Evaluation of Drought Resistance of Introduced Spring Wheat Varieties (Lines) at Bud Stage

【Objective】 The purpose of this study is to scientifically evaluate the drought resistance of imported spring wheat varieties(lines) from Kazakhstan, and to provide help for the breeding of drought resistant spring wheat varieties in Xinjiang. 【Method】 The measured values of imported spring wheats' bud length were 5.25-87.41 mm, germ sheath length were 5.25-40.18 mm, root length were 21.67-98.65 mm, bud fresh weight were 0.02-0.43 g, root fresh weight were 0.02-0.64 g, bud dry weight were 0.004-0.09 g,and root dry weight were 0.01-0.16 g.The measured values of each trait decreased under drought stress, and the bud was affected by drought stress more than the root. 【Result】 The measured values of bud length, germ sheath length, root length, bud fresh weight, root fresh weight, bud dry weight and root dry weight of imported spring wheat all decreased under drought stress, and the bud was affected by drought stress more than the root. 【Conclusion】 There were 11 varieties (lines) with better drought resistance: C1429 (Д 12 Зритроспермнм), C1442 (Д 315), C1446 (Д 320), C1428 (Д Бт－10), C1439 (Д 311), C1441 (Д 314), C1440 (Д 313), C1444 (Д 318), C1423 (54427), C1443 (Д 316) and C1431 (Д 254 No6, сар.29).