论文摘要及关键词
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论文摘要及关键词示例（中、英文）
萝卜与甘蓝属间杂种后代的细胞学观察（小2号
黑体居中）
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摘□要（4号黑体居中）
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□□以萝卜甘蓝属间杂种后代为材料，研究其体细胞的染色体数目变异情况。研究结果表明：F
代植株的染色体数目变异范围为18至38，其中以36最多，占27.05%，主要集中于38，5
代植株的染色体数目变异范围明显减小，在30至38之间，其中以36最多，37，36和34；F
6
占41.86%，主要集中于37、36和35。F
代群体中，2n=36的植株最多，占40.8%，其次是
5
代群体中，也是2n=36的植株最多，占51.9%，……（5号宋体，2n=38的植株，占29.6%；F
6
单倍行距）
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关键词（4号黑体居中）
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□□萝卜；甘蓝；属间杂种后代；细胞学；育性（5号宋体）
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Cytological study on the intergeneric hybrid progenies
between Raphanus sativus and Brassica oleracea
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倍行距〕
Abstract（4号Times New Roman居中）
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□□The intergeneric hybrid progenies of Raphanus sativus ×Brassica oleracea were used in this
study, and the variation of chromosome numbers of ovary cells were studied. The results were as follows. In the plants of the F5generation, chromosome numbers ranged from 18 to 38,and the cells with 36 chromosomes were the most frequent (27.05%). Most of the cells were those with chromosome numbers 38,37,36 and 34. In the plants of the F6generation, the range of chromosome number decreased evidently, which was from 30 to 38. The cells with 36 chromosomes were the highest (41.86%). Most of the cells were those with chromosome numbers 37,36 and 35. In the F5 generation, the plants with 2n=36 as the highest chromosome number were the most frequent (40.7%), and those with 2n=38 were the second (29.6%). In the F6 generation, the plants with 2n=36 as the highest chromosome number were again the highest (51.9%) ……（5号Times New Roman，单倍行距）
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Key words（4号Times New Roman居中）
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□□Raphanus sativus；Brassica oleracea；intergeneric hybrids；cytology；fertility （5号Times New Roman）