Sex effect on growth performance and marker-aided sex discrimination of seedlings of Populus deltoides

doi:10.1007/s11676-022-01567-1

Abstract

Abstract:

Sex has a significant effect on various traits among dioecious plants. In this analysis of the sex effect on the radial growth and wood density of numerous 20-year-old trees of Populus deltoides growing in a common garden, male trees performed better than the females in radial growth, but sex did not significantly affect wood density. Growth rate and wood density were weakly negatively correlated. Sex selection is also critical for controlling seed-hair pollution from P. deltoides plantations. However, because the juvenile period of P. deltoides lasts for years, a reliable technique to determine the sex of juveniles has been needed. Here we developed a marker-aided technique to discriminate the sexes of P. deltoides seedlings. This study provides essential information on target traits and a highly desirable genetic toolkit for accelerate breeding programs for this important tree species.

Key words: Sex effect, Wood quality, Growth performance, Marker-aided selection, Sex discrimination

Yingnan Chen, Huaitong Wu, Xiaogang Dai, Weiqiang Li, Yu Qiu, Yonghua Yang, Tongming Yin. Sex effect on growth performance and marker-aided sex discrimination of seedlings of Populus deltoides[J]. JOURNAL OF FORESTRY RESEARCH, 2023, 34(5): 1639-1645.

Yingnan Chen, Huaitong Wu, Xiaogang Dai, Weiqiang Li, Yu Qiu, Yonghua Yang, Tongming Yin. [J]. 林业研究(英文版), 2023, 34(5): 1639-1645.

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