花生芽对温度变化的生长动态响应OA

[Objective]To clarify the dynamic growth response of peanut sprouts to temperature changes and to provide a reference for peanut sprout production.[Methods]Luhua No.8,Yuhua 155,Yuhua 9326,and Yuhua 9719 were used as experimental materials.They were cultivated in darkness at environmental temperatures of 20,25,and 30℃.From the day of germination to flowering of peanut sprouts,hypocotyl length and fresh weight,radicle length and fresh weight,and radicle number were measured,and the length root to shoot ratio and the fresh weight root to shoot ratio were calculated.[Results]At 20,25,and 30℃,the growth time of each peanut sprout variety to flowering was 132,108,and 84 h,respectively.At flowering of each peanut sprout variety,the environmental temperatures for hypocotyl length(from high to low)was 25℃﹥30℃﹥20℃,while the hypocotyl fresh weight was 25℃﹥30℃﹥20℃.The environmental temperatures for radicle length(from high to low)of Luhua No.8,Yuhua 155,and Yuhua 9326 were 25℃﹥30℃﹥20℃,and Yuhua 9719 was 25℃﹥20℃﹥30℃.Radicle fresh weight of Luhua No.8,Yuhua 9326,and Yuhua 9719 were 25℃﹥30℃﹥20℃,while Yuhua 155 was 30℃﹥25℃﹥20℃.The radicle numbers of Luhua No.8 and Yuhua 9326 were 30℃﹥25℃﹥20℃,while Yuhua 155 and Yuhua 9719 were 25℃﹥30℃﹥20℃.The environmental temperatures for length root to shoot ratio(from high to low)of Luhua No.8,Yuhua 155,and Yuhua 9326 were 20℃﹥30℃﹥25℃,while Yuhua 9719 was 20℃﹥25℃﹥30℃.Fresh weight root to shoot ratio of Luhua No.8 was 30℃﹥25℃﹥20℃,Yuhua 155 and Yuhua 9326 were 30℃﹥20℃﹥25℃,and Yuhua 9719 was 20℃﹥25℃﹥30℃.Correlation analysis showed that all growth traits of peanut sprouts were extremely significantly positively correlated at 20,25,and 30℃(P＜0.01).The correlation coefficients at 20℃were 0.968 5 to 0.994 9,the correlation coefficients at 25℃were 0.952 7 to 0.998 4,and the correlation coefficients at 30℃were 0.976 9 to 0.997 9.[Conclusion]An environmental temperature of 25℃can ensure optimal dynamic growth advantages for hypocotyl length,hypocotyl fresh weight,radicle length,radicle fresh weight,radicle number,length root to shoot ratio,and fresh weight root to shoot ratio of peanut sprouts.