Changes in Photosynthesis, Translocation and Distribution of 14C-assimilates during Leaf Development and the Rate of Contribution of Each Leaf to Fruit Growth in Tomato
Changes in Photosynthesis, Translocation and Distribution of 14C-assimilates during Leaf Development and the Rate of Contribution of Each Leaf to Fruit Growth in Tomato
复制标题
番茄叶片发育过程中光合作用、14C同化物的易位和分配变化及各叶对果实生长的贡献率
DOI：
10.2503/jjshs.59.771
复制
发表时间：
1991
影响因子：
--
通讯作者：
S. Imada
中科院分区：
文献类型：
--
作者：
Y. Shishido;C. J. Yun;T. Yuhashi;N. Seyama;S. Imada
通过使用番茄植物研究了光合作用，易位和分布模式在其发育过程中叶片中叶片中叶片中叶片中叶片中叶片中叶片中叶片中叶子中叶片中叶片中叶片中叶片中叶片中叶片中叶片中叶片中叶片的贡献，并使用番茄植物研究了单个叶子对各种水槽中光合作用的积累的贡献。第三叶和第7叶的光合速率然而，随着年龄的增长，每叶产生的光合作用量随着叶片面积的增加而逐渐增加。因此，在每片叶子的完全膨胀之前，光合作用的量达到了最大值。大多数同化物被分布在接近水槽中，作为主水槽。此外，源和下沉之间的关系可能随根，射击和果实的发育阶段而变化，从而导致水槽优势差异。因此，下水道之间的竞争力根据它们与来源之间的相对梯度发生了变化。每个叶子对每个水槽的同化物的积累的贡献是通过同化的总量和每个水槽的分布总和的总和来计算的。叶子。将花序分配为2至4个相邻叶子的60-80％。此外，一叶的最大贡献率似乎约为30％。叶子提供水槽的峰值效率与水槽最快扩大的时间相对应。
Changes in rates of photosynthesis, translocation, and distribution pattern of 14C-assimilates in leaves during their development and the contribution of individual leaves to the accumulation of photosynthates in various sinks were investigated by using tomato plants.The photosynthetic rate of the 3rd and 7th leaf gradually decreased with their ages, however, the amounts of photosynthates produced per leaf gradually increased with the increase of leaf area. Therefore, the amounts of photosynthates reached maximum just before full expansion of each leaf.Most of assimilates were distributed to near sink as a main sink. Furthermore, the relationship between source and sink likely changed with the developmental stages of roots, shoot and fruits resulting in difference in sink strengths. Thus, competitiveness among sinks changed according to the relative gradients between them and the source.The contribution of each leaf to the accumulation of assimilates by each sink was calculated by the total amount of assimilates and the sum of the distribution of 14C-assimilates from each leaf. The inflorescence was supplied 60-80% of its accumulation by 2 to 4 adjacent leaves. Furthermore, the maximum contribution rate from one leaf seemed to be about 30%. The peak efficiency of a leaf to supply a sink corresponded to the time when the sink was enlarging most rapidly.