Fruit yellow-shoulder disorder as related to mineral element uptake of tomatoes grown in high temperature
Fruit yellow-shoulder disorder as related to mineral element uptake of tomatoes grown in high temperature
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DOI：
10.1016/j.scienta.2018.06.087
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发表时间：
2018-12
影响因子：
4.3
通讯作者：
Yiting Zhang;Katsumi Suzuki;Houcheng Liu;A. Nukaya;Y. Kiriiwa
中科院分区：
文献类型：
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作者：
Yiting Zhang;Katsumi Suzuki;Houcheng Liu;A. Nukaya;Y. Kiriiwa
为了通过调节高温营养液来减少黄肩病（YS），研究了补充钾（K）和磷（P）对YS指数的影响。实验在20℃以下的最佳温度条件和31℃以下的高温条件下进行。 EC 0.9dSm−1(PO4-P 1.5 meL−1, K 3.0 meL−1)、EC 0.9+P (PO4-P 4.6 meL−1, K 3.0 meL−1)、EC 0.9+K (PO4-P 1.5 meL−1, K 5.8 meL−1) 和 EC 0.9+P+K 的营养液使用（PO4-P 4.6 meL−1，K 5.8 meL−1）。每株番茄（Solanum lycopersicumL. ‘CF Momotaro York’）植物均生长在 250mL 盆中，结合三个桁架和高密度种植。结果表明，EC 0.9+P+K的吸钾量显着高于EC 0.9、EC 0.9+P和EC 0.9+K；施钾浓度相同时，EC 0.9+P的吸钾效率高于EC 0.9。在每株植物对 K 的吸收几乎相似的情况下，31°C 温度条件下的 YS 紊乱比 20°C 温度条件下更严重。 YS指数在31℃时与钾吸收量呈显着负线性相关（R2=0.81，P<0.01），而在22℃或其他矿物元素中未发现这种关系。这些结果表明钾的吸收显着提高。在31℃高温条件下增加P或/和K浓度相应地减少了YS紊乱。综上所述，推荐采用(EC 0.9+P)/(EC 0.9+P+K)营养液配方来减少高温生长季YS紊乱，其吸钾效率较EC 0.9+P+K有所提高。
In order to reduce yellow-shoulder (YS) disorder by regulating nutrient solution in high temperature, effects of potassium (K) and phosphorus (P) supplementation on YS index were investigated. Experiments were conducted in an optimum temperature condition under 20 °C, and in a high temperature condition under 31 °C. Nutrient solution of EC 0.9 dS m−1(PO4-P 1.5 me L−1, K 3.0 me L−1), EC 0.9 + P (PO4-P 4.6 me L−1, K 3.0 me L−1), EC 0.9 + K (PO4-P 1.5 me L−1, K 5.8 me L−1), and EC 0.9 + P + K (PO4-P 4.6 me L−1, K 5.8 me L−1) were used. Each tomato (Solanum lycopersicumL. ‘CF Momotaro York’) plant was grown in 250 mL pot combining three trusses and high-density planting. Results showed that K uptake amount was significantly higher at EC 0.9 + P + K than at EC 0.9, EC 0.9 + P and EC 0.9 + K. K uptake efficiency was higher at EC 0.9 + P than that at EC 0.9, although the application concentraiton of K were identical in them. YS disorder was more severe in 31°C than 20°C temperatures condition in the case of nearly similar uptake of K per plant. The YS index showed a significantly negative linear correlation with K uptake (R2= 0.81,P< 0.01) in 31 °C, which was not found in 22 °C or other mineral elements. These results indicated that the K uptake was significantly improved. YS disorder was correspondingly reduced by increasing P or/and K concentration in 31 °C high temperature condition. In conclusion, we recommended the nutrient solution formula (EC 0.9 + P)/(EC 0.9 + P + K) to reduce the YS disorder in high temperature growing season, because its K uptake efficiency was improved as compared with EC 0.9 + P + K.