| 蔗糖对小黑麦离体培养穗粒数的调节作用 |
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| 引用本文： | 魏凌基,孔广超,艾尼瓦尔.蔗糖对小黑麦离体培养穗粒数的调节作用[J].种子,2003(2):9-10. |
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| 作者姓名： | 魏凌基 孔广超 艾尼瓦尔 |
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| 作者单位： | 石河子大学新疆作物高产研究中心,石河子,832003 |
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| 基金项目： | 国家 8 63计划《优质饲料作物新品种选育》子课题《优质专用饲用小黑麦、黑麦染色体育种工程技术及新品种选育的研究》(2 0 0 1 AA2 4 1 1 62 )支助 |
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| 摘 要： | 利用小黑麦植株穗的离体培养技术，研究了不同蔗糖浓度对穗粒形成的影响。结果表明：在开花前13天到开花1天。不同浓度的蔗糖供给对穗结实率有不同的影响，随着蔗糖浓度上升，总结实率增加，但蔗糖浓度超过4％，穗结实率开始下降。在0．0～0．5％蔗糖浓度下．上部节间仍有～定的生长。但生长缓慢．不能抽穗。为明确蔗糖对穗粒数的调控的最敏感时期，设置了开花前不同时期降低蔗糖浓度的试验。蔗糖浓度为0．5％和4％2个处理。处理为开花前13～9天、8～4天、3天～开花。结果表明：不论在何时段，用0．5％蔗糖浓度处理，均比正常蔗糖4％处理穗粒数减少，就下降而言开花前13天＞3天＞8天＞0天；穗粒数率最敏感的时期：一是在开花前13—9天，二是开花前3天～开花。
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| 关 键 词： | 蔗糖 小黑麦 离体培养 穗粒数 调节作用 |
Regulate Effects of Concentration of Sucrose on Grain Number of Detached Triticale Ears in liquid Culture |
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| Wei Lingji,Kong Guangchao,Ai niwaer.Regulate Effects of Concentration of Sucrose on Grain Number of Detached Triticale Ears in liquid Culture[J].Seed,2003(2):9-10. |
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| Authors: | Wei Lingji Kong Guangchao Ai niwaer |
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| Abstract: | The regulate effects of concentration of sucrose on grain number of detached triticale ears were studied in vitro culture.The results indicated that the concentration of sucrose affected the setting percentage during 13-1 days before flowering,the setting percentage increased with the sucrose concentration vary from 0.0-4%and decreased with the concentration over 4%.The second intenodes grew slowly and could not head under 0.0-0.5%sucrose.The first sensitive period of affecting setting percentage were 13-9 days and second sensitive period were 3-1 days before flowering. |
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| Keywords: | Sucrose concentration Grain number Triticale |
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