COMPARISON OF ANTHOCYANIN ACCUMULATION OF RED CHINESE SAND PEARS (PYRUS PYRIFOLIA NAKAI) GROWN AT TWO LOCATIONS
We compared the fruit of red Chinese sand pears (Pyrus pyrifolia Nakai Mantianhong) grown at two sites with different environmental conditions, evaluating colour development, and expressions of anthocyanin-related genes during the colour formation phase in two successive years. The Anning site had a warm climate with a large daily temperature range and high irradiance. These conditions resulted in better colouration of red Chinese sand pears compared with those grown in Xingyang, which had a hot climate with a small daily temperature range and low irradiance. At harvest, the skin of pears grown in Anning contained higher concentrations of anthocyanins, and lower concentrations of chlorophyll than fruit from Xingyang. The higher anthocyanin content in fruit grown in Anning may be because the environmental conditions, particularly light and temperature, induced anthocyanin biosynthesis more effectively. The expressions of anthocyanin structural and regulatory genes, especially PpCHS, PpANS, PpUFGT, PyMYB10 and PpbHLH were higher in fruit grown in Anning than in that from Xingyang. These results increase our understanding of the regulation of red colouration in red Chinese sand pear fruits, and are useful for identifying optimum growing areas.
Yuanwen Teng, , Dong Zhang, , Bo Yu, , Minjie Qian, , Suke Wang, , Xiugen Li, , Jun Su, and Qun Shu, (2015). COMPARISON OF ANTHOCYANIN ACCUMULATION OF RED CHINESE SAND PEARS (PYRUS PYRIFOLIA NAKAI) GROWN AT TWO LOCATIONS. Acta Hortic. 1094, 175-182
Pyrus pyrifolia, ecological factors, colour parameters, gene expression