3. The fingerprints of 21 domestic and 11 foreign sunflower Helianthus annuus L.
基因型和11个国外引进向日葵基因型进行分析，构建了它们的指纹图谱。
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4. The factors that influence callus induction, shoot differentiation and growth of Helianthus annuus cotyledon were studied and an efficient regeneration system was established .
5. The factors that influence callus induction, shoot differentiation and growth of Helianthus annuus cotyledon were studied and an efficient regeneration system was established .
