文献类型：期刊文献

英文题名：Genetic Evaluation of Water Use Efficiency and Nutrient Use Efficiency in Populus deltoides Bartr. ex Marsh. Seedlings in China

作者：Gao, Chengcheng[1,2] Liu, Chenggong[1,2] Chen, Cun[3] Liu, Ning[1,4] Liu, Fenfen[1,2] Su, Xiaohua[1,2] Huang, Qinjun[1,2]

第一作者：Gao, Chengcheng

通信作者：Huang, QJ[1];Huang, QJ[2]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Key Lab Tree Genet & Breeding, Beijing 100091, Peoples R China;[2]State Forestry & Grassland Adm, Key Lab Tree Breeding & Cultivat, Beijing 100091, Peoples R China;[3]Qilu Normal Univ, Sch Life Sci, Jinan 250013, Peoples R China;[4]Univ Ghent, Dept Environm, Lab Wood Technol, UGent Woodlab, B-9000 Ghent, Belgium

年份：2024

卷号：13

期号：16

外文期刊名：PLANTS-BASEL

收录：;Scopus(收录号：2-s2.0-85202613799);WOS:【SCI-EXPANDED(收录号:WOS:001307342700001)】；

基金：This project was financially supported by the Fourteenth Five-Year National Key Research and Development Program of China, project name: Breeding and Germplasm Innovation of Fast-growing New Varieties of Temperate and North Subtropical Poplar (No. 2022YFD2200301).

语种：英文

外文关键词：poplar; genetic variation; delta C-13 and delta N-15; water and nutrient use efficiency

摘要：Populus deltoides Bartr. ex Marsh. represents a valuable genetic resource for fast-growing plantations in temperate regions. It holds significant cultivation and breeding potential in northern China. To establish an efficient breeding population of poplar, we studied the genetic variation of P. deltoides from different provenances. Our focus was on genotypes exhibiting high growth rates and efficient water and nutrient use efficiency (WUE and NUE). We evaluated 256 one-year-old seedlings from six provenances, measuring height, ground diameter, total biomass, and leaf carbon and nitrogen isotope abundance (delta C-13 and delta N-15). Our analytical methods included variance analysis, multiple comparisons, mixed linear models, correlation analysis, and principal component analysis. The results showed that the coefficient of variation was highest for delta N-15 and lowest for delta C-13 among all traits. Except for delta N-15, the effects of intra- and inter-provenance were highly significant (p < 0.01). The rates of variation for all traits ranged from 78.36% to 99.49% for intra-provenance and from 0.51% to 21.64% for inter-provenance. The heritability of all traits in AQ provenance was over 0.65, and all exhibited the highest level except for seedling height. All traits were significantly positively correlated with each other (p < 0.05), while ground diameter, total biomass, and WUE were highly significantly negatively correlated with latitude (p < 0.01). After a comprehensive evaluation, two provenances and eight genotypes were selected. The genetic gains for seedling height, ground diameter, total biomass, WUE, and NUE were 27.46 cm (178-2-106), 3.85 mm (178-2-141), 16.40 g (178-2-141), 0.852 parts per thousand (LA05-N15), and 3.145 parts per thousand (174-1-2), respectively. Overall, we revealed that the abundant genetic variation in P. deltoides populations mainly comes from intra-provenance differences and evaluated provenances and genotypes. The results of this study will contribute to optimizing and enhancing the breeding process of Chinese poplar and improving the productivity of fast-growing plantations.