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Einfluß einer Stickstoff‐Spätdüngung auf das Korneiweiß einer lysinreichen Maishybride
Author(s) -
Zink F.,
Wilberg E.
Publication year - 1976
Publication title -
zeitschrift für pflanzenernährung und bodenkunde
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 0044-3263
DOI - 10.1002/jpln.19761390210
Subject(s) - lysine , endosperm , human fertilization , nitrogen fertilizer , hybrid , chemistry , embryo , nitrogen , protein quality , amino acid , zoology , biology , biochemistry , botany , agronomy , organic chemistry , microbiology and biotechnology
Effect of Late Application of Nitrogen on the Grain Protein of a Maize Hybrid Rich in Lysine 1. In pot experiments the influence of an additional late N fertilizer application at time of flowering on a high yielding lysine‐rich experimental maize hybrid has been determined. 2. N‐fertilization at flowering increased the total‐N and the lysine‐contant of the grains. The lysine‐N in % of total‐N was constant at 5,1%. Comparable values from a former investigation with an opaque‐ and a standard hybrid are 6,0% lysine‐N and 4,0% lysine‐N of total‐N, respectively. 3. The ratio of prolamine to gluteline was 1:1. N‐fertilization did not change this ratio. 4. The amino‐acid pattern of the single protein fractions, albumine globuline, prolamine and gluteline was very different, but it was not changed by N‐fertilization. 5. Dissecting embryo and endosperm, demonstrated that by late N‐fertilization the growth of embryo was promoted more than that of the endosperm. The embryo contributed 30% to total‐N and 44% to total‐lysine‐N of the grain and was not changed by the late N‐application. 6. At cultivating such improved hybrids it may be expected that the protein quality will not be changed by application of high amounts of N‐fertilizer, whereas the protein quantity will be increased.