Evaluation of temperate quality protein maize (QPM) hybrids for field performance and grain quality
| العنوان: | Evaluation of temperate quality protein maize (QPM) hybrids for field performance and grain quality |
|---|---|
| المؤلفون: | Jelena Vančetović, Sofija Bozinovic, Goran Stankovic, Dragana Ignjatovic-Micic, Nenad Delic, Olivera Djordjevic-Melnik, Marija Kostadinovic |
| المصدر: | Chilean journal of agricultural research v.80 n.4 2020 SciELO Chile CONICYT Chile instacron:CONICYT Chilean Journal of Agricultural Research |
| بيانات النشر: | Instituto de Investigaciones Agropecuarias, INIA, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | 0106 biological sciences, Adapted QPM, Field (physics), 02 engineering and technology, Biology, 01 natural sciences, Zea mays, Protein content, Quality (physics), 0202 electrical engineering, electronic engineering, information engineering, Grain quality, Temperate climate, Hybrid, 2. Zero hunger, tryptophan content, grain yield, food and beverages, protein content, kernel modifications, Agronomy, Grain yield, 020201 artificial intelligence & image processing, Animal Science and Zoology, Agronomy and Crop Science, 010606 plant biology & botany |
| الوصف: | 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. |
| وصف الملف: | text/html |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a932fef8efbdd59e73a290b169024a8a http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392020000400598 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....a932fef8efbdd59e73a290b169024a8a |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |