SC2053诱导小麦雄性不育技术研究初报

A Prelimitary Study on Wheat Male Sterility Inducing Technique by SC2053

1995～1996年试验结果表明，SC2053是一种高效小麦化学杀雄剂，可诱导相对雄性不育率达97．5％～100％。不同品种对SC2053的敏感程度不同。SC2053的最佳喷药期为小麦幼穗发育长度为0．5～1．2cm时，最佳用药剂量为0．5～0．7kg／hm2。SC2053可降低株高5cm左右，但对雌蕊等其他性状无明显副作用。在父母本行比为3：6时，相对异交结实率可达53．5％～67.8％，制种产量为1747．5～2049．0kg／hm2。

The results from the test of 1995 and 1996 showed that SC2053 is an effective male killing agent, which can induce a male sterile rate high to 97.5 % ~ 100%. Different varieties have different sensitivity to SC2053. The optimal spraying period is at the stage that the panicles of wheat grow to 0. 5 ~ 1. 2cm, i. e. April 15 in Linfen area. The optimal dosage is 0. 5 ~ 0. 7 kg/hm2. SC2053 also can lower the plant in about 5cm,and it has no harm to other traits such as pistil. When the row ratio of male and female parrents is 3: 6,relative cross-pollination setting percentage is 53. 5% ~67. 8% and the yield of seed is 1747. 5~2049.0kg/hm2.