Effects of Seeding Date on Protein and Amino Acid in Foxtail Millet
Gu Shilu; Ma Jianping(Crop Genetics Research Institute, Shanxi Academy of Agricultural Sciences, Taiyuan)
There is a positive correlation between protein yield and grain yield in foxtail millet,r =0. 9717. The grain yield and the protein yield are different with the various seeding date. The highest is on May 5, they are 63.21 ±11 .66g/pot and 7.91 ±1 .45g/pot respectively. They are 25.59% and27.40% higher than those which seeding date is on April 15 and 11. 5% and 20. 4% higher than on May 25. The Amino acid content of protein in foxtail millet regularly decreases with the postopnement of seeding. It is the lowest after the last ten-day of May. Compared with that on May 5, total amount ofamino acid decreases 14 .5% ～23. 5%, EAA decreases 14. 1 % ～24 .6% and EAAI decreases 15. 22%～25. 78%, in which lysine and methionine + cystine decrease seriously, CS of them are only 0. 317～ 0. 241 and 0 .461～0. 469 respectively, and thrconine, isoleucine and valine also decrease, CS of themare only 0. 588～0. 755.