Variation of phenotypic and physiological traits of Robinia pseudoacacia L. from 20 provenances

Abstract

To select elite Robinia pseudoacacia L. germplasm resources for production, 13 phenotypes and three physiological indicators of 214 seedlings from 20 provenances were systematically evaluated and analyzed. The leaf phenotypic and physiological coefficients of variation among the genotypes ranged from 3.741% to 19.599% and from 8.260% to 42.363%, respectively. The Kentucky provenance had the largest coefficient of variation (18.541%). The average differentiation coefficients between and within provenances were 34.161% and 38.756%, respectively. These close percentages showed that R. pseudoacacia presented high genetic variation among and within provenances, which can be useful for assisted migration and breeding programs. Furthermore, based on the results of correlations, principal component analysis and cluster analysis, breeding improvements targeting R. pseudoacacia’s ornamental value, food value, and stress resistance of were performed. Forty and 30 excellent individuals, accounting for 18.692% and 14.019%, respectively, of the total resources. They were ultimately screened, after comprehensively taking into considering leaf phenotypic traits including compound leaf length, leaflet number and leaflet area and physiological characteristics including proline and soluble protein contents. These selected individuals could provide a base material for improved variety conservation and selection.

Transcriptomic and Phenotypic Analyses Reveal the Molecular Mechanism of Dwarfing in Tetraploid Robinia pseudoacacia L.

“…economic value, such as in ornamental horticulture, timber, and feeding [28]. In particular, black locust has a good application prospect in the fields of garden vegetation guardrail and urban landscape afforestation [29,30].…”

“…While Robinia pseudoacacia L. (black locust) is considered an invasive species in certain European countries, it is undeniable that it possesses a significant ecological and economic value, such as in ornamental horticulture, timber, and feeding [28]. In particular, black locust has a good application prospect in the fields of garden vegetation guardrail and urban landscape afforestation [29,30].…”

Discrepancies and Evaluation of Needle-Leaf and Tracheid Traits of Qinhai Spruce in Qilian Mountains, Northwest China

“…The majority of the needle-leaf traits exhibited significant and highly significant correlation levels with one another, with correlation coefficients ranging from −0.69 to 0.95. The considerable disparity in conifer traits observed among the ten provenances of Qinghai spruce, along with the notable and highly significant correlation between the majority of these traits, may be attributed to the fact that the ten provenances of Qinghai spruce in this study spanned a large geographic distribution area, and the environmental heterogeneity within the distribution area resulted in a high degree of variation among the provenances [42][43][44]. This variation is not solely a consequence of genetic diversity but is also influenced by the combined effects of long-term geographic isolation, restricted gene exchange, and changes in geographic and environmental factors [45,46].…”

Breeding and improvement of black locust (Robinia pseudoacacia L.) with a special focus on Hungary: a review

“…Guo et al (2022a) analysed the variation of phenotypic and physiological traits of black locust seedlings originating from 20 provenances in USA to select elite germplasm resources. Guo et al (2022b) combined the evaluation of phenological traits with genotype data to construct a core germplasm collection for breeding and research purposes. Both studies concluded that black locust presented high genetic variation among and within provenances, and the applied method was appropriate for selective breeding and establishing core collections.…”