Vol. 1, Issue 7 (2016)
Amino acids profiles of two coconut (Cocos nucifera) progenies as influenced by breaking of primary dormancy
Author(s): William Ubi, Godwin Michael Ubi, Martina W. Ubi³, Thomas Okweche
Abstract: Experiment was carried out in 2015 and 2016 to evaluate changes in Amino Acids during breaking of dormancy in two coconut (Cocos nucifera) progenies. The experiment was carried out using completely randomized design at Emmanuel College Laboratory Idomi, Cross River State, Southern Nigeria. The results showed that the kinds of Amino Acids and their amounts varied significantly (p<0.05) and their co-efficient of variability in most cases was 24%. The values obtained in the amount of Amino Acids in endosperm of dominant and non-dominant coconut with co-efficient of variability of 5% were lower than mean values obtained from the embryo. During release from dormancy, the amounts of various Amino Acids increased in both the embryo and endosperm. In the embryos, the greatest increases were in alanine, glutamic acid, proline, serine and argemine. In the endosperm the increase during dormancy release were greatest in alanine, glutamic acid, proline, serine and valine. Variations in amount of amino acids among progenies was recorded which of course was due to differences in the degree of seed dormancy. The amount of amino acids in both dormant and non-dormant embryos varied significantly (p<0.05) among progenies. These differences were much greater for non-dormant than for dormant embryos. These results are discussed in light of changes in amino acid during breaking of dormancy.