| 青稞骨干亲本昆仑1号及其衍生品种(系)重要性状的演变研究 |
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| 引用本文： | 曾兴权,王玉林,徐齐君,原红军,尼玛扎西.青稞骨干亲本昆仑1号及其衍生品种(系)重要性状的演变研究[J].大麦与谷类科学,2016(1):19-23. |
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| 作者姓名： | 曾兴权 王玉林 徐齐君 原红军 尼玛扎西 |
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| 作者单位： | 1. 西藏自治区农牧科学院，西藏 拉萨 850002; 西藏自治区农牧科学院农业研究所，西藏 拉萨 850002;2. 西藏自治区农牧科学院,西藏 拉萨,850002 |
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| 基金项目： | 国家自然科学基金项目(31160283)。 |
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| 摘 要： | 为阐明昆仑1号及其3个不同时期衍生品种(系)重要农艺性状的演变规律,对重要农艺性状和产量性状进行了研究。结果表明,昆仑1号衍生品种(系)的株高呈增加趋势,子代株高相对于昆仑1号平均株高分别增加8.17%、18.77%和14.74%;子代叶片类型由长而宽逐渐演变为短而窄,旗叶长宽比逐渐增加,叶面积逐渐减少,该类型变化使株型更加紧凑,有助于增加单位面积的植株数,提高光合总产量,促进青稞的增产;穗长、单株有效穗数、穗粒重和小区产量均显著增加;小穗数和穗粒数变化不明显,千粒重小幅度减少。相关性分析表明,穗粒重、千粒重与产量呈显著正相关,单株有效穗数、穗长、株高对产量呈显著负相关,小穗数和穗粒数与产量间的相关性不显著。因此,昆仑1号的穗大、千粒重高等丰产特性在品种演替中得到了很好的传递。建议西藏青稞育种中,应结合农区畜牧业的发展,保持株高、减少穗长、增加有效小穗数、提高结实率,千粒重和穗粒重并重、主攻小穗数和穗粒数是提高青稞产量的有效途径。
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| 关 键 词： | 青稞骨干亲本 昆仑1号 衍生品种(系) 农艺性状 演变规律 |
The Evolutionary Trend of Important Traits of the Tibetan Hulless Barley Core Parent Kunlun 1 and its Derivatives |
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| Abstract: | Hulless barley is an important cereal crop worldwide,especially in Tibet of China.Here we compared important agronomic traits of the Tibetan hulless barley core parent Kunlun 1 and its derivatives.Relative to Kunlun 1,three derived varieties showed an in-crease in plant height (by 8.17%,18.77%,and 14.74% respectively;but reductions in leaf length,leaf width,and flag -leaf size, whose compact leaf shape favors high yielding.Moreover,the derived varieties were significantly greater than Kunlun 1 in spike length, effective spike number per plant,grain quality,and yield of unit area.But there were no notable differences in spike number between Kunlun 1 and its derivatives.Besides,the derived varieties had slightly lower 1000 -kernel weight than Kunlun 1.According to the correlation analysis of the derived varieties,their yield was positively correlated with their spike weight and effective spike number of per plant to a significant degree;but negatively correlated with their effective spike number,spike length,and plant height to a signifi-cant extent,whereas their yield had no close relationship with their spike number and weight.The derived varieties inherited the high-yielding traits of Kunlun 1 such as bigger spike and higher 1000 -kernel weight. |
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| Keywords: | Tibetan barley core parent Kunlun 1 Derived varieties Agronomic traits Evolutionary trend |
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