酸性土壤과 Aluminum 營養液을 利用한 小麥 耐酸性 品種 選拔方法에 關한 硏究

A Method for Determining Aluminum Response of Wheat in Aluminum Nutrient Solution in Comparison to Response in Acid Soil

A method was developed to screen wheat varieties for A1 response in nutrient solution cultures. Eight varieties were grown in box of nutrient solution containing either 0 or 0.6 mM Al. In the green house the same eight varieties were grown in pots of acid soil with pH 4, pH 5, and pH 6 (control), respectively. Alumium tolerance ratings obtained by those two methods, nutrient solution and acid soil culture, were in good agreement with each other. Significant correlation coefficient were found between ratio of root length(0.6 mM AI./0 mM ; control × 100) in nutrient solution and ratio of yield per plant (pH 4/pH 6 ; control ×100) in the acid soil (r=0.8187**), and between ratio of root length and ratio of number of grains per spike (r=0.7008*) Yield per plant, number of grains per spike, number of tillers per plant were greatly affected by the degree of acidity of soils. Varieties × soil pH interaction was found so significant for yields per plant, number of grains per spike, and number of tillers per plant that can classify A1 tolerant or sensitive variety. On the basis of above results, seventy eight wheat varieties was screened for A1 response in nutrient solution cultures. Atlas 66, Kyeongkwang, Suweon 205, Suweon 207 and Bezostaia were classified into Al tolerant varieties and 15 varieties including Chokwang, Geurumil, Yeongkwang and Suweon 89, mid tolerant varieties, 22 varieties including Jankwang and Naemil., moderate, and 36 varieties including Saemil and Eunpamil, sensitive.