[
    {
        "id": "osp-14151",
        "type": "article-journal",
        "title": "Effect of the Nitrate Reductase Genes (Nia) on the Quality of Different Lettuce Genotypes for Low Nitrate Content",
        "author": [
            {
                "family": "Al-Redhaiman",
                "given": "Khalid N."
            }
        ],
        "URL": "https://omanscience.com/en/articles/effect-of-the-nitrate-reductase-genes-nia-on-the-quality-of-different-lettuce-genotypes-for-low-nitrate-content",
        "language": "en",
        "issued": {
            "date-parts": [
                [
                    2005
                ]
            ]
        },
        "container-title": "Journal of Agricultural and Marine Sciences",
        "volume": "10",
        "issue": "1",
        "page": "41",
        "DOI": "10.24200/jams.vol10iss1pp41-47",
        "publisher": "Sultan Qaboos University",
        "ISSN": "2410-1060",
        "abstract": "Genotypic variation in nitrate concentrations of different lettuce genotypes belonging to four types (Butterhead, Cos/Romaine, Crisphead, and Stem lettuce) and its relationship to nitrate reductase genes (Nia) for low nitrate concentrations of leaves was investigated. The results showed that the Romaine genotype ' Lobjoit's Green' exhibited the lowest leaf nitrate concentration (4877.7 mg/kg dry weight). The highest nitrate levels were recorded in the Butterhead genotypes 'Augusta and Kennedy'. Nitrate concentrations in the roots were significantly higher in the Romaine genotype ' Little Gem' and the Butterhead genotypes 'Augusta and Merveille Des Quatre Saisons' than the other lettuce genotypes. Total N concentrations were higher in the Butterhead and Crisphead genotypes than in the Romaine and Stem lettuce genotypes. A significant positive association (r = 0.80, p > 0.01) was observed between leaf NO"
    }
]