Prediction of Silking Stage in Corn Based on Temperature Response Evaluated by Nonparametric Method

Japanese Journal of Crop Science

Kunio TAKEZAWA¹  Sukeyuki ONO¹  Hiroshi SEINO¹  Eihide MONMA¹  Takamitsu KONNO¹  Yoshifumi TAMURA¹ 

关键词: Corn;    絹糸抽出期;    Growth;    生育予測;    Nonparametric method;    トウモロコシ;    Prediction;    ノンパラメトリック法;    Silking stage;    Temperature response;   

DOI  :  10.1626/jcs.58.48

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Silking stages of three corn varieties (Wasehomare, Hokuyu and P3715) were estimated according to the concept of DVI (Horie et all), using the Nonparametric method recently proposed (Takezawa and Tamura). The Growth data obtained at Tokachi Agricultural Experiment Station at 5 seeding times in each year through 1979 to 1985 were used. The results are: 1) Curves showing the relationships between Developmental rate (DVR) and air temperature were similar to sigmoid. We termed the curve as DVR-T curve. The shape of DVR-T curve differed among varieties. At low air temperature regimes, the curve was more linear in Wasehomare than in other two varieties. On the other hand, the rate of decrease in DVR at high air temperature regimes was higher in the order Wasehomare

【 授权许可】

Unknown