About the Authors

Jian Sun

Affiliation Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China

Qiang Zhang

Affiliation Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China

Jia Zhou

Affiliation Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China

Qinping Wei

qinpingwei@gmail.com

Affiliation Institute of Forestry and Pomology, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JS QPW. Performed the experiments: JS QZ JZ. Analyzed the data: JS QPW. Contributed reagents/materials/analysis tools: QZ JZ QPW. Contributed to the writing of the manuscript: JS QPW.