Title: Analysis on the Effect of Reciprocal Crosses and Heterosis about Protein Content of F1 Seeds in Maize Grain
Abstract: Ten common maize inbred lines from different heterotic groups were crossed with each other by a 10×10 complete diallel cross design.Contents of their kernel protein were analyzed between parents and F1.The results showed that the protein in inbred lines and hybrids F1 were significantly different.Protein contents of inbred lines No.1,No.2 and No.3 were over 140.00 g·kg-1 while that of No.10 was the lowest with 97.15 g·kg-1.The contents of protein varied with crosses, 1×2,1×4,1×9 and 1×10 over 150.00 g·kg-1,2×7,3×4,3×6 and 3×9 over 147.00 g·kg-1,while 10×2 and 10×4 with 85.00 and 83.16 g·kg-1,respectively.It showed that the genetic background of parents had distinct effect on protein content of F1 seeds and the effect of female parent was superior to that of male parent with 19.13 g·kg-1.Protein content showed a certain heterosis in hybrids F1.The crosses whose heterosis exceeded value of mid-parent took up 54.4% in 90 crosses,and that of 24.4% was over high-parent.
Publication Year: 2007
Publication Date: 2007-01-01
Language: en
Type: article
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