Studies on Protection and clarifying mechanism of goldspeck incidence in tomato fruits

番茄果实金斑病防治及澄清机制研究

基本信息

批准号：
05660029
负责人：
NUKAYA Akira
金额：
$ 1.41万
依托单位：
Shizuoka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05660029/
关键词：
Tomato Goldspecks Blossom-end rot NH_4-N K Ca ration rockwool culture Soilless culture Ca nutrition NH4-N ゴールドスペック果尻腐れ果カルシウム吸収

项目摘要

In order to clarify uptake rate and amount of mineral elements, especially calcium, by plants, 2 cultivars of tomatoes, 'Momotaro' and 'June Pink', were grown at 4 levels of K/Ca ratio (0.5,1.0,1.5 and 2.0), 4 levels of NH_4-N concetrations (0,0.7,1.3 and 2.0), and the combination of 2 levels of K/Ca ratio (0.5 and 2.0) and 2 levels of NH_4-N concentrations (0, and 2.0me/l) in free drainage rockwool system.BER occurrence at both cultivars became higher, but Ca uptake rete and GS occurrence became lower, with increasing NH_4-N concentrations and K/Ca ratio in the nutrient solution. Cumulative amount of Ca uptake decreased to one third at 'Momotaro' and one half at 'June Pink' when K/Ca ratio in the nutrient solution increased from 0.5 to 2.0. This suppression of Ca uptake seemed to be induced by lower Ca concentration and also antagonism with potassium. Ca content in laminae decreased to four fifth at both cultivars. Cumulative amount of Ca uptake and Ca content in laminae decreased to seven tenth and one half, respectively, when NH_4-N concentrations in nutrient solution increased from 0 to 2.0 me/l, at both cultivars.Thus, increasing NH_4-N concentration and K/Ca ratio in nutrient solution made Ca uptake rate, amount of Ca uptake and Ca content in fruit decreased. Less Ca uptake caused BER occurrence. GS occurrence became higher in case of less BER occurrence and higher Ca content in fruits. There is a negative correlation between BER and GS occurrence in each cultivar.

为了澄清矿物质元素（尤其是钙）的摄取速率和植物的摄入率，2个西红柿品种，“ momotaro”和“六月粉红色”，以4级K/CA的比率（0.5,1.0,1.5和2.0）（0.5,1.0,1.5和2.0），4个NH_4-N级别（NH_4-N）水平（0,0..7,1.3和2.0和2.0和2.0）和2级和2级和2.0级和2.0级和2.0（2.0）和2级。在自由排水岩盘系统中，NH_4-N浓度（0和2.0mE/L）的水平较高，但是CA的发生率较高，而CA的吸收和GS的发生率较低，而养分溶液中NH_4-N浓度的增加和K/CA的增加。当营养溶液中的K/CA比从0.5增加到2.0时，在“ Momotaro”时，累积的Ca摄取量减少到“ Momotaro”的三分之一，而在“ June Pink”中降低了一半。 CA摄取的这种抑制似乎是由较低的Ca浓度以及与钾的拮抗作用引起的。在两个品种中，薄片中的Ca含量降低到第四位。 Cumulative amount of Ca uptake and Ca content in laminae decreased to seven tenth and one half, respectively, when NH_4-N concentrations in nutrient solution increased from 0 to 2.0 me/l, at both cultivars.Thus, increasing NH_4-N concentration and K/Ca ratio in nutrient solution made Ca uptake rate, amount of Ca uptake and Ca content in fruit decreased.减少的CA摄取引起了BER的发生。如果BER发生较少，水果中的CA含量较高，则GS的发生变得更高。在每个品种中，BER与GS发生之间存在负相关。