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Variation in Protein Percentage in Different Portions of Peanut Cotyledons 1
Author(s) -
Tai Y. P.,
Young C. T.
Publication year - 1974
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1974.0011183x001400020017x
Subject(s) - cotyledon , biology , arachis hypogaea , kjeldahl method , arachis , botany , horticulture , zoology , agronomy , nitrogen , chemistry , organic chemistry
Six varieties of peanuts ( Arachis hypogaea L.) were studied for variation in percent protein by macro‐Kjeldahl analysis of small sections from four consecutive segments (I, II, III, and IV) of the two cotyledons, with section IV at the embryonic end of the individual seeds. The distribution of percent protein in the cotyledon was significantly different within each variety. Four small‐ and medium‐seeded varieties showed slightly higher protein in both end sections (I and IV) of the seeds than in the middle sections (II and III). High correlation coefficients were obtained between the protein percent of each section and that of the whole cotyledons except for section IV of the ‘Argentine’ variety. However, the combined sample from sections I and II produced less variability and gave an accurate estimate of percent protein for the whole cotyledons. All three seed parts of the six peanut varieties showed a significant difference in percent protein. The embryonic axis and the cotyledon had about the same amount of protein, but each had a much higher protein percent than did the seed coat.