| 王寒冬，张 波，陈文杰，刘宝龙，刘登才，张怀刚.青海小麦品种的种子表型性状分析[J].麦类作物学报,2015,35(4):471 |
| 青海小麦品种的种子表型性状分析 |
| Phenotypic Analysis of Grain Traits of WheatCultivars Registered in Qinghai Province |
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| DOI：10.7606/j.issn.1009-1041.2015.04.05 |
| 中文关键词: 小麦 种子表型性状 相关分析 主成分分析 聚类分析 |
| 英文关键词:Wheat Grain phenotypic traits Correlation analysis Principle component analysis Cluster analysis |
| 基金项目:中国科学院战略性科技先导专项（A类）分子模块设计育种创新体系（XDA08030106）；中国科学院百人计划项目（B0217）；青海省科技计划项目（2011-Z-716; 2013-Z-942Q） |
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| 中文摘要: |
| 为充分了解青海省小麦品种的种子表型性状特征及其相关性，以1957年以来审定的66个小麦品种为研究对象，在青海小麦高产区（柴达木盆地）对种子长、宽、长宽比、面积、密度指数和千粒重6个种子表型性状的3年数据进行了比较分析。结果表明，依据种子表型性状可以将这些品种聚为4个类群；千粒重与种子长宽比显著相关，与其他4个性状极显著相关，这些性状均可以作为千粒重选择的指标；不同阶段审定品种的千粒重变化不大，说明青海省在千粒重方面育种改良效果不明显，在今后的育种工作中有待加强；3年平均千粒重超过60 g的品种有4个，它们为高千粒重育种提供了资源。 |
| 英文摘要: |
| In order to systematically understand the characteristics and their correlation of grain phenotypic traits,six grain traits (length,width,length/width ratio,area,density index,and thousand-grain-weight) of 66 wheat cultivars registered in Qinghai province from 1957 to 2009 were analyzed. The materials were planted in a high yield region (Qaidam Basin) in Qinghai province for three years. These cultivars were clustered into four groups based on grain traits. Thousand-grain-weight was significantly correlated with length/width ratio and highly significantly correlated with the rest of four traits,which indicated that the above parameters could be used as indicators for thousand-grain-weight selection. There was no obvious change among cultivars released in different stages,which indicated that the selection effects on thousand-grain-weight was weak in the past decades in Qinghai province. More work need to be done to improve thousand-grain-weight. Four cultivars with thousand-grain-weight over 60 g are important germplasms for wheat breeding. |
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