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复合杂交
composite-crossing
- 皖稻8 5是安徽省农科院水稻研究所采用复合杂交和系谱选择法育成的优质早籼稻新品种。
A new early-maturing rice variety, Wandao 85, derived from a multiple cross by pedigree method, was characterized by good grain quality. - 同时，采用拓展亲本来源、复合杂交等手段，克服了低酚棉遗传变异率低，以及遗传单一的弊端。
At the same time, by enlarging the source of parents and adopting composite crosses, the defects of low genetic variability and genetic uniformity of low gossypol cotton can be overcomed. - 接下来的40年间，蒸汽拖拉机、复合犁、杂交玉米、冷藏货车和牧场的铁丝网悉数面世。
In the next 40 years, steam tractors, gang plows, hybrid corn, refrigerated freight cars, and barbed wire fencing to enclose rangelands all appeared.
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