SC2053诱导小麦雄性不育技术研究初报

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。

A Prelimitary Study on Wheat Male Sterility Inducing Technique by SC2053

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.