SHOOT/ROOT ASSIMILATE ALLOCATION AND NODULATION OF VIGNA-UNGUICULATA SEEDLINGS AS INFLUENCED BY SHOOT LIGHT ENVIRONMENT
SHOOT/ROOT ASSIMILATE ALLOCATION AND NODULATION OF VIGNA-UNGUICULATA SEEDLINGS AS INFLUENCED BY SHOOT LIGHT ENVIRONMENT
复制标题
DOI：
10.1007/bf02183089
复制
发表时间：
1994-04-01
期刊：
影响因子：
4.9
通讯作者：
HUNT, PG
中科院分区：
文献类型：
--
作者：
KASPERBAUER, MJ;HUNT, PG
南豌豆（Vigna unguiculata， L.）接收光的光谱平衡Walp。幼苗芽影响光同化在叶、茎和根之间的分配。相对于红光，远红比越高，茎长越长，茎根生物量比越高，块根较少，根瘤较少。在人工光源控制的环境中，或在阳光下，通过不同颜色土壤表面的反射或竞争植物的反射来改变FR/R比，获得了相同的FR/R比响应模式。根据土壤氮有效性和水分含量的不同，早期茎/根光合物质分配和结瘤的重要性也不同。
Spectral balance of light received by southern pea [Vigna unguiculata (L.) Walp.] seedling shoots affected photoassimilate allocation among leaves, stems and roots. A higher ratio of far-red (FR) relative to red (R) light resulted in longer stems, higher shoot/root biomass ratio, less massive roots and fewer nodules. The same response pattern to FR/R ratio was obtained in a controlled environment with artificial light sources, or in sunlight where the FR/R ratio was modified by reflection from different colored soil surfaces or by FR reflected from competing plants. The importance of early shoot/root photoassimilate allocation and nodulation may differ according to soil nitrogen availability and moisture content.