Evaluation of temperate quality protein maize (Qpm) hybrids for field performance and grain quality
Authors
Ignjatović-Micić, Dragana
Kostadinović, Marija
Božinović, Sofija

Đorđević-Melnik, Olivera

Stanković, Goran
Delić, Nenad

Vančetović, Jelena

Article (Published version)
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Quality protein maize (QPM) (Zea mays L.) is primarily used for food in countries of tropical and sub-tropical regions
where maize is the main source of protein. Although its cultivation in temperate regions is hampered by residues of
exotic germplasm, it could be beneficial for use in livestock feeds as it was shown that substitution of standard maize
with QPM can improve livestock characteristics and decrease dietary lysine supplementation. The aim of this study
was to test 11 QPM hybrids obtained by crossing adapted QPM inbred lines for their performance in field trials in 2
yr at four locations, as well as to determine their relevant biochemical components. The main reason for rejecting nine
QPM hybrids was low grain yield, standard hybrids had higher yields on average for 37.8%. Hybrid ZPQPM6 had good
agronomic characteristics, but its biochemical components were nonsignificantly different from the standard hybrid.
Only hybrid ZPQPM13 met necessary criteria, grain yield co...mparable with standard hybrids, high tryptophan content
in different environments (average 0.083%) and hard endosperm (average score 1.87). Lysine content, measured after
mercantile production, was 0.44%. Quality index, although below the QPM threshold (which is 0.80%) was significantly
higher (p < 0.05) in ZPQPM13 in comparison with standard hybrid, indicating improved nutritional quality of the protein.
The results indicated that presence of exotic germplasm in these QPM hybrids is a consequential difficulty and that in their
parental inbred lines at least one more backcross with temperate germplasm should be done to select better adapted QPM.
Keywords:
Adapted QPM / grain yield / kernel modifications / protein content / tryptophan content / zea maysSource:
Chilean Journal of Agricultural Research, 2020, 80, 4, 598-607Publisher:
- Chile : Instituto de Investigaciones Agropecuarias, INIA
Funding / projects:
- Exploitation of maize diversity to improve grain quality and drought tolerance (RS-31028)
- Improvment of maize and soybean traits by molecular and conventional breeding (RS-31068)
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Institution/Community
MRIZPTY - JOUR AU - Ignjatović-Micić, Dragana AU - Kostadinović, Marija AU - Božinović, Sofija AU - Đorđević-Melnik, Olivera AU - Stanković, Goran AU - Delić, Nenad AU - Vančetović, Jelena PY - 2020 UR - http://rik.mrizp.rs/handle/123456789/819 AB - Quality protein maize (QPM) (Zea mays L.) is primarily used for food in countries of tropical and sub-tropical regions where maize is the main source of protein. Although its cultivation in temperate regions is hampered by residues of exotic germplasm, it could be beneficial for use in livestock feeds as it was shown that substitution of standard maize with QPM can improve livestock characteristics and decrease dietary lysine supplementation. The aim of this study was to test 11 QPM hybrids obtained by crossing adapted QPM inbred lines for their performance in field trials in 2 yr at four locations, as well as to determine their relevant biochemical components. The main reason for rejecting nine QPM hybrids was low grain yield, standard hybrids had higher yields on average for 37.8%. Hybrid ZPQPM6 had good agronomic characteristics, but its biochemical components were nonsignificantly different from the standard hybrid. Only hybrid ZPQPM13 met necessary criteria, grain yield comparable with standard hybrids, high tryptophan content in different environments (average 0.083%) and hard endosperm (average score 1.87). Lysine content, measured after mercantile production, was 0.44%. Quality index, although below the QPM threshold (which is 0.80%) was significantly higher (p < 0.05) in ZPQPM13 in comparison with standard hybrid, indicating improved nutritional quality of the protein. The results indicated that presence of exotic germplasm in these QPM hybrids is a consequential difficulty and that in their parental inbred lines at least one more backcross with temperate germplasm should be done to select better adapted QPM. PB - Chile : Instituto de Investigaciones Agropecuarias, INIA T2 - Chilean Journal of Agricultural Research T1 - Evaluation of temperate quality protein maize (Qpm) hybrids for field performance and grain quality VL - 80 IS - 4 SP - 598 EP - 607 DO - 10.4067/S0718-58392020000400598 ER -
@article{ author = "Ignjatović-Micić, Dragana and Kostadinović, Marija and Božinović, Sofija and Đorđević-Melnik, Olivera and Stanković, Goran and Delić, Nenad and Vančetović, Jelena", year = "2020", abstract = "Quality protein maize (QPM) (Zea mays L.) is primarily used for food in countries of tropical and sub-tropical regions where maize is the main source of protein. Although its cultivation in temperate regions is hampered by residues of exotic germplasm, it could be beneficial for use in livestock feeds as it was shown that substitution of standard maize with QPM can improve livestock characteristics and decrease dietary lysine supplementation. The aim of this study was to test 11 QPM hybrids obtained by crossing adapted QPM inbred lines for their performance in field trials in 2 yr at four locations, as well as to determine their relevant biochemical components. The main reason for rejecting nine QPM hybrids was low grain yield, standard hybrids had higher yields on average for 37.8%. Hybrid ZPQPM6 had good agronomic characteristics, but its biochemical components were nonsignificantly different from the standard hybrid. Only hybrid ZPQPM13 met necessary criteria, grain yield comparable with standard hybrids, high tryptophan content in different environments (average 0.083%) and hard endosperm (average score 1.87). Lysine content, measured after mercantile production, was 0.44%. Quality index, although below the QPM threshold (which is 0.80%) was significantly higher (p < 0.05) in ZPQPM13 in comparison with standard hybrid, indicating improved nutritional quality of the protein. The results indicated that presence of exotic germplasm in these QPM hybrids is a consequential difficulty and that in their parental inbred lines at least one more backcross with temperate germplasm should be done to select better adapted QPM.", publisher = "Chile : Instituto de Investigaciones Agropecuarias, INIA", journal = "Chilean Journal of Agricultural Research", title = "Evaluation of temperate quality protein maize (Qpm) hybrids for field performance and grain quality", volume = "80", number = "4", pages = "598-607", doi = "10.4067/S0718-58392020000400598" }
Ignjatović-Micić, D., Kostadinović, M., Božinović, S., Đorđević-Melnik, O., Stanković, G., Delić, N.,& Vančetović, J.. (2020). Evaluation of temperate quality protein maize (Qpm) hybrids for field performance and grain quality. in Chilean Journal of Agricultural Research Chile : Instituto de Investigaciones Agropecuarias, INIA., 80(4), 598-607. https://doi.org/10.4067/S0718-58392020000400598
Ignjatović-Micić D, Kostadinović M, Božinović S, Đorđević-Melnik O, Stanković G, Delić N, Vančetović J. Evaluation of temperate quality protein maize (Qpm) hybrids for field performance and grain quality. in Chilean Journal of Agricultural Research. 2020;80(4):598-607. doi:10.4067/S0718-58392020000400598 .
Ignjatović-Micić, Dragana, Kostadinović, Marija, Božinović, Sofija, Đorđević-Melnik, Olivera, Stanković, Goran, Delić, Nenad, Vančetović, Jelena, "Evaluation of temperate quality protein maize (Qpm) hybrids for field performance and grain quality" in Chilean Journal of Agricultural Research, 80, no. 4 (2020):598-607, https://doi.org/10.4067/S0718-58392020000400598 . .