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通过苯磺隆、唑嘧磺草胺、精喹禾灵和烟嘧磺隆4种化学药物对甘蓝型油菜骨干自交系99-35和09QB48-54在成都地区的杀雄效果研究表明:当油菜主花序最大花蕾长度约1.50~2.00 mm,用苯磺隆第1次叶面喷施,隔10 d左右再第2次喷施,每次单株受药量15~20 m L,浓度为0.05~0.10μg/m L的苯磺隆时,可诱导群体全不育株率100%,且不产生药害,并能保持整个花期雄性不育;每次单株受药量8~10 m L浓度为0.30μg/m L苯磺隆时,可诱导群体不育株率90%以上,但结实率受到一定影响;0.30μg/m L浓度的苯磺隆涂茎二次,可诱导群体全不育株率91.16%;唑嘧磺草胺、精喹禾灵和烟嘧磺隆在本试验中没有杀雄效果。
The killing effects of four chemicals, tribenuron-methyl, pyrazosulfuron, quizalofop-p-ethyl and nicosulfuron on backbone inbred lines 99-35 and 09QB48-54 of Brassica napus in Chengdu region showed that when The length of the largest flower bud of the main inflorescences of rapeseed was about 1.50-2.00 mm. The first spraying with tribenuron-foliar spray was carried out for about 10 days, 0.05 ~ 0.10μg / m L of tribenuron-methyl, the population can induce all-sterile plant rate of 100%, and does not produce phytotoxicity, and can maintain the flowering of male sterile; each single drug dose of 8 ~ 10 m L concentration of 0.30μg / m L of tribenuron-methyl, the rate of sterile plants can be induced more than 90%, but the seed setting rate was affected to a certain extent. When the concentration of 0.30μg / m L tribenuron-methyl was applied twice, The rate of sterile plants was 91.16%. There was no killing effect on the test in the test for pyrazosulfuron, quizalofop-p-ethyl and nicosulfuron.