文献类型：期刊文献

英文题名：Variation of Fertility and Phenological Synchronization in Cunninghamia lanceolata Seed Orchard: Implications for Seed Production

作者：Xie, Jiaxin[1,2] Huang, Xin[1,2] Liu, Yingquan[3] Zhu, Peng[1,2] Zhu, Yuanwei[3] Li, Fengqing[4] Yao, Jiabao[4] Chen, Lianghua[1,2] Yang, Hanbo[1,2]

第一作者：Xie, Jiaxin

通信作者：Yang, HB[1];Yang, HB[2]

机构：[1]Sichuan Agr Univ, Inst Ecol & Forestry, Sichuan Prov Key Lab Ecol Forestry Engn Upper Rea, Chengdu 611130, Peoples R China;[2]Sichuan Agr Univ, Inst Ecol & Forestry, Natl Forestry & Grassland Adm, Key Lab Forest Resources Conservat & Ecol Safety, Chengdu 611130, Peoples R China;[3]Hongya State Owned Forest Farm, Meishan 620300, Peoples R China;[4]Chinese Acad Forestry, Expt Ctr Subtrop Forestry, Xinyu 336600, Peoples R China

年份：2022

卷号：13

期号：10

外文期刊名：FORESTS

收录：;EI(收录号：20224413036203);Scopus(收录号：2-s2.0-85140795109);WOS:【SCI-EXPANDED(收录号:WOS:000873447200001)】；

基金：This work was supported by the Key Research and Development Project of Sichuan Province under grant 2021YFYZ0032; the Sichuan Science and Technology Program under grant 2019YJ0416; and the Natural Science Foundation of Sichuan Province under grants 2022NSFSC1062 and 2022NSFSC0091.

语种：英文

外文关键词：Cunninghamia lanceolata; seed orchard; fertility variation; phenological synchronization; seed production

摘要：Reproductive synchronicity between parents influences the seed production and quality in seed orchards. Our objective was to determine clonal variation in fertility and phenological synchronization, as well as their effect on seed production, in a Chinese fir (Cunninghamia lanceolata) open-pollinated seed orchard. Significant variation of female fertility and male phenological synchronization occurred in the clones. The flowering of the male was 2 days earlier than the female. The gamete contribution of female and male were unbalanced between clones (the phenological synchronization indexes (POij) were 0.000-0.585 (as female) vs. 0.000-0.385 (as male)). In general, the average POij value of as a male was lower than as a female, but the number of male flowers were significantly higher than female, indicating that the management of female flowers should be enhanced. The average POij of self-pollination was 0.298, higher than cross-pollination (0.236), indicating that there was a larger probability to selfing in the orchard. The middle phenological type possessed higher phenological synchronization indexes than early and late phenological type. Genetic control was stronger for number of female flowers (H-2 = 0.277) than for male and female initial stages and flower duration (H-2 = 0.193-0.239). We found a positive correlation between POij and TSW (r = 0.756), SOsc (r = 0.612), and Cp (r = 0.337), suggesting the phenological synchronization determined the seed quality and yield. Comprehensively, this study provided fertility and phenology information for management of a Chinese fir seed orchard, as well as a reference for the establishment of advanced seed orchards of conifer trees.