Major growth traits including height and DBH, and reproductive traits including number of male cones, female cones were investigated to provide insight into controlled pollination and management of seed orchard. The averaged height, DBH and volume of tested clones was 553 m，905 cm and 0021 m3, respectively. Significant differences in traits among clones and high clonal repeatability were detected. The degree of variation was higher for reproductive traits such as cones number than that for growth traits such as height and DBH. Based on major growth traits and reproductive traits, the 39 tested clones were clustered into 4 groups, which exhibited large degree of variation in traits. Group 1 exhibited superior growth traits and large amount of female cones and young cones, whereas group 2 exhibited poor growth traits and less cones number. In Group 3, the growth traits and male cones were abundant, but the female cones were poor. Group 4 exhibited poor growth traits but large amount of female cones and young cones.There was a weak and negative correlation between growth traits and female cones number, implied that multiple traits selection would be necessary in the selection of breeding parents and seed orchard parents. From 39 tested clones, 28 superior clones were selected, with the average male cone number, young cone number and volume being 182 %, 80 % and 96 % higher than the average value for the whole tested parents. The selected clones could be used for controlled pollination and seed orchard parents.
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References
[1]周志春,金国庆,秦国峰,等.马尾松纸浆材重要经济性状配合力及杂种优势分析[J].林业科学,2004,40(4):52-57.
[2]金国庆,秦国峰,刘伟宏,等.马尾松测交系杂交子代生长性状遗传分析[J].林业科学,2008,44(1):70-76.
[3]金国庆,周志春,秦国峰,等.马尾松种子园无性系结实与生长习性的关系[J].林业科学研究,2004,17(sp):38-44.
[4]续九如.林木数量遗传学[M].北京:高等教育出版社,2006.
[5]孔繁玲.植物数量遗传学[M].北京:中国农业大学出版社,2006.
[6]秦国峰,周志春,金国庆,等.马尾松优树自由授粉家系的生产力评价[J].林业科学研究,1997,10(5):472-477.
[7]孔凡斌.马尾松开花结实特征及种子产量预测[J].林业科学研究,2002,15(2):150-155.
[8]沈熙环.种子园技术[M].北京:科学技术出版社,1992
[9]王有才,董晓光,王笑山,等.日本落叶松种子园种子产量及结实规律研究[J].林业科学,2000,36(2):53-59.
[10]杨培华,樊军锋,刘永红,等.我国油松种子园研究现状[J].林业科技开发,2006,20(6):5-9.
[11]张晓渡,肖正东,程金年.马尾松种源实生种子园主要性状遗传变异的研究[J].浙江林业科技,2004,24(4):15-19.
[12]Diaz R, Merlo E. Genetic variation in reproductive traits in a clonal seed orchard of Prunus avium in Northern Spain[J]. Silver Genetica, 2008, 57(3):110-118.
[13]Kroon J, Wennstrom U, Prescher F, et al. Estimation of clonal variation in seed cone production over time in a scots pine seed orchard[J]. Silver Genetica, 2009, 58(1):53-62.
[14]Zelener N, Marcuccipoltri S N. Selection strategy for a seedling seed orchard design based on trait selection index and genomic analysis by molecular markers:a case study for Eucalyptus dunnii[J]. Tree Physiology, 2005, 25：1457-1467.
[15]王以珊,曾令海,罗敏,等.气候条件对马尾松种子园产量的影响[J].广东林业科技,2002,18(3):10-15.
[16]方乐金,施季森.杉木种子园种子产量及其主导影响因子的分析[J].植物生态学报,2003,27(2):235-239.
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