【摘要】 以生产上有代表性的14个杏品种资源为研究对象,对其裂果性进行了研究,并测定分析了杏裂果与其影响因子(果皮结构、矿质元素含量、干鲜比、可溶性糖含量)的相关性,以期为杏裂果机理的系统研究提供参考。结果表明,表皮细胞体积小、排列整齐且紧密的品种果皮不易破裂,表皮细胞体积大、排列凌乱且松散的品种容易裂果,果皮厚度与裂果指数并无明显的相关性;杏裂果与矿质元素含量的相关性大小排列顺序为Ca>Zn>Mn>Fe>K>Mg>Cu,Ca元素含量与裂果指数呈现显著的负相关,Zn、Mn与裂果指数相关性较低,Fe、K、Mg、Cu元素与裂果指数相关性极低,Ca不足是影响杏裂果的主要因素;同等条件下,含水量越大的品种裂果指数低,可溶性糖含量越高的品种裂果指数高。更多还原

【Abstract】 In this study, 14 representative apricot cultivars in the production were selected as the experimental materials, and their fruit cracking characteristics, as well as the correlations between fruit cracking and influencing factors(e.g., pericarp structure, mineral elements contents, DW/FW ratio and soluble sugar content) were analyzed to provide some reference for systematic study on fruit cracking mechanism of apricot. The results showed the cultivars with small orderly-and compactlyarranged epidermal cells were difficult to crack, while the cultivars with big disorderly-and loosely-arranged epidermal cells were easy to crack. There was no significant correlation between pericarp thickness and cracking index. The correlations between cracking and mineral elements contents of apricot fruit were in the order as Ca > Zn > Mn > Fe > K > Mg > Cu. The cracking index of apricot fruit was significantly negatively correlated with Ca content, was weakly correlated with Zn and Mn contents, and was uncorrelated with Fe, K, Mg and Cu contents. Ca deficiency was the main factor affecting the fruit cracking in apricot. Under the same conditions, the higher the water content is, the lower the cracking index is;and the higher the soluble sugar content is, the higher the cracking index is.更多还原