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    • 籼型三系杂交水稻产量性状的相关及通径分析

    谭酬志,邹小云,熊春梅,章彪雄,黄天宝

    Journal of Anhui Agricultural Sciences（2008）

    Cited 13|Views4
    Abstract
    [目的]为杂交水稻育种提供依据.[方法]以8个三系不育系与8个恢复系按不完全双列杂交(NCⅡ)配成的组合为材料,从产量性状上对所配成的38个组合进行杂种优势分析.[结果]杂种F1存在显著的杂种优势,在所考查的10个性状中尤以每穗总粒数、每穗实粒数、着粒密度、株高和单株产量的杂种优势表现明显;相关、通径分析结果表明,每穗实粒数、着粒密度、每穗总粒数和有效穗与单株产量的相关系数达极显著水平;且有效穗、每穗总粒数、每穗实粒数对单株产量的直接作用均达显著或极显著水平.[结论]多穗、大穗均可作为籼型杂交水稻育种的方向,但不能片面地强调某一性状的提高,而应同时综合考虑其他性状的表现,优化穗粒结构,才能获得产量的最大潜力.
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    Path analysis,Heterosis,Correlation coefficient,Yield character,Three-line indica hybrid rice
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    • Pretraining has recently greatly promoted the development of natural language processing (NLP)
    • We show that M6 outperforms the baselines in multimodal downstream tasks, and the large M6 with 10 parameters can reach a better performance
    • We propose a method called M6 that is able to process information of multiple modalities and perform both single-modal and cross-modal understanding and generation
    • The model is scaled to large model with 10 billion parameters with sophisticated deployment, and the 10 -parameter M6-large is the largest pretrained model in Chinese
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    【要点】：研究三系杂交稻产量特性的相关性及通径分析，为杂交稻育种提供科学依据。
    

    【方法】：采用NCⅡ设计8×8的杂交组合，研究38个杂交稻组合的产量杂种优势。
    

    【实验】：通过实验发现F1代存在显著的产量杂种优势，杂种优势表现在每穗粒数、穗粒数、结实密度、株高和单株产量等性状上。分析相关性及通径显示，单株产量与每穗粒数、结实密度、每穗粒数和有效穗数显著正相关，有效穗数、每穗粒数和穗粒数对单株产量的直接效应在0.05或0.01水平上非常显著。使用的数据集名称未在文中提及。