Effects of Sowing Date on Agronomic Characters, Yieldand Quality of Foxtail Millet Variety Jigu 16

Cong Xinjun; Li Guoyu; Yu Shuting; Shen Qun; Zou Renfeng; Li Ni; Yan Limei; Guan Yan'an

doi:10.14083/j.issn.1001-4942.2017.04.005

Abstract：Foxtail millet variety Jigu 16 with sethoxydim resistance was used as material.Eight sowing dates were set during April 29 and July 8, 2015 at the interval of 10 days.The plant density was set as 600 thousand plants per hectare.At five-leaf stage, 120 uniform seedlings were tagged in each plot for sampling.Thereafter, the agronomic characters, yield and yield-related traits were measured in mature period, and the quality traits were determined by using near infrared spectroscopy (NIRS).The results showed that there were significant differences in agronomic characters, yield traits and quality traits of Jigu 16 under different sowing dates.With the sowing date delayed, the growth period was shortened from 109 days to 86 days, which was predominantly caused by the lasting time from emergence to heading stage.The plant height, leaf number, ear length and ear diameter increased firstly and then decreased with the delay of sowing date.The spike weight, grain weight per spike, thousand seed weight and yield also increased firstly and then decreased.The predicted equation Y=324.00+52.34X-6.947X2 was the optimal model fitting for the relationship between sowing date and yield of Jigu 16.The content of fat and carbohydrate increased firstly and then decreased, while the protein and total amino acid showed opposite trend.The variation coefficient of amino acid content was the largest as 7.83%.In conclusion, the suitable sowing date for Jigu 16 was from May 27 to May 29 under this experiment conditions.