本研究中，共采集到17个自然种群（DH、LC、CT、YD、WP、RS、

In this study were collected from 17 natural populations (DH, LC, CT, YD, WP, RS, SX, QL, YP, SW, SC, NJ, ZN, JH, PY, DY, LA) (Tables 1 and figure 1). In CT, ZN, YP found only three populations of wild Pterospermum 2, so only the sample taken to 2 parts, in SW, YD, QL, DY, DH, LA were only found to meet the requirements of 3,3,4, 5, 7 and 8 wild Pterospermum. RS and LC in proximity to each other due to individual populations, so the standard sample collected respectively 10 and 19 samples, we wish to avoid the selection of potential individual clones. Standard sample: geographical distance between populations greater than 10 km, line spacing is greater than 10 m, and pest-free. Plucked leaves immediately placed in ice prepared in advance, after the sample back to the lab and wipe clean with a foil wrap, then frozen in liquid nitrogen 30 min, and finally into the ultra-low temperature refrigerator, unified extraction of DNA.

In this study, a total of 17 natural populations (DH, LC, CT, YD, WP, RS, SX, QL, YP, SW, SC, NJ, ZN, JH, PY, DY, LA) were collected (Tables 1 and 1). Only 2 wild semi-maple loads were found in THE CT, ZN, YP population, so only 2 samples were taken, and only 3, 3, 4, 5, 7 and 8 wild semi-maple loads met the requirements were found in SW, YD, QL, DY, DH, and LA respectively. In the RS and LC populations, 10 and 19 samples were taken according to the sampling criteria, respectively, because the individuals were close to each other, and we wanted to avoid selecting potential cloned individuals. Sampling criteria: The geographic distance between the population is greater than 10 km, the spacing of the plants is greater than 10 m, and there are no pests and diseases. The leaves are immediately placed in a pre-prepared ice box, taken back to the lab, wiped the samples clean and wrapped in tin foil, then frozen with liquid nitrogen for 30 min, and then placed in an ultra-low temperature refrigerator to preserve and extract the DNA.

In this study, 17 natural populations (DH, LC, CT, YD, WP, RS, SX, QL, YP, SW, SC, NJ, Zn, JH, py, Dy, LA) were collected (Table 1 and figure 1). In CT, Zn and YP populations, only 2 wild Schizophyllum were found, so only 2 samples were collected. In SW, YD, QL, Dy, DH and La, only 3, 3, 4, 5, 7 and 8 wild Schizophyllum were found. Because the individuals in RS and LC populations are close to each other, 10 and 19 samples were collected according to the sampling standards respectively. We hope to avoid selecting potential clones. Sampling standard: the geographic distance between populations is more than 10 km, the plant spacing is more than 10 m, and there is no pest. Take the leaves and put them into the pre prepared ice box immediately, take them back to the laboratory, wipe the samples clean and wrap them with tin foil paper, then freeze them with liquid nitrogen for 30 minutes, finally put them into the ultra-low temperature refrigerator for preservation, and extract DNA uniformly.<br>