文献类型：期刊文献

英文题名：The effects of fertility and synchronization variation on seed production in two Chinese fir clonal seed orchards

作者：Wang, Fang[1,2,3] Zhang, Shuaiying[1,2,3] Zhu, Peng[1,2,3] Chen, Lianghua[1,2,3] Zhu, Yuanwei[4] Yang, Changdong[4] Liu, Rendong[4] Li, Fengqing[5] Huang, Xiong[1,2,3] Yang, Hanbo[1,2,3]

第一作者：Wang, Fang

通信作者：Yang, HB[1];Yang, HB[2];Li, FQ[3]

机构：[1]Sichuan Agr Univ, Inst Ecol & Forestry, Sichuan Prov Key Lab Ecol Forestry Engn Upper Reac, Chengdu 611130, Sichuan, Peoples R China;[2]Sichuan Agr Univ, Inst Ecol & Forestry, Natl Forestry & Grassland Adm Key Lab Forest Resou, Chengdu 611130, Sichuan, Peoples R China;[3]Sichuan Agr Univ, Inst Ecol & Forestry, Rainy Area West China Plantat Ecosyst Permanent Sc, Chengdu 611130, Sichuan, Peoples R China;[4]Hongya State Owned Forest Farm & Rainy Area West C, Meishan 620364, Sichuan, Peoples R China;[5]Chinese Acad Forestry, Expt Ctr Subtrop Forestry, Fenyi 336600, Jiangxi, Peoples R China

年份：2023

卷号：13

期号：1

外文期刊名：SCIENTIFIC REPORTS

收录：;Scopus(收录号：2-s2.0-85146194974);WOS:【SCI-EXPANDED(收录号:WOS:000962604100019)】；

基金：AcknowledgementsThis work was supported by the Key Research and Development Project of Sichuan Province (2021YFYZ0032), Sichuan Science and Technology Program (2019YJ0416), and Natural Science Foundation of Sichuan Province (2022NSFSC1062, 2022NSFSC0091). We thank the reviewers and editors for manuscript suggestions, which are all valuable and helpful for improving our paper, and offering guidance for our research.

语种：英文

摘要：Variations in fertility and synchronization information is fundamental to seed orchard management. Our objective was to determine clonal variation and stability in strobili production, phenology, synchronization, and seed production in two generation clonal seed orchards (CSO) of Chinese fir. The number of female and male strobili and the phenology of 42 clones in both the 2.0- and 2.5-generation clonal seed orchards were investigated and recorded to calculate the variation and stability of fertility and synchronization. In both seed orchards, an obvious variation in gamete contribution was found among clones, indicating deviation from random mating. Female receptivity was in the pollen shedding stage, which is favorable to pollination. However, low synchronization (mean POij = 0.283) between clones indicated low overlap between female receptivity and pollen shedding. A higher POij value within clones than within outcrossing combinations indicated a high risk of selfing in two seed orchards, particularly for early- and late-flowering clones. The number of female strobili and POij (as female) significantly influence seed production. Overall, fertility and synchronization variation had notable consequences for seed production. Scientific genetic management is indispensable for promoting fertility uniformity and synchronization to obtain maximal genetic gain.