여름콩의 開花ㆍ成熟 및 形態的 特性變異

Variation of flowering, maturity and morphological characteristics in summer type soybeans

This experiment was conducted to select useful breeding materials among eighty lines or varieties of summer type soybeans tested in the experiment field, DanKook University, Cheonan in 1993. Fourty-four to sixty-two days were observed as the range of days from planting to flowering and the average was 53 days. The range of days from planting to maturity was 112 to 127 days and the average was 117 days. Eighty-six percentage of tested soybean materials was white color of flower and green color of hypocotyl, while the remains were purple in both. Soybean entries with ovate, long circular and circular type of leaf were 6%, 73% and 21%, respectively. Large, medium and small leaf in the leaf area were 34%, 32% and 34%, respectively. Light green leaf color was observed as 15%, and green and dark green color were 70% and 15% among tested soybeans, respectively. Soybeans with tan pods were observed as 49%, brown and dark brown color were 14% and 37%. Erect type of pubescence was 36%, whereas curly and appressed type were 54% and 10%, respectively. Sparse, normal and dense pubescence density were 16%, 41% and 43%, respectively. Most soybean entries(63%) showed gray pubescence and the remains were brown color. Days from planting to flowering(DPF) showed highly negative correlation with days from flowering to maturity(DFM) and days from planting to maturity (DPM), whereas it was highly positively correlated with leaf area. Days from flowering to maturity was highly positively associated with days from planting to maturity, while it showed highly negatively correlated with leaf area. Days from planting to maturity was highly negative correlation with leaf area.