【摘要】 乙烯利和三嗪二酮都是目前我国生产的较好的小麦杀雄剂,用乙烯利4000ppm+二酮4000ppm 混合液,从花粉母细胞形成-花粉双核期喷施,比单一药剂喷施药害较轻,有效喷药期长,不育率可达80～90%,雌芯受精能力亦不受影响。小麦与桥梁品种的杂种,经化学杀雄后在隔离区中与黑麦自然授粉,可获得大量的杂种。这不仅可节省人力和时间,而且还可利用化杀后保留的部份自交结实率,进行小麦与黑麦可杂交的新桥梁品系的选育。更多还原

【Abstract】 Effects of both ethyrel and diketone are better than that of otherwheat maie-sterilants in making male sterility.The solution mixed ethyrel(4000ppm) with diketone(4000ppm) is less damage to wheat plantthan that of any single solution and is effective to make wheat malesterility and keep female fertility when it is used during PMC formationto meiosis stage.In isolation plot where male-sterilants make male sterility the hybrids derived from bread Wheat varities × bridge varitiesas mother parent are natural crossed with Rye,and a great number ofwheat-Rye hybrids can be obtained.To do like this,not only workdaysare less than those of man-made crossing,but also some bridge strainscan be selected due to there still be partial selfing after using chemicals.It is not difficult to differ wheat-Rye hybrids from bread wheatseeds base on their chromosome number and morphology.Treatment with colchicine doubling the wheat-Rye hybrids chromosome number,several hundred primary octoploid Triticale lines have beenproduced.更多还原