To obtain the compatibility of interstocks crossing with ‘Yuanxiaochun’, we performed a comparative analysis with five interstocks. From the 60th to 240th day after grafting, there was a significant difference between different treatments. All the new shoot/interstock diameter ratios were <1, indicating that there was no obvious phenomenon of small feet in ‘Yuanxiaochun’ seedlings of five kinds of interstocks. The density of ‘Yuanxiaochun’ was significantly different. Chl a, Chl b, T-Chl content of ‘Shiranuhi’, ‘Harumi’, ‘Tarocco’ changed greatly from the 90th to 120th day after grafting. The intercellular CO₂ concentration (C_i) of ‘Shiranuhi’ was significantly higher than the other interstocks. In addition, when ‘Yuanxiaochun’ was grafted onto ‘Shiranuhi’, net photosynthetic rate (P_n), stomatal conductance (g_s) and tanspiration rate (Tr) were higher. When ‘Harumi’ were used as the interstocks of ‘Yuanxiaochun’, the light saturation point (LSP) value was larger, which was conducive to the utilisation of strong light. Moreover, the value of LSP-LCP (LCP, light compensation point) of ‘Harumi’ and ‘Tarocco’ were significantly higher than the other three interstocks. The apparent quantum efficiency (AQE), RuBP maximum regeneration rate (J_max) and maximum carboxylation efficiency of Rubisco (V_cmax) value of ‘Shiranuhi’ was significantly lower than that of ‘Ponkan’. The CO₂ compensation point (CCP) of ‘Harumi’ interstock was lower, but the CO₂ saturation point (CSP) of ‘Tarocco’ interstock was higher than those of other interstocks respectively. There was a small difference in initial fluorescence (F₀) of different interstocks. The maximal photochemical efficiency of PSII in the dark (F_v/F_m) of ‘Kumquat’ was the lowest. In addition, Both Y(II) and ETR values of the ‘Yuanxiaochun’ leaves of ‘Ponkan’ interstock was the largest one. However, the non-photochemical quenching (qN) of ‘Ponkan’ was significantly lower, and that of ‘Tarocco’ interstock was the highest one. Interstocks have different effect on the growth and development, photosynthetic characteristics related to physiological characteristics of ‘Yuanxiaochun’ trees. ‘Ponkan’ and ‘Kumquat’ as the interstock of ‘Yuanxiaochun’ was more conducive to the rapid accumulation of photosynthetic products for normal vegetative and reproductive growth of plants.

为了获得与“圆小春”的种间杂交的兼容性，我们对5种种间进行了比较分析。从嫁接后第60天到第240天，不同处理之间存在显着差异。所有新芽/砧木直径比均<1，表明在5种砧木的“圆小春”幼苗中没有明显的小足现象。“元小春”的密度显着不同。从嫁接后的第90天到第120天，'Shiranuhi'，'Harumi'，'Tarocco'的Chl a，Chl b，T-Chl含量发生了很大变化。细胞间CO ₂浓度（C _i“ Shiranuhi”的）明显高于其他中间股票。另外，将“元小春”嫁接到“ Shiranuhi”上时，净光合速率（P _n），气孔导度（g _s）和蒸腾速率（Tr）较高。当以“ Harumi”作为“ Yuanxiaochun”的中间材料时，光饱和点（LSP）值较大，这有利于强光的利用。此外，“ Harumi”和“ Tarocco”的LSP-LCP（LCP，光补偿点）的值明显高于其他三种中间库存。表观量子效率（AQE），RuBP最大再生速率（J _max）和Rubisco最大羧化效率（V _cmax）的“ Shiranuhi”值明显低于“ Ponkan”的值。“ Harumi”中间原料的CO ₂补偿点（CCP）较低，但“ Tarocco”中间原料的CO ₂饱和点（CSP）分别高于其他中间原料。不同原料之间的初始荧光（F ₀）差异很小。在黑暗中PSII的最大光化学效率（F _v / F _m）中“金橘”的价格最低。此外，``on柑''中间种群的``圆小春''叶片的Y（II）和ETR值均最大。但是，“ Ponkan”的非光化学猝灭（qN）明显较低，而“ Tarocco”中间浆料的非光化学猝灭是最高的。中间种对“元小春”树木的生长发育，光合特性与生理特性相关影响不同。'Ponkan'和'Kumquat'作为'Yuanxiaochun'的中间种群，更有利于光合产物的快速积累，从而促进植物正常的营养和生殖生长。