View Item 
      •   IPB Repository
      • IPB e-Journal
      • Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
      • View Item
      •   IPB Repository
      • IPB e-Journal
      • Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.

      Hubungan Antara Aktivitas Nitrat Reduktase Pada Akar Dan Tajuk Dengan Akumulasi Dan Asimilasi N Pada 16 Inbred Jagung

      Thumbnail
      View/Open
      e-Journal (910.4Kb)
      Date
      1986
      Author
      Solahuddin, Soleh
      Schrader, L.E.
      Metadata
      Show full item record
      Abstract
      The relationships between nitrate reductase activity (NRA) in the shoots and roots, NRA versus net nitrate uptake, and NRA versus accumulation of nitrate and reduced N were studied in 15-day-01d greenhouse-qrown seedlings of 16 corn (Zea mays L.) inbreds. The distributions of NRA, total N (TN), nitrate, and reduced N (RN) between roots and shoots were determined. The observed genotypic differences in accumulated N per plant were related to differences in root size, but factors other than root size also affected nit.rate absorption. Results of the present study are comparable to earlier results obtained with 12-week-01d plants. Both studies indicate that selection for genotypic variation in maize inbreds for uptake or accumulation of nitrate is possib1eo On the average, root NRA was 10.0\ and 3.0\ of shoot NRA on a gram fresh weight basis and on a per plant basiS, respectively. These data indicate that shoot NRA plays a greater role in N assimilation in corn seedlings than does root NRA. A positive relationship was observed in the 16 inbreds between root and shoot NRA as indicated by a highly significant correlation (r = 0.786**) based on a gram fresh weight basis. When total NRA per shoot was compared to total NRA per root, the correlation was also highly significant (r = 0.787**). The data suggest that root and shoot NR are both induced in paralle1 when high levels of nitrate are provided to corn seedlings. Corn genotypes with high shoot and root NRA also had high TN (r = 0.772** and r = 0.727**, respectively). On a per plant basis, genotypes with high NRA also had high TN and RN (r = 00 775** and r = 00 781**, respectively).
      URI
      http://repository.ipb.ac.id/handle/123456789/35669
      Collections
      • Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) [458]

      Copyright © 2020 Library of IPB University
      All rights reserved
      Contact Us | Send Feedback
      Indonesia DSpace Group 
      IPB University Scientific Repository
      UIN Syarif Hidayatullah Institutional Repository
      Universitas Jember Digital Repository
        

       

      Browse

      All of IPB RepositoryCollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

      My Account

      Login

      Application

      google store

      Copyright © 2020 Library of IPB University
      All rights reserved
      Contact Us | Send Feedback
      Indonesia DSpace Group 
      IPB University Scientific Repository
      UIN Syarif Hidayatullah Institutional Repository
      Universitas Jember Digital Repository