Response of Root Morphology to Nitrate Supply and its Contribution to Nitrogen Accumulation in Maize (Record no. 46694)

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fixed length control field 02442nam a2200277Ia 4500
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control field MX-MdCICY
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control field 20250625153855.0
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Transcribing agency CICY
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Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-12487
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245 10 - TITLE STATEMENT
Title Response of Root Morphology to Nitrate Supply and its Contribution to Nitrogen Accumulation in Maize
490 0# - SERIES STATEMENT
Volume/sequential designation Journal of Plant Nutrition, 27, p.2189-2202, 2004
520 3# - SUMMARY, ETC.
Summary, etc. Selection for nitrogen (N)-efficient crops is considered to be an effective approach for minimizing the input and the loss ofNfertilizers in agricultural fields. This study investigated the hypothesis that nitrate supply may induce changes in root morphology so that N uptake efficiency can be influenced. Different levels of nitrate concentration (0.04, 0.2, 2, and 4mM)were supplied to five maize (Zea mays L.)inbred lines that had shown different N efficiencies. Possible correlations between N-uptake efficiency and several root parameters of root morphology were evaluated. The two N-efficient varieties, 478 and H21, had higher shoot and root weight and absorbed more N than the two N-inefficient lines, Wu312 and Zong31, especially under low N supply. In general, high nitrate levels (2 and 4mM)increased the total length of lateral roots (LR), but limited the total length of primary roots (PR)(including seminal and nodal roots)as well as the average length of primary roots. As a result, the total root length (TR)increased with the increasing of nitrate levels. TotalNaccumulation had significant positive correlations with the root dry weight, TR, and PR at low N supply (0.04-2 mM). At high N supply (4 mM), however, only LR was to some extent correlated to N accumulation. It is concluded that, under N deficient situation, a larger root system (total root length and root surface area)that resulted mainly from the longer primary roots contributed to the efficient N accumulation. At sufficient N supply, longer lateral roots are the main factor contributed to N accumulation.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element ROOTS
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element NITRATE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element NITROGEN UPTAKE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element MAIZE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element ZEA MAYS L.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Wang, Y.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Mi, G.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Chen, F.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Zhang, J.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Zhang. F.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1BmK0FJY-2HyGtSzbmASzsZa5c9Ptx5EG/view?usp=drivesdk">https://drive.google.com/file/d/1BmK0FJY-2HyGtSzbmASzsZa5c9Ptx5EG/view?usp=drivesdk</a>
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-12487 25.06.2025 25.06.2025 Documentos solicitados