杂交稻制种田九二○用量与种子中GA_3含量及F_1代产生徒长苗的关系

作     者：胡汉桥 李祥 

作者机构：解放军农牧大学农学系长春130062 华中农业大学植物保护系武汉430070 

出 版 物：《中国水稻科学》 (Chinese Journal of Rice Science)

年 卷 期：1997年第11卷第1期

页      面：55-58页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

主　　题：杂交水稻 九二○ 种子 制种 杂种一代 

摘      要：The tested results indicated that the elongating seedling was induced when the content of GA3 in rice seed per gram was equal to or more than 94. 6 ng. The content of GA3 in F1 seed per gram was 23. 8, 49. 5, 53. 5 and 63. 5 ng respectively when the dosage of gibberellin was 0, 8, 13 and 18 g per 667 m2 in the hybrid rice seed production. These contents in the hybrid rice seed were much less than 94. 6 ng which could induce the rice seed to grow up elongating seedling. However, significant correlation existed between the content of GA3 in F1 seed and dosage of gibberellin in hybrid rice seed production. The further experiments proved that all of the aforementioned dosage of gibberellin could not induce the elongating seedling in F1 and that the elongating seedling in hybrid rice was caused by Gibberella fuiikuroi which infected the seed during blooming stage.