Temperature-related cline in the root mass fraction in East Asian wild radish along the Japanese archipelago
Temperature-related cline in the root mass fraction in East Asian wild radish along the Japanese archipelago
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DOI：
10.1270/jsbbs.18201
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发表时间：
2020-01-01
期刊：
影响因子：
2.4
通讯作者：
Morinaga, Shin-Ichi
中科院分区：
文献类型：
--
作者：
Ishizuka, Wataru;Hikosaka, Kouki;Morinaga, Shin-Ichi
具有广泛分布的野生植物，包括那些暴露于各种环境条件下的野生植物，可能在与农业应用相关的关键功能性状上存在变异。东亚野生萝卜（Raphanus sativus var.萝卜属植物）是一种合适的模式植物，因为它分布广泛，具有突出的库容量，并且在该物种中有两个栽培品种。在日本列岛进行了14个群体和3个试验点的多个普通花园试验，以量化产量和分配的变化。显著的种群间变异和互作效应与测试网站检测的根和地上部质量和根质量分数（RMF）。虽然群体的等级顺序在不同地点之间变化很大，产量性状的遗传效应方差分量较小（2.4%-4.7%），但RMF显示出较大的遗传方差（23.2%），并且在所有地点的北方群体中始终较高。分析表明，生长季节的平均温度的种子原产地是最突出的因素解释的RMF的变化，无论网站。我们的结论是，资源分配的特点有一个温度相关的渐变和植物在较冷的气候可以投资更多的资源到他们的根。
Wild plants with a wide distribution, including those exposed to a wide variety of environmental conditions, may have variations in key functional traits relevant for agricultural applications. The East Asian wild radish (Raphanus sativus var. raphanistroides) is an appropriate model plant because it is widely distributed and has outstanding sink capacity as well as two cultivars within the species. Multiple common garden trials with 14 populations and three testing sites were conducted across the Japanese archipelago to quantify variations in yield and allocation. Significant inter-population variations and interaction effects with testing sites were detected for the root and shoot mass and the root mass fraction (RMF). While the rank order of the population changed drastically among sites and the variance components of genetic effects were small in yield traits (2.4%-4.7%), RMF displayed a large genetic variance (23.2%) and was consistently higher in the northern populations at all sites. Analyses revealed that the mean temperature of growing season of the seed origin was the most prominent factor explaining variation in RMF, irrespective of the sites. We concluded that the trait of resource allocation had a temperature-related cline and plants in cooler climates could invest more resources into their roots.