دورية أكاديمية
Identification of drought-tolerant corn genotypes by multivariate analysis
| العنوان: | Identification of drought-tolerant corn genotypes by multivariate analysis |
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| المؤلفون: | Ricardo Silva de Sousa, Edson Alves Bastos, Milton José Cardoso, Diléia Rocha Pereira |
| المصدر: | Pesquisa Agropecuária Tropical, Vol 48, Iss 3, Pp 204-211 (2018) |
| بيانات النشر: | Universidade Federal de Goiás, 2018. |
| سنة النشر: | 2018 |
| المجموعة: | LCC:Agriculture (General) |
| مصطلحات موضوعية: | Multivariate discrimination, water stress, chlorophyll, leaf area index, Agriculture (General), S1-972 |
| الوصف: | The identification of genotypes that are tolerant to water deficit is crucial for the maintenance of the agricultural production. This study aimed to evaluate the genotypic variation for drought tolerance among corn genotypes by means of multivariate analysis, as well as to identify hybrids with high grain yield under conditions of water deficit and full irrigation. For this purpose, an experiment was conducted in a randomized block design, with 36 corn hybrids, being 34 experimental elite and two commercial (controls) hybrids, under water deficit and full irrigation, during the reproductive stage, with four replications. The irrigation levels, added to the rainfall, totaled 691.6 mm under full irrigation and 490.8 mm under water deficit. The evaluation encompassed the leaf area index, leaf chlorophyll content, interval between male and female flowering, number of rows per ear, number of grains per ear, ear length, 100-grain weight, ear yield, ear index, total number of grains, number of ears per m2, grain yield at 13 % of moisture and water-use efficiency. The evaluated hybrids showed useful genetic diversity for drought tolerance. Four experimental elite hybrids (3G7395, 3G7415, 1G7034 and 3G7335) stood out under water deficit, showing a high grain yield performance, if compared to the average of the control hybrids. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English Portuguese |
| تدمد: | 1983-4063 73451681 |
| Relation: | https://www.revistas.ufg.br/pat/article/view/52122/25873; https://doaj.org/toc/1983-4063 |
| DOI: | 10.1590/1983-40632018v4852122 |
| URL الوصول: | https://doaj.org/article/35abb8c6aa734516815bcff196a2f834 |
| رقم الأكسشن: | edsdoj.35abb8c6aa734516815bcff196a2f834 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19834063 73451681 |
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| DOI: | 10.1590/1983-40632018v4852122 |