Investigation of growth and photosynthetic traits across eighteen oak varieties to identify superior varieties for southwest China
Investigation of growth and photosynthetic traits across eighteen oak varieties to identify superior varieties for southwest China
Quercus,commonly known as oak,has great potential as one of the most widely plants.However,the lack of superior varieties is a bottleneck for its usage and application in Southwest China.Here,this study aims to explore the growth and photosynthetic traits of 18 oak varieties with the goal of identifying the adaptable superior varieties for the region,focusing on nutrient growth,leaf morphology,chlorophyll content,and photosynthetic parameters over a 32-week growth period.The results showed that a significant diversity was observed among the varieties.Growth rhythm and fitted curves can divided the 18 oak varieties into three patterns.Additionally,for the leaf morphological parameters,Qd boasted the maximum leaf area,leaf width,and leaf aspect ratio,Qm showed the greatest leaf length,while Qa had the largest leaf form factor and leaf gap.Chlorophyll content was based on three time-points investigation,with higher level observed in Qm,Qr4,Qw,Qd,Qa,and Qr1.The transpiration rate(E),stomatal conductance(gsw)and total water vapor conductance(gtw)were dominantly obtained in Qr1,while Qd exhibited the highest intercellular CO2 concentration(Ci).Conversely,Qw displayed a significantly higher leaf chamber CO2 concentration(Ca).Furthermore,growth traits showed the similar correlation with leaf morphological and photosynthetic traits.PCA analysis grouped the oak varieties into five clusters,Qa,Qr1,Qp3,Qd,Qn,Qm and Qw identified as superior varieties.These findings not only offer promising oak candidate varieties for Southwest China,but also provide insights for establishing efficient breeding program for other woody plants.
Zengzhen Qi;Xiang Huang;Peng Yang;Hongyi Wu;Qiuyue Zhang;Zhenfeng Xu;Bo Tan;Yu Zhong;Peng Zhu;Gang Chen;Xiaohong Chen;Wenkai Hui;
Key Laboratory of Ecological Forestry Engineering of Sichuan Province,College of Forestry,Sichuan Agricultural University,Chengdu 611130,China;Key Laboratory of Ecological Forestry Engineering of Sichuan Province,College of Forestry,Sichuan Agricultural University,Chengdu 611130,China;Key Laboratory of Ecological Forestry Engineering of Sichuan Province,College of Forestry,Sichuan Agricultural University,Chengdu 611130,China;Key Laboratory of Ecological Forestry Engineering of Sichuan Province,College of Forestry,Sichuan Agricultural University,Chengdu 611130,China;Key Laboratory of Ecological Forestry Engineering of Sichuan Province,College of Forestry,Sichuan Agricultural University,Chengdu 611130,China;Key Laboratory of Ecological Forestry Engineering of Sichuan Province,College of Forestry,Sichuan Agricultural University,Chengdu 611130,China;Key Laboratory of Ecological Forestry Engineering of Sichuan Province,College of Forestry,Sichuan Agricultural University,Chengdu 611130,China;Key Laboratory of Ecological Forestry Engineering of Sichuan Province,College of Forestry,Sichuan Agricultural University,Chengdu 611130,China;Key Laboratory of Ecological Forestry Engineering of Sichuan Province,College of Forestry,Sichuan Agricultural University,Chengdu 611130,China;Key Laboratory of Ecological Forestry Engineering of Sichuan Province,College of Forestry,Sichuan Agricultural University,Chengdu 611130,China;Key Laboratory of Ecological Forestry Engineering of Sichuan Province,College of Forestry,Sichuan Agricultural University,Chengdu 611130,China;Key Laboratory of Ecological Forestry Engineering of Sichuan Province,College of Forestry,Sichuan Agricultural University,Chengdu 611130,China;
Oak Quercus growth rhythms chlorophyll content photosynthesis
1571-1593 / 23
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