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作物学报 ›› 2008, Vol. 34 ›› Issue (01): 106-110.doi: 10.3724/SP.J.1006.2008.00106

• 作物遗传育种·种质资源·分子遗传学 • 上一篇    下一篇

化学杂交剂SQ-1诱导糜子雄性不育效果研究

崔秀辉   

  1. 黑龙江省农业科学院嫩江农科所, 黑龙江齐齐哈尔 161041

  • 收稿日期:2006-12-06 修回日期:1900-01-01 出版日期:2008-01-12 网络出版日期:2008-01-12

Male Sterility Induced by Chemical Hybridizing Agent SQ-1 in Common Millet

CUI Xiu-Hui   

  1. Nenjiang Institute of Heilongjiang Academy of Agricultural Sciences, Qiqihaer 161041, Heilongjiang, China

  • Received:2006-12-06 Revised:1900-01-01 Published:2008-01-12 Published online:2008-01-12

PDF

1111

被引次数

21

摘要：

采用裂区试验设计, 以喷药时期为主区, 喷药剂量为副区, 探讨了用SQ-1诱导产生的雄性不育率、杂交率及自然授粉结实率3项指标评价应用效果。结果表明, 喷药时期、喷药剂量及时期与剂量一级互作显著或极显著影响不育率和杂交率。在雌雄蕊原基分化期, 喷药剂量为4.0和5.0 kg hm-2时诱导雄性不育率、杂交率都在95％以上; 花粉粒分化形成初期, 喷药剂量为5.0 kg hm-2时诱导雄性不育率和杂交率都在95％以上。喷药时期对自然授粉结实率影响不显著, 剂量及时期与剂量一级互作影响显著, 自然授粉结实率随着剂量的增加呈降低趋势。SQ-1用于糜子的最佳时期为雌雄蕊原基分化期, 最适剂量4.0 kg hm-2。

关键词:

化学杂交剂, 糜子, 雄性不育, 杂种优势

Abstract:

Effect of chemical hybridizing agent SQ-1 on common millet was studied with the split plot design. The different treatment stages and dosages of SQ-1 were designed as main plot and sub-plot respectively. Male sterility induced by SQ-1 was evaluated according to the three indexes: male sterile rate, crossing rate, and seed-setting rate of natural pollination. The results showed that treatment stages, dosages of SQ-1 and the interaction between them affected male sterile rate and crossing rate significantly or highly significantly. The induced male sterile rate and crossing rate were both over 95% with treatments of different dosages (4.0 and 5.0 kg ha-1) in the differentiation stage of the anlage of gynoecium and stamen, and also under the dosage of 5.0 kg ha-1 at the primary stage of forming pollen. The seed-setting rate of natural pollination was not affected significantly by the treatment stages, but affected significantly by the dosages and interaction between the treatment stages and dosages, and decreased with the dosage. Considering all the three indexes and the cost of production of hybrid seed, the optimum treatment stage is the differentiation stage of the anlage of gynoecium and stamen and the optimal dosage is 4.0 kg ha-1.

Key words:

Chemical hybridizing agent, Common millet, Male sterility, Heterosis

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