Provenance tests for survival and growth of 50-year-old Japanese larch (Larix kaempferi) trees related to climatic conditions in central Japan
Provenance tests for survival and growth of 50-year-old Japanese larch (Larix kaempferi) trees related to climatic conditions in central Japan
复制标题
DOI：
10.1007/s11295-013-0666-0
复制
发表时间：
2014-02
影响因子：
2.4
通讯作者：
T. Nagamitsu;K. Nagasaka;H. Yoshimaru;Y. Tsumura
中科院分区：
文献类型：
--
作者：
T. Nagamitsu;K. Nagasaka;H. Yoshimaru;Y. Tsumura
在日本中部的3个试验点，对日本落叶松（Larix kaempferi）自然分布区25个种源的存活和生长进行了研究。地点和种源的气候条件表明，在整个分布范围的西北和东南位置之间的对比。测定了50年生杉木树干的密度、高度、直径、弯曲度和枝的宽度和长度，计算了单位面积树干的横截面积和体积。种源间方差分量较大的是干面积、干体积（27- 33%）和分支宽度（26%），立地间方差分量较大的是干高、直径和密度（70- 81%），立地与种源间互作方差分量较小（0- 12%）。主成分分析表明，东部种源在大多数地点表现出较大的茎和枝的大小。生长速率和最大尺寸在每个站点估计拟合干体积在三个年龄（12，31或32，和50年）的增长曲线的逻辑函数。东部种源在温度季节变化最小、降水季节变化最大的情况下，干、分支生长表现最好。我们对L.山奈种源试验表明气候对存活和生长性状的影响以及从中选择新育种材料的潜在种源。
Survival and growth of Japanese larch (Larix kaempferi) from 25 provenances in the natural distributional range were examined at three test sites in central Japan. Climatic conditions of the sites and provenances indicated a contrast between northwest and southeast locations across the distributional range. Density, height, diameter, and crookedness of stems and width and length of branches were measured for 50-year-old trees, and per-area cross-sectional area and volume of stems were calculated. Variance components among the provenances were large in the stem area and volume (27–33 %) and the branch width (26 %); those among the sites were large in the stem height, diameter, and density (70–81 %); and those of interaction between sites and provenances were small (0–12 %) in all the variables. Principal component analyses showed that eastern provenances exhibited large size of stems and branches at most sites. Growth rate and maximum size at each site were estimated from fitting the stem volume at three ages (12, 31 or 32, and 50 years) to growth curves in logistic functions. Eastern provenances, where seasonal variation is least in temperature and most in precipitation, showed the highest performance of stem and branch growth. The findings from our long-term survey of theL. kaempferiprovenance tests suggest climatic effects on survival and growth traits and potential provenances from which to select new breeding materials.