Studies on mineral nutrition oftomato plants

番茄植株矿质营养的研究

基本信息

批准号：
04454054
负责人：
MASUDA Masaharu
金额：
$ 3.78万
依托单位：
Okayama University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1994
项目状态：
已结题

项目摘要

Mineral uptake by tomato roots was investigated in special reference with calcium nutrition related to blossom-end rot of fruits.The relationship between the dark period and the incidence of leaf cheorosis, and mineral status in tomato, hot pepper, sweet pepper and eggplant under artificial illumination were studied.Continuous light condition induced chlorosis for tomato and eggplant, but did not for hot and sweet pepper. While its condition did not suppress the leaf levels of K,Ca and Mg. The results, therefor, indicate that the observed growth deformities in tomato and eggplant under prolonged illumination are not related to the plant mineral nutrition. Mechanism of leaf chlorosis has not been clarified.The pinching had little or no effect on mineral uptake of tomato roots, whereas fruit removal markedly promoted the uptake of nitrate, calcium, and magnesium. The uptake of phosphorus and potassium was unaffected by either treatment. The concentrations of nitrate, calcium, and magnesium in the xylem sap were higher in plants with fruit removed than they were in the control plants. However, there were no differences in phosphorus and potassim concentrations between treatments.In experiments mentioned above, calcium uptake by tomato roots was not affected by illumination period or any physical treatments.Then, calcium transport from root to fruits using ^<45>Ca was investigated. Calcium incorporation into fruits of same weight was higher at night than at day. ^<45>CaNO_3 solution treated to peduncle through a string was detected in the fruits with no differences between day and night.When NaCl was added to the solution for improving fruit quality, ^<45>Ca activity in fruits on dry weight basis was lower compared with the control.

特别参考了番茄根的矿物质吸收，并与钙营养有关，与钙的开花末端腐烂有关。黑暗时期与叶曲菌的发病率以及番茄，辣椒，甜胡椒，甜胡椒，甜胡椒和茄子的矿物质状态研究。虽然它的状况并未抑制K，Ca和Mg的叶片水平。因此，结果表明，长时间照明下观察到的番茄和茄子的生长畸形与植物矿物营养无关。叶绿症的机制尚未澄清。捏合对番茄根的矿物质吸收几乎没有影响，而水果去除显着促进了硝酸盐，钙和镁的吸收。磷和钾的摄取不受任何两种处理的影响。木质部含量的硝酸盐，钙和镁的浓度在去除的植物中比对照植物中的浓度更高。然而，在上述实验中，番茄根的钙吸收不受照明期或任何物理处理的影响。晚上，钙掺入相同重量的水果中比白天高。 ^<45> CANO_3在果实中检测到用于花梗的溶液在白天和晚上之间没有差异。当NaCl添加到溶液中以改善果实质量，与对照相比， ^<45> Ca在干重的水果中的活性较低。