
  • Teosinte species was highly resistant to MSSB.
  • Basis of resistance was antixenosis and antibiosis with in species.
  • Selection of new recombinant plants with resistance to MSSB and a high leaf soluble solid.
  • F3 progenies showed high percentage (60%) of resistant plants.

Maize spotted stalk borer (Chilo partellus Swinhoe Pyralidae) (MSSB) is a serious pest of the maize (Zea mays ssp. mays L.) crop in Pakistan. This study was conducted to introgress resistance in maize against MSSB by exploring wild sources of resistance for the development of a resistant maize variety. To achieve this, teosinte (‘PI566674’) × maize (‘Sargodha-2002’) crosses were conducted and three populations (F1, F2 and F3) were established. These populations were screened at various locations and in a contrasting artificial insect infestation experiment. Teosinte species ‘PI566674’, following screening, was shown to be highly resistant to MSSB and had the ability to produce a high biomass (5 times higher than susceptible genotypes) under high temperatures (36–40 °C). The biomass of the F1 hybrid, which was highly susceptible to MSSB, was significantly reduced (P ≤ 0.05) following infestation by MSSB in all experiments. The introgression from teosinte for genes conferring resistance to MSSB was screened in segregating F2 and F3 generations. Despite a susceptible F1 population, F2 was resistant to MSSB. Twenty new recombinant plants with resistance to MSSB and a high leaf soluble solid (16 °Brix) content were identified. They were selected to grow the F3 population. Mean values of F3 progenies showed similar resistance to the F2 population but a high percentage (60%) of resistant plants was recovered.

 
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